Combined Terminal Block Manufacturer
Combined Terminal Block Manufacturer
TBC, TBR, TBD, TK, TA and TIN Series
SENTOP supplies combined terminal blocks for industrial control panels, electrical machinery, power distribution equipment and project-based wiring systems. Our product range covers TBC, TBR, TBD, TK, TA and TIN series with different current levels, pole configurations, mounting structures and protective options.
What Are Combined Terminal Blocks?
Combined terminal blocks are modular connection units that can be assembled into the required number of poles for control panels, electrical equipment, power distribution systems and industrial wiring projects. SENTOP supplies TBC, TBR, TBD, TK, TA and TIN series for different mounting, wiring and protection requirements.
Build the Required Terminal Group Around the Actual Wiring Project
The word “combined” describes the way individual terminal units can be assembled into a larger terminal group. Customers can select the required terminal series, current level, conductor range, pole quantity, mounting method and protective accessories according to the equipment design.
Combined terminal blocks do not necessarily mean that every pole is electrically connected. Each terminal position normally performs its own circuit connection unless a matched connecting plate, bridge or other distribution accessory is added.
Each series may use a different housing structure, mounting base, rail profile, protective cover, current range or accessory system. Final selection should be based on the exact SENTOP model information.
Individual Terminal Units Combined into One Wiring Group
Choose TBC, TBR, TBD, TK, TA or TIN according to the required structure and installation method.
Match the terminal model with the required current, voltage, conductor size and wiring conditions.
Add the required number of terminal units according to the machine, cabinet or project wiring diagram.
Complete the assembly with compatible rails, bases, fixing plates, baffles, covers or marking parts.
Flexible Pole Combination
Individual terminal units can be arranged according to the number of connection positions required by the project.
- Suitable for different wiring quantities
- Expandable terminal group structure
- Project-based pole configuration
Multiple Mounting Methods
Different combined terminal block series may use rail mounting, cassette assembly, mounting bases or direct panel installation.
- DIN rail mounting options
- Base or cassette assembly
- Model-dependent panel mounting
Different Current Levels
The six product families include different terminal sizes for normal control circuits, equipment wiring and power connections.
- Multiple conductor-size options
- Different terminal dimensions
- Application-based model selection
Protective and Fixing Accessories
Compatible accessories help complete the mounting, separation, protection and identification of the terminal assembly.
- Baffles and end components
- Transparent protective covers
- Rails, bases and fixing parts
“Combined” Does Not Automatically Mean All Poles Are Electrically Common
A combined terminal block assembly is made from several terminal units installed together. Electrical distribution between poles only occurs when the selected model includes an internal common connection or when a compatible bridge or connecting accessory is installed.
Confirm More Than the Product Appearance
Combined Terminal Block Product Range
SENTOP supplies TBC, TBR, TBD, TK, TA and TIN combined terminal blocks for industrial control panels, electrical machinery, distribution equipment and project-based wiring systems. Each series has its own terminal structure, mounting method, conductor range, current level and matching accessory system.
TBC Combined Terminal Blocks
TBC combined terminal blocks use a modular assembly structure that allows individual terminal units to be arranged according to the required pole quantity.
- Flexible terminal position configuration
- Suitable for general equipment wiring
- Multiple sizes and model options
- Matched rail, base and baffle selection
TBR Combined Terminal Blocks
TBR terminal blocks are designed for modular terminal groups and organized rail-based wiring in control panels, machinery and electrical equipment.
- Modular terminal strip assembly
- Different current and size options
- Suitable for control-panel wiring
- Matched rail and fixing components
TBD Combined Terminal Blocks
TBD combined terminal blocks provide compact screw connection options for control circuits, distribution wiring and equipment terminal assemblies.
- Compact terminal body structure
- Screw-based conductor connection
- Suitable for general industrial circuits
- Model-dependent rail and bridge options
TK Combined Terminal Blocks
TK combined terminal blocks use a screw connection structure for industrial control wiring, electrical machinery and modular terminal-group installation.
- Screw connection for conductor fixing
- Multiple terminal sizes available
- Suitable for machinery and control systems
- Supports project-based pole assembly
TA Combined Terminal Blocks
TA terminal blocks provide a wide series structure for different conductor sizes, electrical requirements and terminal-group configurations.
- Multiple terminal size options
- Suitable for different current levels
- Flexible pole quantity configuration
- Model-dependent rail or panel mounting
TIN Combined Terminal Blocks
TIN combined terminal blocks can include a protective cover structure for organized wiring, contact shielding and clear circuit separation.
- Protective cover options
- Screw conductor connection
- Clear terminal-group organization
- Different sizes and current levels
Select the Combined Terminal Block Series by Structure and Application
Similar Combined Terminal Blocks May Use Different Mounting Structures
Series names help organize the product range, but the final selection should be based on the exact SENTOP model. Confirm the conductor range, electrical requirement, terminal dimensions, pole quantity, mounting rail or base, protective cover and matching accessories before ordering.
Explore 1,000+ More SENTOP Models
Can't find the exact terminal block for your specific project? We offer a vast range of specialized connection solutions and customized OEM options to meet every industrial requirement.
Compare TBC, TBR, TBD, TK, TA and TIN Terminal Blocks
The six combined terminal block series are designed for different mounting structures, conductor sizes, current requirements, pole quantities and protection needs. Use the comparison below as an initial selection guide before confirming the exact SENTOP model.
Modular or cassette-style combination for flexible terminal-position assembly.
Flexible CombinationRail-based modular terminal grouping for organized control-panel wiring.
Rail AssemblyCompact screw-connection options for normal control and distribution circuits.
Compact WiringIndustrial screw terminal combination for machinery and equipment wiring.
Screw ConnectionMultiple terminal sizes for different conductor and electrical requirements.
Multiple Current LevelsCovered terminal options for organized wiring and additional contact protection.
Protective CoverCompare the Main Structure and Selection Focus
| Series | Typical Structure Direction | Common Mounting Direction | Typical Application Focus | Information to Confirm |
|---|---|---|---|---|
| TBC | Modular or cassette-style terminal-unit combination | Matching rail, base or series-specific assembly structure | General equipment wiring and flexible pole configuration | Exact model, pole quantity, conductor range, base and accessories |
| TBR | Modular terminal group designed around rail-based installation | Compatible mounting rail and fixing components | Control panels, machinery and organized circuit wiring | Current requirement, rail profile, terminal size and fixing parts |
| TBD | Compact screw-connection combined terminal structure | Model-dependent DIN rail or matching mounting structure | Normal control circuits and compact distribution wiring | Wire size, terminal dimensions, mounting method and bridge options |
| TK | Industrial screw-connection terminal combination | Confirm according to the selected TK model | Electrical machinery, control wiring and equipment assembly | Current, voltage, conductor range, poles and installation structure |
| TA | Multiple terminal sizes covering different wiring requirements | Rail or model-dependent panel installation | Control circuits, power connections and mixed current requirements | Terminal size, conductor range, current level and installation space |
| TIN | Screw terminal combination with selected protective-cover options | Compatible rail, base or series-specific mounting components | Projects requiring organized wiring and contact shielding | Cover dimensions, wire space, terminal model and fixing accessories |
Start with the Customer’s Actual Wiring Requirement
Series names provide an initial direction, but the final product should be matched to the actual circuit, conductor, mounting and installation requirements.
Information That Should Be Checked for Every Series
Confirm the exact product family and model number.
Confirm the required current and voltage conditions.
Provide the wire size and conductor construction.
Confirm the required number of terminal positions.
Confirm the rail, base or panel installation structure.
Confirm covers, baffles, rails and fixing components.
Series Descriptions Are Provided for Product Navigation
Exact mounting method, electrical ratings, conductor range, dimensions, pole configuration, protective structure and accessories depend on the selected SENTOP model. Do not select a replacement only by appearance or series name.
Combined Terminal Block Structures and Mounting Methods
TBC, TBR, TBD, TK, TA and TIN combined terminal blocks may use different assembly structures, mounting rails, terminal bases, fixing parts and protective covers. The correct installation method should be confirmed according to the exact product series, model, pole quantity and equipment layout.
Select the Terminal Structure Before Confirming the Final Model
Combined terminal blocks are assembled from individual terminal units, but the method used to secure those units can vary by product family. Some models use a cassette or terminal base, while others are mounted on a compatible rail or fixed directly to an equipment panel.
Protective covers, baffles, end components and connecting parts must also match the selected terminal series. Similar-looking accessories may differ in width, side profile, fixing position, mounting slot or cover dimensions.
The mounting descriptions on this page provide a general selection direction. Final rail profile, mounting dimensions, fixing components and installation procedure depend on the selected SENTOP model.
Four Typical Combined Terminal Block Assembly Methods
Cassette or Base Assembly
Individual terminal units are arranged on a matched base, cassette or series-specific support structure to create the required number of poles.
- Common direction for selected TBC models
- Flexible terminal position configuration
- Requires matched base and fixing components
DIN Rail or Matching Rail Mounting
Terminal units are installed on a compatible mounting rail and secured with matched fixing components according to the product-series structure.
- Used by selected TBR, TBD, TK, TA and TIN models
- Supports organized cabinet installation
- Rail profile must match the terminal foot
Panel or Base Mounting
Selected models may use mounting holes, terminal bases or other fixing structures for installation directly onto an equipment panel or mounting surface.
- Available for selected product models
- Useful where rail mounting is not required
- Requires confirmed hole spacing and dimensions
Protective Cover Installation
Covered terminal groups use a matched transparent or protective cover to shield connection points and organize the completed wiring assembly.
- Common direction for selected TIN models
- Provides additional contact shielding
- Cover dimensions must match the terminal group
From Terminal Series Confirmation to Completed Assembly
The actual installation sequence may vary by model, but the following process provides a practical direction for preparing a combined terminal block group.
Confirm the Series
Identify TBC, TBR, TBD, TK, TA or TIN according to the required product structure.
Confirm the Poles
Calculate the number of terminal positions required by the equipment or wiring diagram.
Select the Mounting Part
Match the terminal group with the correct rail, base, cassette or panel-fixing structure.
Install Terminal Units
Arrange the required terminal units in the correct order and position.
Add Accessories
Add fixing plates, baffles, end parts, connecting parts or protective covers.
Review the Assembly
Check terminal alignment, fixing condition, wiring space and accessory fit.
Match the Installation Requirement with the Structure Direction
| Installation Requirement | Possible Structure Direction | Main Information to Confirm |
|---|---|---|
| Flexible terminal pole combination | Modular cassette or base assembly | Terminal-unit width, pole quantity, base profile, fixing parts and end components |
| Control cabinet rail installation | Compatible rail-mounted terminal group | Rail profile, terminal mounting foot, cabinet space and end-fixing structure |
| Direct installation onto equipment | Panel or terminal-base mounting | Mounting-hole spacing, base dimensions, screw positions and installation surface |
| Additional contact shielding required | Covered terminal assembly | Cover type, cover length, terminal-group width, wiring clearance and fixing method |
| Existing terminal model replacement | Model and mounting structure matching | Existing model, product photos, dimensions, rail, base, cover and accessory information |
Check These Details Before Confirming the Order
Do Not Select Mounting Parts Only by Product Appearance
Similar combined terminal blocks may use different rail profiles, terminal bases, fixing positions, side dimensions, end components and protective covers. Confirm the exact terminal series and model before selecting the mounting and accessory system.
Common Problems When Buying Combined Terminal Blocks
TBC, TBR, TBD, TK, TA and TIN combined terminal blocks may look similar, but differences in current level, conductor range, terminal dimensions, mounting structure, protective cover and matching accessories can directly affect installation and use. A complete review helps reduce model errors, missing parts and repeated purchasing.
Selecting Only by Product Appearance Can Lead to an Incomplete Solution
Combined terminal block purchasing involves more than choosing the main terminal unit. The customer also needs to confirm the correct series, exact model, wire size, pole quantity, mounting rail or base, end components, baffles, protective covers and packaging requirements.
Unable to Identify the Correct Terminal Series
TBC, TBR, TBD, TK, TA and TIN terminal blocks can have similar external shapes, especially when customers only have an old product photo or a partial model number.
Wrong Current Level or Conductor Range
Choosing a terminal only by physical size may result in a model that does not match the required conductor, current level, voltage condition or wiring space.
Incorrect Rail, Base or Mounting Structure
The terminal unit may be correct, but the mounting rail, cassette, terminal base or fixing component may not match the selected series.
Baffles, Covers and Fixing Parts Are Missing
Customers sometimes order only the main terminal blocks and overlook the baffles, end components, fixing plates, rails, bases or transparent protective covers.
Incorrect Number of Terminal Positions
The required pole quantity may be calculated incorrectly when control circuits, power circuits, spare positions and grounding points are not reviewed together.
Multiple Series Are Difficult to Sort and Manage
Projects may contain several TBC, TBR, TBD, TK, TA or TIN models with different current levels, pole quantities and accessory combinations.
A Practical Combined Terminal Block Review Process
Reviewing the main terminal, mounting structure and accessories together helps create a more complete order.
Collect Product Information
Prepare model numbers, product photos, dimensions and existing installation information.
Confirm Circuit Requirements
Confirm current, voltage, conductor size, circuit function and required terminal positions.
Review the Installation
Check the mounting rail, base, fixing method, available space and wiring clearance.
Match the Accessories
Confirm baffles, end parts, covers, rails, connecting components and fixing plates.
Review the Complete BOM
Confirm models, quantities, accessories, labels and packaging before placing the order.
Details That Help Avoid Incorrect Terminal Selection
The Main Terminal and Its Accessories Should Be Confirmed Together
Similar terminal blocks and accessories may use different dimensions, rail profiles, base structures, fixing positions and cover sizes. Confirm the complete terminal block BOM before ordering instead of selecting each component independently.
How to Select the Right Combined Terminal Block
Selecting TBC, TBR, TBD, TK, TA or TIN combined terminal blocks requires more than comparing product appearance. The correct model should match the circuit requirement, conductor size, pole quantity, mounting structure, protective components and complete accessory list.
Confirm the Terminal Function Before Comparing Models
An existing model number, product photo or rated current can provide an initial selection direction, but final matching should also consider the conductor, installation dimensions, mounting rail or base, protective cover and required accessories.
Terminal Series
Identify whether the project requires a TBC, TBR, TBD, TK, TA or TIN terminal structure.
Current and Voltage
Match the selected terminal model to the electrical conditions required by the equipment or circuit.
Wire Size and Type
The conductor cross-section and construction must fit the connection opening and clamping structure of the exact model.
Required Pole Quantity
Calculate the required connection positions according to the wiring diagram, circuit groups and spare-terminal requirement.
Mounting Method
Confirm whether the terminal assembly uses a DIN rail, matching rail, terminal base, cassette or panel mounting.
Terminal Dimensions
Review terminal width, height, length and wiring clearance before confirming the completed terminal group.
Cover and Separation
Determine whether the terminal assembly requires transparent covers, baffles, end components or circuit separation parts.
Accessories and Packaging
Complete the order with the correct rails, bases, fixing parts, connecting parts, labels and grouped packaging.
Match the Customer Requirement with the Product Direction
| Customer Requirement | Suggested Selection Direction | Information to Confirm |
|---|---|---|
| Replace an existing terminal model | Match the existing TBC, TBR, TBD, TK, TA or TIN series and mounting structure | Complete model, brand, product photos, dimensions and mounting details |
| Create a flexible multi-pole assembly | Review modular terminal-unit series and matched bases, rails or fixing components | Pole quantity, terminal width, circuit grouping and end components |
| Install terminals on a rail | Select a rail-compatible terminal model from the suitable product family | Rail profile, mounting foot, fixing components and cabinet space |
| Connect a larger conductor | Review a suitable TA, TK, TIN or other model based on the required conductor and circuit | Wire cross-section, current, voltage, terminal size and tightening structure |
| Add contact protection | Review TIN or another terminal assembly with a compatible protective cover | Terminal-group length, cover size, mounting points and wiring clearance |
| Purchase several series in one project | Prepare a mixed-model BOM with terminal and accessory quantities | Series, model, quantity, accessory list, customer codes and packaging groups |
Prepare These Details for a More Accurate Recommendation
More complete product information helps reduce repeated confirmation and improves terminal and accessory matching.
Not Sure Which Combined Terminal Block Series to Select?
Send your existing model, terminal photos, conductor size, required current, pole quantity, mounting method and order quantity. SENTOP will review the available information and help organize a suitable product and accessory direction.
Models, photos, drawings, samples and BOM files are accepted.
Do Not Select a Replacement Only by Rated Current
Terminal width, conductor opening, screw position, mounting structure, rail or base profile, pole assembly, cover design and accessory compatibility should also be checked before confirming a replacement model.
Specifications to Confirm Before Ordering
TBC, TBR, TBD, TK, TA and TIN combined terminal blocks are available in different current levels, conductor ranges, terminal sizes, pole quantities, mounting structures and protective configurations. Confirming the complete technical information helps reduce model, installation and accessory errors.
Review Electrical, Mechanical and Installation Details Together
Similar combined terminal blocks may use different conductor openings, terminal widths, screw positions, mounting rails, bases, covers and fixing accessories. The complete product specification should be reviewed before confirming a model or replacement.
Product Series and Model
Confirm the exact product family before comparing dimensions, current ratings, conductor ranges or accessories.
Required Current and Voltage
The selected terminal should match the electrical conditions of the control circuit, power circuit or equipment connection.
- Required operating current
- Required circuit voltage
- Control or power application
- Project operating conditions
Wire Range and Conductor Type
Confirm that the conductor cross-section and construction match the terminal opening and screw-clamping structure.
- Wire size in AWG or mm²
- Solid conductor
- Stranded conductor
- Flexible or ferruled conductor
Required Pole Quantity
Calculate the terminal positions according to the wiring diagram, circuit groups and required spare positions.
- Main connection positions
- Separate circuit groups
- Spare terminal positions
- Final assembly length
Terminal Size and Space
Review both the individual terminal dimensions and the completed terminal-group size before installation.
- Terminal width
- Terminal height and depth
- Total terminal-group length
- Wiring and cover clearance
Rail, Base or Panel Mounting
Different product series may use a DIN rail, matching rail, cassette, terminal base or direct panel installation.
- DIN rail or matching rail
- Terminal base or cassette
- Panel mounting holes
- End-fixing components
Cover and Separation Parts
Confirm whether the completed terminal group requires a transparent cover, baffle, separator or end component.
- Protective cover requirement
- Cover length and width
- Baffle or separator quantity
- End-component structure
Quantity and Packaging
Confirm the quantity of every model and how the terminals and accessories should be separated, labeled and packed.
- Quantity by terminal model
- Quantity by machine or cabinet
- Customer item-code labels
- Accessory separation
Information Required for Combined Terminal Block Selection
| Specification Item | Information to Confirm | Why It Matters |
|---|---|---|
| Product Series | TBC, TBR, TBD, TK, TA or TIN | Determines the basic terminal structure, mounting direction and accessory family. |
| Model Number | Complete existing or required product model | Helps identify the exact dimensions, conductor range and installation structure. |
| Current and Voltage | Required electrical conditions | Helps narrow the suitable terminal size and application direction. |
| Wire Range | AWG or mm² and conductor construction | Confirms that the conductor can be correctly inserted and clamped. |
| Number of Poles | Required connection positions and spare poles | Determines terminal quantity, assembly length and accessory quantity. |
| Terminal Dimensions | Width, height, depth and group length | Confirms compatibility with the available cabinet or equipment space. |
| Mounting Method | Rail, base, cassette or panel installation | Determines the required mounting parts and fixing structure. |
| Protective Structure | Cover, baffle, separator and end components | Ensures the protective parts match the completed terminal assembly. |
| Accessories | Rail, base, fixing plate and connecting parts | Helps create a complete and installable terminal BOM. |
| Order Quantity | Quantity by model, cabinet, machine or project | Supports quotation, labeling, production and packaging. |
Compare More Than the Rated Current
- Compare only the rated current
- Select only by housing color
- Compare only the front appearance
- Ignore the mounting rail or base
- Ignore the cover and baffle structure
- Select accessories only by appearance
- Confirm the complete series and model
- Check current, voltage and wire range
- Compare terminal dimensions
- Confirm rail, base or panel mounting
- Check cover, baffle and end components
- Review the complete terminal and accessory BOM
Details That Support Accurate Model Matching
Exact Specifications Depend on the Selected SENTOP Model
Product-series descriptions provide an initial selection direction. Exact mounting method, electrical ratings, conductor range, dimensions, pole configuration, protective structure and accessories depend on the selected SENTOP model.
Accessories for Combined Terminal Blocks
A complete combined terminal block assembly may require more than the main TBC, TBR, TBD, TK, TA or TIN terminal units. Matching rails, bases, fixing plates, baffles, end components, covers and connecting parts help complete the installation, separation, protection and organization of the terminal group.
Build a Complete and Installable Terminal Block Assembly
Combined terminal block accessories are normally designed around a specific product family. Components with a similar appearance may use different dimensions, fixing positions, rail profiles, side structures or cover lengths.
For project orders, the main terminal model, pole quantity, mounting structure and accessory list should be reviewed together. This helps reduce missing parts and makes the completed terminal group easier to install and manage.
Accessory names may be similar across different terminal families, but compatibility should be confirmed using the exact SENTOP series and model.
Components Used to Complete a Combined Terminal Block Group
Mounting Rails
Mounting rails support compatible terminal units and help create an organized terminal group inside electrical equipment.
- Rail profile must match the terminal foot
- Rail length depends on the final assembly
- End-fixing space should be included
Terminal Bases
Selected combined terminal block models use a matched base, cassette or supporting structure instead of a standard rail.
- Common for selected modular structures
- Base width must match terminal units
- Mounting holes should be confirmed
Fixing Plates and End Parts
Fixing components help secure the terminal group and reduce movement along the rail, base or mounting structure.
- Installed at the end of the terminal group
- Structure depends on the selected series
- Quantity depends on the assembly method
Baffles and Separators
Baffles and separators help divide terminal groups, improve circuit identification and maintain the required spacing.
- Used between selected terminal groups
- Side profile must match the terminal body
- Quantity depends on circuit grouping
Transparent Protective Covers
Protective covers can shield connection areas and help keep the completed terminal group organized and clearly visible.
- Common for selected covered terminal models
- Cover length should match the terminal group
- Fixing points must match the terminal structure
Connecting Plates and Links
Selected terminal models may use compatible connecting parts to distribute potential or connect specified terminal positions.
- Only use matched connecting components
- Pitch and terminal structure must be checked
- Connection purpose should be confirmed
Marking Accessories
Labels and marking parts help identify terminal positions, circuit groups, cabinet numbers and customer item codes.
- Supports terminal-position identification
- Useful for cabinet and machine grouping
- Marker slot depends on the terminal model
Grouped Packaging Parts
Terminal units and accessories can be separated and labeled according to model, cabinet, machine or project requirement.
- Separate terminals and accessories
- Group products by cabinet or machine
- Add customer item-code identification
From Main Terminal Selection to Final Accessory Review
The actual configuration depends on the selected series, but the following process provides a practical direction for preparing a complete combined terminal block assembly.
Confirm Terminal Series
Identify TBC, TBR, TBD, TK, TA or TIN and confirm the exact model.
Calculate Pole Quantity
Confirm the required terminal positions, circuit groups and spare poles.
Select Mounting Parts
Match the terminal units with the correct rail, base or cassette.
Add Separation Parts
Add baffles, separators or end components according to the circuit layout.
Add Protective Parts
Confirm transparent covers or other protective components where required.
Review the Final BOM
Confirm all models, quantities, accessories, labels and package groups.
Organize Main Terminals and Accessories in One List
TBR Terminal Assembly
Final quantities should be confirmed according to the exact TBR model, pole quantity and circuit grouping.
TIN Covered Terminal Assembly
Cover length and mounting structure should be matched to the completed TIN terminal group.
Details to Confirm Before Selecting Terminal Accessories
| Accessory | Main Selection Purpose | Compatibility Information to Confirm |
|---|---|---|
| Mounting Rail | Supports the terminal group inside the cabinet or electrical equipment. | Rail profile, width, height, length and terminal mounting-foot structure. |
| Terminal Base | Supports selected cassette or modular terminal units. | Base width, terminal-unit size, mounting holes and fixing direction. |
| Fixing Plate | Secures the terminal group in the required position. | Series, rail or base profile, fixing position and required quantity. |
| Baffle or Separator | Separates terminal groups or different circuit sections. | Terminal width, side profile, installation position and circuit grouping. |
| Protective Cover | Shields the connection area and organizes the assembly. | Cover length, width, fixing points and wiring clearance. |
| Connecting Part | Connects selected terminal positions or distributes potential. | Terminal pitch, connection quantity, circuit purpose and model compatibility. |
| Marker | Identifies terminals, circuits, machines or cabinets. | Marker slot, marker size, text content and installation position. |
Review These Details Before Confirming the Accessory BOM
Similar-Looking Accessories Are Not Always Interchangeable
Combined terminal block accessories may differ in terminal width, side profile, mounting rail, base structure, fixing position, connecting pitch and cover dimensions. Confirm the exact terminal series and model before ordering accessories.
Applications of Combined Terminal Blocks
TBC, TBR, TBD, TK, TA and TIN combined terminal blocks can be configured for control circuits, equipment wiring, power distribution, machine assembly and project-based electrical installations. The suitable series should be selected according to the conductor range, current requirement, pole quantity, mounting structure and required protective accessories.
Configure the Terminal Group Around the Equipment Wiring Layout
Combined terminal blocks are suitable for projects requiring multiple connection positions in one organized assembly. Different terminal series can support compact control wiring, normal equipment circuits, larger conductors, protective covers and mixed-model terminal groups.
Control Panels and Cabinets
Combined terminal blocks organize incoming and outgoing conductors for PLCs, relays, contactors, sensors and other control-panel components.
- PLC input and output wiring
- Relay and contactor connections
- Signal and control circuit grouping
- Organized cabinet terminal strips
Industrial Machinery
Machine builders can use modular terminal groups to connect motors, switches, sensors, actuators and internal electrical components.
- Motor and actuator wiring
- Limit switch connections
- Internal machine distribution
- Machine-by-machine terminal grouping
Power Distribution Equipment
Selected combined terminal block models can support power circuit connections where larger conductors and higher current levels are required.
- Distribution cabinet connections
- Incoming and outgoing circuit wiring
- Multiple current-level terminal groups
- Covered connection options
Factory Automation Equipment
Automation projects often require compact and organized terminal positions for sensors, solenoid valves, control signals and field-device connections.
- Sensor and actuator circuits
- Production-line equipment
- Robotic system wiring
- Field-device connection points
Building Control and Distribution
Combined terminal blocks can be used in selected building control, lighting, HVAC and electrical-distribution panels.
- HVAC control panels
- Lighting control circuits
- Building automation wiring
- Electrical distribution enclosures
Renewable Energy Systems
Selected terminal models can support internal control and distribution wiring in solar, wind, energy-storage and related electrical equipment.
- Solar control equipment
- Wind power control systems
- Energy-storage cabinets
- Auxiliary electrical circuits
Different Projects Require Different Terminal Configurations
Match the Project Type with the Main Selection Factors
| Application | Common Wiring Requirement | Main Selection Factors |
|---|---|---|
| Control Panels | Multiple compact control, signal and relay connection positions | Terminal width, wire range, pole quantity, rail compatibility and markers |
| Industrial Machinery | Connections for motors, sensors, switches, valves and internal equipment wiring | Current, wire size, fixing structure, machine space and terminal grouping |
| Power Distribution | Larger conductors and multiple electrical circuit levels | Required current, voltage, terminal size, conductor range and protective cover |
| Factory Automation | High quantities of sensor, actuator and field-device connections | Compact installation, marking, repeated wiring and circuit organization |
| Building Electrical Systems | HVAC, lighting, building control and distribution-panel wiring | Circuit type, conductor size, panel space, mounting method and enclosure requirements |
| Renewable Energy Equipment | Control, monitoring and auxiliary electrical connections | Electrical conditions, cabinet environment, mounting space and protective components |
From the Wiring Diagram to the Final Terminal Assembly
A complete project review helps determine the terminal series, required positions, mounting parts and accessory configuration.
Review the Wiring Diagram
Identify control, power, signal and auxiliary circuit connections.
Confirm Conductors
Confirm conductor sizes, types and required connection positions.
Select Terminal Models
Match TBC, TBR, TBD, TK, TA or TIN models to each circuit group.
Calculate Installation Space
Check terminal-group length, height, depth and wiring clearance.
Add Required Accessories
Add rails, bases, fixing parts, baffles, covers and markers.
Confirm the Final BOM
Review models, quantities, accessories, labels and packaging groups.
Details Required for Application-Based Product Matching
The Same Industry May Require Different Terminal Configurations
Application type provides an initial product direction, but final selection should be based on the exact circuit, conductor range, current level, pole quantity, mounting structure, installation space and accessory requirements.
Combined Terminal Block Manufacturing by SENTOP
SENTOP supports TBC, TBR, TBD, TK, TA and TIN combined terminal block production for industrial control panels, electrical machinery, distribution equipment and project-based wiring. Production management covers component preparation, terminal assembly, dimensional inspection, functional verification, accessory matching and final packaging.
Production Control for Main Terminals and Matching Accessories
Combined terminal blocks contain insulating housings, conductive metal parts, screws, pressure components and mounting structures. These components must be prepared and assembled according to the dimensions and connection structure of the selected terminal model.
For project orders, SENTOP can organize multiple terminal series, pole quantities, mounting parts, baffles, end components and protective covers according to the confirmed product list.
Inspection items and technical verification should be confirmed according to the exact product model, customer specification and order requirements.
Production Support for Combined Terminal Block Projects
TBC, TBR, TBD, TK, TA and TIN
Multiple combined terminal block families are available for different wiring and installation requirements.
- Different terminal structures
- Multiple conductor ranges
- Different mounting methods
Project-Based Pole Quantities
Terminal units can be organized according to the number of connection positions required by the project.
- Different pole quantities
- Separate circuit groups
- Spare-position preparation
Complete Installation Components
Main terminal units can be supplied with compatible mounting and protective accessories.
- Mounting rails and terminal bases
- Baffles and fixing components
- Protective-cover options
Multiple Series in One Project
Different terminal models and accessory combinations can be organized within one purchasing list.
- Mixed terminal models
- Accessory BOM organization
- Cabinet or machine grouping
Product Labels and Grouping
Products can be organized by model, machine, cabinet number or customer item code.
- Product-model identification
- Customer item-code labels
- Grouped package preparation
Batch and Repeat Supply
Supply planning can support sample confirmation, production orders and repeat purchasing.
- Sample-order preparation
- Batch production planning
- Repeat-order organization
Inspection from Incoming Components to Final Packaging
The exact inspection process depends on the selected terminal model and customer specification. A general quality-control process includes material checking, dimensional inspection, assembly review, appearance inspection and order verification.
Incoming Material Review
Review housings, metal components, screws and selected accessory parts.
Dimension Inspection
Check key product and component dimensions according to the selected model.
Assembly Inspection
Review screw positions, metal-part installation and housing assembly.
Appearance Inspection
Check housing condition, markings and visible component condition.
Functional Verification
Perform model-dependent connection or electrical verification where required.
Packaging Review
Confirm product models, quantities, labels and package groups.
Details Reviewed During Production and Order Preparation
From Product Confirmation to Batch Delivery
Review models, photos, drawings, conductor sizes and required quantities.
Confirm the terminal series, dimensions and installation structure.
Confirm rails, bases, fixing parts, baffles and protective covers.
Prepare samples or initial quantities where project verification is required.
Arrange production according to the approved model list and order quantity.
Review products, quantities, labels and package groups before shipment.
Need Combined Terminal Blocks for a Bulk or Project Order?
Send the required terminal series, existing model numbers, conductor sizes, pole quantities, mounting details, accessory list and order quantities. SENTOP can review the terminal and accessory requirements for your project.
Product models, photos, drawings and BOM files can be submitted.
Batch Production Should Follow the Confirmed Model and BOM
Terminal series, product dimensions, conductor range, mounting structure, accessories, labeling and packaging should be confirmed before batch production. Similar-looking terminal blocks may use different parts and mounting systems.
Combined Terminal Block Compliance and Material Verification
Certification, material and technical documentation requirements may vary between TBC, TBR, TBD, TK, TA and TIN combined terminal block models. SENTOP can review the required product series, application market and project documents before the order is confirmed.
Confirm Certificates and Technical Documents by Exact Model
Similar terminal blocks may use different insulating materials, conductive components, dimensions and electrical specifications. Certificates and technical files should therefore be matched to the exact product series and model instead of being selected only by product appearance.
RoHS Documentation
RoHS-related documentation may be reviewed for selected terminal models and project requirements.
- Confirm the exact terminal model
- Confirm the required document type
- Check the applicable product version
- Match documents to the order item
CE-Related Documentation
CE-related product information should be confirmed according to the selected model and intended market.
- Review the exact product family
- Confirm the intended application market
- Check available technical documentation
- Verify the applicable product scope
UL Model Verification
Where UL-related requirements apply, the available product model and certification scope should be checked individually.
- Confirm the required UL condition
- Check the selected terminal model
- Review conductor and electrical data
- Verify the requested supporting file
Housing Material Review
The insulating housing material and flame-resistance requirement should be confirmed for the exact model.
- Insulating material type
- Housing color requirement
- Temperature condition
- Model-dependent flame rating
Metal Component Verification
Conductive parts, screws and pressure components should match the structure and electrical requirements of the model.
- Conductive component structure
- Screw and pressure-part configuration
- Surface-treatment requirement
- Model-specific component dimensions
Batch and Package Identification
Model labels and package information help separate different terminal series, accessories and project groups.
- Product model identification
- Customer item-code labels
- Batch or project grouping
- Terminal and accessory separation
Technical Information That May Be Prepared for the Project
Match Each Document with the Exact Product and Order
| Document or Requirement | Information to Provide | Confirmation Focus |
|---|---|---|
| Product Datasheet | Complete terminal series and model number | Confirm dimensions, conductor range, mounting method and electrical data. |
| Product Drawing | Model, pole quantity and mounting requirement | Confirm individual terminal size and completed assembly dimensions. |
| RoHS Information | Exact model and required document format | Confirm the document applies to the selected product and order. |
| CE-Related File | Product model, market and application | Confirm the available document scope before order approval. |
| UL Requirement | Exact model, market and certification request | Verify the model and applicable certification scope individually. |
| Material Information | Housing, conductor or screw-material requirement | Match the requested material information to the selected terminal structure. |
| Packaging Labels | Customer code, model, quantity and grouping | Confirm label content and the separation of terminals and accessories. |
From Product Identification to Final File Confirmation
Preparing the exact model and document requirement at the beginning helps reduce repeated confirmation and incorrect file matching.
Confirm the Product
Identify the TBC, TBR, TBD, TK, TA or TIN model.
Confirm the Market
Provide the destination country or application market.
List Required Files
Specify the certificates, drawings or material files.
Review Availability
Match the available documents to the selected model.
Confirm Before Order
Approve the product and document list before purchasing.
Information Required for Faster Compliance Confirmation
Certificates Should Be Verified for the Exact Terminal Model
Certification and material documents may differ between product families, models and manufacturing versions. Confirm the exact terminal model, required market and document scope before approving the product for a project.
Combined Terminal Block FAQ
Find answers to common questions about TBC, TBR, TBD, TK, TA and TIN combined terminal blocks, including product selection, conductor matching, mounting methods, accessories, replacement models, documentation and project orders.
The Exact Terminal Model Should Be Confirmed Before Ordering
Product appearance alone is not enough to confirm a combined terminal block. Current, voltage, conductor size, terminal dimensions, pole quantity, mounting structure and accessory compatibility should be reviewed together.
01 What is a combined terminal block?
A combined terminal block is an assembly created from multiple terminal units and matching installation components. The completed group may include terminal blocks, mounting rails or bases, fixing parts, baffles, end components, markers and protective covers.
02 What are the differences between TBC, TBR, TBD, TK, TA and TIN?
These product families may differ in terminal size, conductor range, current direction, mounting structure, terminal-unit shape, protective configuration and available accessories. The correct series should be selected according to the exact wiring and installation requirements.
03 How do I select the correct combined terminal block?
Confirm the required current, voltage, wire size, conductor type, pole quantity, terminal dimensions, mounting method, available installation space and accessory requirements. Existing models, photos and drawings can also support product matching.
04 Can terminal blocks be selected only by rated current?
No. Rated current is only one selection factor. The conductor range, terminal opening, product dimensions, mounting rail or base, screw position, pole structure and accessory compatibility should also be checked.
05 Can SENTOP help match an existing terminal block model?
Product matching can be reviewed using the existing model number, brand, front and side photos, product dimensions, wire size, mounting rail or base and required accessories. A physical sample or drawing can provide additional reference information.
06 Can different terminal series be supplied in one order?
Yes. Project orders can contain multiple TBC, TBR, TBD, TK, TA and TIN models together with matching accessories. The products can be organized by model, cabinet, machine, project group or customer item code.
07 Which accessories are required for a complete terminal assembly?
The required accessories depend on the terminal series and installation structure. Common components include mounting rails, terminal bases, fixing plates, end parts, baffles, separators, connecting parts, markers and protective covers.
08 Are similar-looking terminal accessories interchangeable?
Not necessarily. Similar accessories may use different widths, side profiles, terminal pitches, mounting points, rail structures or cover dimensions. Accessories should be confirmed using the exact terminal series and model.
09 Can I order a specific number of terminal positions?
Terminal quantities can be prepared according to the required pole count. The completed assembly should also include the required spare positions, circuit separators, end components and mounting space.
10 Can terminal blocks be supplied with protective covers?
Selected terminal structures can use compatible transparent or protective covers. The cover length, width, fixing position and wiring clearance should match the completed terminal group.
11 What information is required for a quotation?
Provide the terminal series or model, required quantity, wire size, current and voltage conditions, pole quantity, mounting method, accessories, product photos and any labeling or packaging requirements.
12 Are certificates available for every terminal block model?
Certification availability and document scope may differ between product families and models. The exact terminal model, destination market and required certificate should be confirmed before the order is approved.
Information That Helps Answer Product Questions Faster
Final Answers Depend on the Exact Terminal Series and Model
General product information provides an initial selection direction. Exact current and voltage data, conductor range, dimensions, mounting structure, accessory compatibility and certification documents should be confirmed using the selected SENTOP model.
