SENTOP RM-3AA33 NEW Series
High-Precision Three-Phase Digital Ammeter | Intelligent Current Sensing
High-Precision Monitoring Solution
The SENTOP RM-3AA33 is a premier “NEW Series” intelligent three-phase ammeter designed for environments requiring extreme accuracy and long-term stability. It monitors three-phase alternating currents (Ia, Ib, Ic) simultaneously, offering programmable CT ratios for seamless integration with varied industrial loads. Built with advanced SMT technology and an RS485 communication module, it serves as a critical data node for SCADA systems and building automation, ensuring precise load balancing and energy efficiency.
Technical Specifications
| Performance Category | Detailed Technical Data |
|---|---|
| Measurement Range | 3-Phase AC Current (Ia, Ib, Ic); Programmable CT Ratio |
| Accuracy Class | Standard: Class 0.5; High-Precision: Class 0.2 Optional |
| Rated Input Current | AC 1A or AC 5A (Direct input up to 5A) |
| Overload Performance | Continuous: 1.2x Rated; Instantaneous: 10x Rated (5 seconds) |
| Frequency Range | 45 – 65Hz |
| Power Supply | Universal AC/DC 85V – 265V or AC 220V; ≤ 5VA Power Consumption |
| Communication Interface | RS485 Port, Modbus-RTU Protocol; Baud rate: 2400 – 9600 bps |
| Display Mode | 3 rows of 4-digit high-brightness LED digital tubes (Red) |
| Dielectric Strength | Power/Input/Output: ≥ AC 2kV / 1 min; Insulation Resistance: ≥ 100MΩ |
| Dimensions (mm) | Panel: 96×96; Cutout: 92×92; Depth: 80mm |
| Enclosure Material | High-Grade ABS+PC Flame Retardant Plastic |
Advanced Sensing Technology
- True RMS: Measures current accurately even with non-linear loads and harmonics.
- Precision CT Scaling: Easily programmable via front panel to match any transformer ratio.
- Anti-Drift Circuitry: Ensures stable readings regardless of ambient temperature changes.
Reliable Industrial Design
- High EMC Immunity: Designed for noise-heavy industrial substations and plants.
- Robust Terminals: High-quality industrial-grade wiring ports for secure electrical contact.
- Modular Architecture: Simple snap-on installation for all standard electrical cabinets.
Industry Applications
🏭 Manufacturing Plants
Standard ammeter for motor control centers and automated production lines.
☁️ Tier 3 Data Centers
Critical load monitoring to prevent phase imbalance and ensure server uptime.
⚡ Smart Grid Substation
RS485 integration for real-time telemetry in intelligent power distribution boards.
Request a Detailed Quote or Technical Support
SENTOP provides professional OEM/ODM services and bulk wholesale pricing for the RM-3AA33 high-precision range.
