The DPA51CM44 PHASE MONITORING RELAY is a compact 3-phase monitoring relay designed to detect phase sequence faults and phase loss in industrial power systems. It continuously monitors three-phase voltage supply and ensures safe operation of motors, pumps, compressors, and other equipment by disconnecting the output when abnormal conditions occur.
Key Features
- Detects phase loss and incorrect phase sequence
- Continuous monitoring of 3-phase AC supply
- Compact 17.5 mm DIN-rail mounting design
- Built-in relay output for control and protection circuits
- No external power supply required (self-powered from mains)
- Wide voltage monitoring range for industrial networks
- Fast response for equipment protection
- Suitable for harsh industrial electrical environments
Specifications
- Model: DPA51CM44
- Type: 3-Phase Monitoring Relay
- Monitoring Functions: Phase loss, phase sequence
- Supply Voltage: 208–480 V AC (3-phase system)
- Frequency: 50–60 Hz
- Output: 1 × SPDT relay
- Contact Rating: 5 A / 250 V AC
- Mounting: DIN-rail (17.5 mm width)
- Operating Principle: True RMS voltage monitoring
- Response Time: approx. 100–300 ms (typical)
- Application: Motors, pumps, compressors, industrial drives, automation panels, protection systems
