Voltage Monitoring Relay - 208-480 V AC UV/OV + SPP, OFF Delay, 1 C/O is a voltage monitoring relay designed for UV/OV and single phasing protection on 3-phase 3-wire supplies. It monitors UV, OV and phase faults with selectable OFF delay and one C/O relay output.
🔧 Technical Highlights:
- Supply / Input: 208-480 V AC, 3-phase 3-wire
- Monitoring Type: UV/OV and single phasing protection
- SPP Feature: Phase loss, phase sequence and phase asymmetry monitoring
- Delay Type: Selectable OFF delay
- Relay Output: 1 C/O
- Contact Rating: 5 A @ 250 V AC / 30 V DC resistive
- Operating Temperature: -15°C to +60°C
- Mounting Width: 17.5 mm
✅ Benefits:
- Presents the product clearly as a voltage monitoring relay, with SPP as a monitored feature.
- Provides relay output switching for alarms, interlocks or protection circuits.
- Helps maintenance teams identify supply faults before connected equipment is restarted.
- Supports reliable motor, pump and distribution-panel operation.
🚀 Applications:
- Three-phase motor control panels
- Pump, fan and compressor starters
- Industrial distribution and MCC panels
- Machine safety and fault signalling circuits
MG21DF provides clear voltage monitoring relay performance for dependable panel protection and fault signalling.
FAQs
- Q: What does this voltage monitoring relay monitor?
A: It monitors the specified supply conditions and switches its relay output when the selected fault condition is detected.
- Q: What is the main selection detail for MG21DF?
A: OFF-delay 208-480 V AC UV/OV monitoring with single phasing protection, 1 C/O.