Voltage Monitoring Relay - 415 V AC SPP, 40 V Asymmetry, 1 C/O is a voltage monitoring relay designed for single phasing protection on 415 V AC 3-phase supplies. It monitors phase loss, phase sequence and 40 V phase asymmetry with one C/O relay output.
🔧 Technical Highlights:
- Supply / Input: 415 V AC
- Monitoring Type: Single phasing protection within a voltage monitoring relay
- Monitored Faults: Phase loss, phase sequence and phase asymmetry
- Phase Asymmetry: 40 V +/- 10 V
- Relay Output: 1 C/O
- Contact Rating: 5 A NO / 3 A NC @ 250 V AC / 28 V DC resistive
- Power Consumption: 15 VA
- Mounting: Base / DIN rail
✅ 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
MA51BK 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 MA51BK?
A: 40 V asymmetry 415 V AC monitoring for phase loss, sequence and SPP, 1 C/O.