The GIC MD71B9 is an under/over voltage monitoring relay for 240 VAC supplies. A selectable ON delay avoids nuisance tripping at power-up and brown-outs.
🔧 Technical Highlights:
- Supply Voltage: 208–480 VAC or 240 VAC (model specific)
- Functions: Under/Over voltage monitoring with phase loss & sequence detection; adjustable thresholds and delays
- Timing Range: ON/OFF delay selectable up to 15 s (model specific)
- Output Contacts: 1 C/O or 2 C/O
- Contact Rating: 5A @ 250 VAC / 28 VDC (resistive)
- Asymmetry and neutral-loss detection (some models)
- LED indications
✅ Benefits:
- Protects equipment from prolonged low/high mains conditions
- Delay avoids false trips during dips and restarts
- Compact footprint for crowded panels
🚀 Applications:
- Control transformers and auxiliary supplies
- Industrial PLC and HMI power protection
- Pumps, HVAC and lighting circuits
MD71B9 adds dependable UV/OV protection with a wide selectable ON delay for stable operation.
FAQs
- Q: What supply range does the relay monitor?
A: It is specified for 240 VAC systems.
- Q: What output contacts are provided?
A: It provides Relay contact.