ABB Phase, Voltage Monitoring Relay, 3 Phase, DPDT, 300 → 500V ac, DIN Rail

Shut down electrical faults before they reach your gear with this monitoring relay from ABB. It watches out for phase failure, overvoltage and undervoltage, packing comprehensive electrical protection into one handy component. When the unit detects a problem, it instantly trips the circuit breaker, so it's sure to stop faults from becoming hazardous and drives down the risk of hardware damage. Fast DIN rail mounting means you can leave your tools in the box.

• Wide voltage monitoring range between 300 and 500V AC, fitting in with many power supplies
• Electrical service life of 100,000 cycles for long-lasting fault detection
• Narrow body measurements of 103.7 (L) x 22.5 (W) x 85.6mm (H) to slot into busy cabinets
• Built-in time delay between 0 and 30s gives you the option to filter out noise and transient events

• Food production
• Packing plants
• Manufacturing industry

No, this unit's powered by the circuit it monitors, so there's no need to hook up a separate electrical supply.