Voltage Protection Relays

Voltage protection relays that monitor supply voltage and disconnect or alarm during under-voltage, over-voltage, or phase-related issues. Voltage-protection relays supervise supply conditions such as overvoltage, undervoltage, phase loss or sequence, depending on design. They can disconnect sensitive loads or trigger alarms before damage occurs. Match sensing range, trip delays, phase configuration and contact outputs to the source and protection scheme; they do not replace upstream fault-current protection.