AC Current Protection Relays

AC current protection relays continuously monitor single phase or three phase AC currents, either directly or through current transformers, tripping upon fault condition. The output relay trips when the monitored current is outside of the user adjustable limit and the LED illuminates indicating a fault condition. The trip point on all models is adjustable from 20% to 120% of the nominal current through the front control knob. The output relay is set to de-energise in the under current condition ensuring the protection relays are failsafe. The relays are auxiliary powered and are available with either a single or double pole changeover relay output and optional built-in time delay.

Key Terms: B867-1A - B867-1B - B867-3A - B867-3B - TA867 - Current - Protection Relay