GM1851

DESCRIPTION

The UTC GM1851 can specially provide ground fault 

protection for AC power outlets in consumer and industrial 

environments. As ground fault currents greater than a presentable 

threshold value, it will trigger an external SCR-driven circuit 

breaker to interrupt the AC line and remove the fault condition. 

Besides of detection of conventional hot wire to ground faults, the 

neutral fault condition is detected also. In the event that noise 

pulses introduce unwanted charging currents and a memory 

circuit that allows firing of even a sluggish breaker on either 

half-cycle of the line voltage when external full-wave rectification 

is used, circuitry that rapidly resets the timing capacitor. 

 FEATURES 

* Internal power supply shunt regulator 

* Externally programmable fault current threshold 

* Externally programmable fault current integration time 

* Direct interface to SCR 

* Operates under line reversal; both load vs line and hot vs neutral

* Detects neutral line faults

规格书GM1851