DESCRIPTION

The UTC LM1851 is designed to provide ground fault protection for AC power outlets in consumer and industrial environments. Ground fault currents greater than a presentable threshold value will trigger an external SCR-driven circuit breaker to interrupt the AC line and remove the fault condition. In addition to detection of conventional hot wire to ground faults, the neutral fault condition is also detected.

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