GROUND FAULT INTERRUPTER

DESCRIPTION

The UTC GF4147 is a low-power Ground Fault Interrupter

controller for detecting hazardous current paths to ground and

ground-to-neutral faults. The UTC GF4147 application circuit

opens the load contacts before a harmful shock occurs.

The UTC GF4147 circuitry has a built-in rectifier and shunt

regulator that operates with a low quiescent current. The low-V OS

offset-sense amplifier allows direct coupling of the sense coil to

the amplifier’s feedback signal. This eliminates the large 50/60Hz

AC-coupling capacitor.

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FEATURES

* For GFCI and RCD Applications

* Built-in AC Rectifier

* Built-in Noise Filter

* Low-Voltage SCR Disable

* Direct DC Coupled to Sense Coil

* SCR Gate Driver

* Adjustable Sensitivity

* Low Quiescent Current

* Minimum External Components

* Ideal for 120V or 220V Systems