RV4140A

The RV4140A is a low power controller for AC outlet appliance leakage circuit interrupters. These devices detect hazardous current paths to ground such as an appliance falling into water. The interrupter then open circuits the line before a harmful or lethal shock occurs.

Internally, the RV4140A has a diode bridge rectifier, zener shunt regulator, op amp, current reference, time delay circuit, latch and SCR driver.

An external sense transformer, SCR, relay, two resistors and three capacitors complete the design of the circuit interrupter. The simple layout and minimum component count ensure ease of application and long term reliability.