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RV4145A Series

Ground Fault Circuit Interrupter (GFCI) Controller, Low Power

Manufacturer: ON Semiconductor

Catalog

Ground Fault Circuit Interrupter (GFCI) Controller, Low Power

Key Features

No potentiometer required
Direct interface to SCR
Supply voltage derived from AC line - 26 V shunt
Adjustable sensitivity
Grounded neutral fault detection
Meets UL943 standards
450µA quiescent current
Ideal for 120 V or 220 V systems

Description

AI
The RV4145A is a low power controller for AC outlet ground fault interrupters. These devices detect hazardous grounding conditions, such as equipment (connected to opposite phases of the AC line) in contact with a pool of water and open circuits the line before a harmful or lethal shock occurs. Contained internally are a 26V zener shunt regulator, an op amp, and an SCR driver. With the addition of two sense transformers, a bridge rectifier, an SCR, a relay and a few additional components, the RV4145A will detect and protect against both hot wire to ground and neutral wire to ground faults. The simple layout and conventional design ensure ease of application and long-term reliability.