ABB UNS 3670A-Z Ground Fault Relay

Description

The ABB UNS 3670A-Z Ground Fault Relay is a specialized protective device for electrical power systems, designed to detect ground faults and safeguard equipment and personnel from associated damage. While direct technical specifications for this model are unavailable, reference to the comparable ABB SPAJ110C Ground Fault Relay reveals key performance and design attributes typical of ABB’s ground fault relay line. Core functions include reliable detection of ground fault currents, with rapid response capabilities to immediately interrupt fault currents and prevent further system harm. Key features include high operational reliability in harsh, debris-filled environments, configurable settings to accommodate diverse application requirements, a compact form factor for easy installation and maintenance, and robust environmental resilience. Typical technical parameters for this class of relay include a power voltage range of 24V DC or 230V AC, 1A rated current, ground fault current detection range of 30mA to 2A, response time of ≤20 milliseconds, reset time of ≤0.5 seconds, 1 single-pole double-throw contact, and an RS-485 communication interface. Environmental ratings include operating temperature of -20 degrees Celsius to 55 degrees Celsius, storage temperature of -40 degrees Celsius to 85 degrees Celsius, non-condensing humidity tolerance of 5% to 95%, and vibration resistance of 5g from 10Hz to 500Hz.