Allen-Bradley 810-A03B Relay

Description

• The Allen-Bradley 810-A03B is an inverse time current relay designed for time-current coordination and overcurrent protection in electrical systems. It is part of the 810 series of relays and has a maximum voltage rating of 600V AC/DC.

• The 810-A03B relay operates based on the principle of inverse time-current characteristics, where the operating time decreases as the current magnitude increases. This allows for effective protection against overcurrent conditions by initiating appropriate actions such as tripping circuit breakers or activating alarms.

• This relay is specifically designed to handle a coil current of 4A. The coil current is an important parameter to consider when selecting and sizing the control circuit components for proper operation.

• Inverse time current relays like the 810-A03B are commonly used in various applications such as motor protection, transformer protection, feeder protection, and coordination of protective devices in electrical distribution systems.