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The 3131-AF1PT-000000-3Y2-5A is a thermal circuit breaker manufactured by E-T-A. This electromechanical protection device is designed to monitor electrical current flow and automatically open the circuit when a sustained overload condition is detected. The unit operates at a 240VAC voltage rating and handles a continuous current of 5A.
Thermal circuit breakers utilize a bimetallic strip that bends under heat generated by excessive current. Once the threshold is reached, the mechanical linkage trips the contacts, halting power delivery. This model includes secondary voltage ratings of 250VAC and 32VDC, allowing integration into various AC and low-voltage DC control architectures.
Design engineers typically specify this component for machine control panels, industrial automation systems, and commercial power distribution networks. The device provides a resettable alternative to fuses, enabling rapid service restoration after an overload event. Proper sizing requires matching the 5A rating to the protected load while ensuring ambient temperature conditions do not derate the trip curve below operational requirements.
The component is rated for 240VAC operation, with additional ratings of 250VAC and 32VDC listed in the product specifications.
The device is rated for 5A continuous current operation before thermal tripping occurs.