CS1-B0-12-690-A21-MG

The CS1-B0-12-690-A21-MG is a single-pole circuit breaker manufactured by Littelfuse Inc. engineered for reliable overcurrent protection in industrial and commercial electrical systems. The unit operates at a rated voltage of 480V and handles a continuous current load of 90A. Its internal magnetic hydraulic delay trip mechanism allows brief inrush currents typical of motor loads while ensuring rapid interruption during sustained overloads or short circuits.

Mechanically, this component is designed for direct panel mount installation. It incorporates a manual lever actuator for straightforward on/off switching and visual position indication. The design does not include integrated illumination, keeping the assembly simple and cost-effective for standard control panels.

Certification coverage includes UL489, CSA, and CCC approvals, verifying compliance with North American and Chinese safety standards for molded case circuit breakers. These certifications support integration into regulated equipment and infrastructure projects requiring documented safety validation.

Design engineers typically deploy this breaker in main distribution boards, sub-panel feeds, and heavy machinery control centers. The panel mount form factor simplifies enclosure retrofitting and new build layouts where standardized cutouts and terminal spacing are required.