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MU1-B-12-430-A-A21-B-M is a single-pole circuit breaker from Littelfuse Inc. It uses a magnetic hydraulic-delay mechanism and is rated for 3A at 250V. The breaker is controlled by a push-to-reset actuator and has no illumination.
The device is designed for panel mounting and is approved by CCC, CSA, and UL1077. The magnetic hydraulic-delay trip characteristic provides overcurrent protection with intentional time delay, helping to avoid nuisance tripping from transient inrush currents.
This breaker is intended for electrical equipment requiring panel-mounted, resettable overcurrent protection. The single-pole format fits control panels, power distribution equipment, and other industrial electrical enclosures.
The voltage rating is 250V.
It is designed for panel mounting.
The current rating is 3A.
It is a magnetic hydraulic-delay circuit breaker.
It has 1 pole.
It uses a push-to-reset actuator.
It is approved by CCC, CSA, and UL1077.