MU1-B-34-450-1-C21-B-E
Littelfuse Inc.
The Littelfuse Inc. MU1-B-34-450-1-C21-B-E is a single-pole, magnetic hydraulic delay circuit breaker. It features a panel mount design and a push-to-reset actuator.
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The MU1-B-14-450-1-A21-B-E is a single-pole circuit breaker manufactured by Littelfuse Inc., designed for reliable overcurrent protection in electrical systems. Rated for 5 amperes at 250 volts, this component utilizes a magnetic hydraulic delay trip mechanism to prevent nuisance tripping during transient current spikes while ensuring rapid response to sustained overloads.
Engineered for durability and ease of integration, this breaker features a push-to-reset actuator for straightforward manual operation and maintenance. It mounts securely via a panel-mount configuration, making it suitable for industrial control panels, power distribution units, and custom equipment enclosures. The unit carries multiple international safety approvals, including UL, CSA, TUV, and CCC certifications, supporting global deployment across diverse regulatory environments.
Constructed without illumination features, this model prioritizes functional reliability and compact footprint within standard panel layouts. Its robust design ensures consistent performance under demanding operating conditions, providing essential circuit protection for sensitive downstream electronics and machinery.
250V
It uses a panel mount configuration.
A magnetic hydraulic delay mechanism prevents nuisance tripping.
No, this unit has no illumination.
It holds UL, CSA, TUV, and CCC approvals.