AA1-B0-21-625-1D1-C
Littelfuse Inc.
The Littelfuse Inc. AA1-B0-21-625-1D1-C is a single-pole, magnetic hydraulic delay circuit breaker. It features a panel mount design and a lever actuator.
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The AA1-B0-24-625-3B1-C is a single-pole circuit breaker manufactured by Littelfuse Inc., designed for reliable overcurrent protection in electrical systems. Engineered for demanding environments, this component delivers a continuous current rating of 25A and operates safely at a maximum voltage of 277V. The internal mechanism employs a magnetic hydraulic delay trip characteristic, which allows brief inrush currents without nuisance tripping while ensuring rapid disconnection during sustained fault conditions.
Mechanically, the unit is configured for panel mounting, making it suitable for integration into standard electrical enclosures and switchgear assemblies. Operation is facilitated through a robust manual lever actuator, providing clear visual status indication and straightforward reset functionality for maintenance personnel. The device does not include integrated illumination, keeping the design focused on core protective functions and mechanical durability.
Global market deployment is supported by comprehensive third-party certifications, including approvals from UL, CSA, and CCC. These credentials verify adherence to stringent safety standards across North American and Asian regulatory frameworks. Engineers can confidently specify this breaker for commercial building distribution panels, industrial machinery control circuits, and renewable energy system branch protection where verified performance and certified safety are mandatory.
277V
It has one pole.
A manual lever actuator is used.
No, it has no illumination feature.
It is approved by UL, CSA, and CCC.