AA1-B0-20-450-2D1-C
Littelfuse Inc.
The Littelfuse Inc. AA1-B0-20-450-2D1-C is a 1-pole, magnetic (hydraulic delay) circuit breaker. It features a 5A current rating and a 277V voltage rating.
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This Littelfuse circuit breaker is a 1-pole magnetic hydraulic delay type designed for overcurrent protection. It is rated for 5A continuous current at 277V and features a hydraulic-magnetic trip mechanism that provides precise time-delay characteristics. The breaker is panel mounted with a lever actuator and does not include illumination. It carries approvals from CCC, CSA, and UL, indicating compliance with international safety standards.
The panel mount design allows for easy installation in industrial control panels, power distribution units, and other equipment. The hydraulic delay element helps prevent nuisance tripping during temporary inrush currents while providing reliable protection against sustained overloads and short circuits. This breaker is suitable for AC or DC applications within its ratings.
As a non-illuminated, lever-actuated device, it offers a simple and robust interface for manual reset. The 1-pole configuration is common for single-phase circuits or individual branch protection.
277V.
5A.
1 pole.
Magnetic (Hydraulic Delay).
Panel mount.
CCC, CSA, and UL.