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The AA1-B0-21-620-3D1-C is a single-pole magnetic hydraulic delay circuit breaker from Littelfuse. Rated at 20A and 277V, it provides overcurrent protection with a time-delay characteristic that reduces nuisance tripping on moderate overloads.
The breaker features a panel mount design with a lever actuator for manual on/off control. It is approved by UL, CSA, and CCC, making it suitable for a wide range of industrial and commercial applications.
With its magnetic hydraulic delay mechanism, this breaker offers precise trip performance and high reliability. The compact 1-pole format fits standard panel cutouts and is ideal for use in distribution boards, control panels, and equipment power supplies.
20A.
277V.
1 pole.
Magnetic (Hydraulic Delay) circuit breaker.
Panel mount.
CCC, CSA, UL.
Lever actuator.