AA1-B0-21-620-1D2-C
Littelfuse Inc.
The Littelfuse Inc. AA1-B0-21-620-1D2-C is a single-pole, magnetic (hydraulic delay) circuit breaker. It features a 20A current rating and a 277V voltage rating.
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The Littelfuse AA1-B0-34-620-3D1-C is a single-pole magnetic hydraulic delay circuit breaker designed for overcurrent protection. It is rated for 20A continuous current at 277V AC. The breaker uses a hydraulic-magnetic mechanism that provides precise time-delay characteristics, making it suitable for applications requiring inrush protection.
This circuit breaker features a lever actuator for manual reset and panel mount installation. It is approved by CCC, CSA, and UL, ensuring compliance with international safety standards. The compact design allows integration into control panels, power distribution units, and industrial equipment.
With a single pole configuration, the breaker is ideal for branch circuit protection in lighting, HVAC, and machinery. The magnetic hydraulic delay technology offers reliable performance under varying temperature conditions without the need for derating.
20A.
277V.
Magnetic (Hydraulic Delay).
1.
Panel Mount.
Lever.
CCC, CSA, UL.