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AA1-B0-24-620-4B1-C This magnetic hydraulic delay circuit breaker from Littelfuse is rated for 20A at 277V. It features a single pole, lever actuator, and panel mount design.
Mfr Part #:

AA1-B0-24-620-4B1-C

Mfr Name: Littelfuse Inc.
Littelfuse Inc.
This magnetic hydraulic delay circuit breaker from Littelfuse is rated for 20A at 277V. It features a single pole, lever actuator, and panel mount design.
Stock on Request

AA1-B0-24-620-4B1-C Specifications Quick View

Most important parameters for selection – full specs in datasheet.
Category
Manufacturer Name
Actuator Type
Approval Agency
Breaker Type
Current Rating
Current Rating (Amps)
Illumination
Mounting Type
Number of Poles
Voltage Rating
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AA1-B0-24-620-4B1-C Description

Short technical summary and product information.

The Littelfuse AA1-B0-24-620-4B1-C is a single-pole magnetic hydraulic delay circuit breaker designed for reliable overcurrent protection. It is rated for 20A continuous current at 277V AC, making it suitable for a variety of industrial and commercial applications.

 

The breaker employs a hydraulic-magnetic trip mechanism, which provides stable performance over a wide temperature range without the need for thermal compensation. The lever actuator allows for manual reset after a trip event. Mounting is via panel mount, simplifying installation in control cabinets and distribution panels.

 

This component carries approvals from CCC, CSA, and UL, ensuring compliance with major international safety standards. The non-illuminated design is typical for industrial circuit breakers where visual indication is not required.

AA1-B0-24-620-4B1-C Quick Information

Product Type: Magnetic Circuit Breaker
Canonical Name: Magnetic (Hydraulic Delay) Circuit Breaker, 20A, 277V, 1 Pole, Panel Mount
Subcategory: Single Pole Magnetic Circuit Breaker

AA1-B0-24-620-4B1-C Compliance

RoHS Status: RoHS Compliant
Moisture Sensitivity Level (MSL): 1 Unlimited
REACH Status: REACH Unaffected

AA1-B0-24-620-4B1-C Features

  • 20A current rating for circuit protection.
  • 277V voltage rating for electrical systems.
  • Magnetic hydraulic delay breaker type.
  • Single pole configuration for panel mounting.
  • Lever actuator for manual operation.

AA1-B0-24-620-4B1-C Applications

  • Branch circuit protection in power distribution.
  • Overcurrent protection for lighting control panels.
  • Suitable for HVAC equipment circuits.
  • Used in industrial automation control panels.
  • Ideal for commercial building electrical systems.

AA1-B0-24-620-4B1-C FAQs

7 frequently asked questions generated from this part’s specifications.
What is the voltage rating of this circuit breaker?

277V.

What is the current rating?

20A.

How many poles does it have?

1 pole.

What type of breaker is this?

Magnetic (Hydraulic Delay).

What is the actuator type?

Lever.

What mounting type does it have?

Panel Mount.

What approvals does this breaker hold?

CCC, CSA, UL.

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