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AA1-B0-56-620-5B1-C Littelfuse AA1-B0-56-620-5B1-C is a 20A, 277V, 1-pole magnetic (hydraulic delay) circuit breaker with panel mount and lever actuator. It is approved by CCC, CSA, and UL.
Mfr Part #:

AA1-B0-56-620-5B1-C

Mfr Name: Littelfuse Inc.
Littelfuse Inc.
Littelfuse AA1-B0-56-620-5B1-C is a 20A, 277V, 1-pole magnetic (hydraulic delay) circuit breaker with panel mount and lever actuator. It is approved by CCC, CSA, and UL.
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AA1-B0-56-620-5B1-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-B0-56-620-5B1-C Description

Short technical summary and product information.

The Littelfuse AA1-B0-56-620-5B1-C is a single-pole magnetic circuit breaker featuring hydraulic delay for overcurrent protection. Rated at 20A and 277V, it is designed for panel mount installation with a lever actuator. The magnetic (hydraulic delay) mechanism provides precise trip characteristics suitable for a variety of applications. This circuit breaker is non-illuminated and carries approvals from CCC, CSA, and UL, ensuring compliance with international standards. Its robust construction makes it suitable for use in industrial control panels, power distribution, and equipment protection where reliable circuit interruption is required.

AA1-B0-56-620-5B1-C Quick Information

Product Type: Circuit Breaker
Series: AA1
Canonical Name: Littelfuse AA1-B0-56-620-5B1-C 20A 277V 1-Pole Magnetic (Hydraulic Delay) Circuit Breaker, Panel Mount, Lever Actuator
Subcategory: Magnetic Circuit Breaker

AA1-B0-56-620-5B1-C Compliance

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

AA1-B0-56-620-5B1-C Features

  • Rated for 20A continuous current.
  • Operates at 277V AC voltage.
  • Single-pole magnetic hydraulic delay design.
  • Panel mount with lever actuator.
  • Approved by CCC, CSA, and UL.

AA1-B0-56-620-5B1-C Applications

  • Used in industrial control panel protection.
  • Suitable for power distribution equipment.
  • Ideal for overcurrent protection in machinery.
  • Applied in commercial building electrical systems.

AA1-B0-56-620-5B1-C FAQs

7 frequently asked questions generated from this part’s specifications.
What is the current rating of the AA1-B0-56-620-5B1-C?

20A.

What is the voltage rating?

277V.

What type of circuit breaker is this?

Magnetic (Hydraulic Delay).

How many poles does it have?

1 pole.

What is the mounting type?

Panel Mount.

What actuator type does it use?

Lever.

What approvals does it have?

CCC, CSA, UL.

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AA1-B0-34-620-1G2-C is a 1-pole magnetic (hydraulic delay) circuit breaker rated 20A at 277V, with lever actuator and panel mount.
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BA1-B0-22-620-211-C
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