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AA1-B0-21-640-5B2-C The Littelfuse Inc. AA1-B0-21-640-5B2-C is a 1-pole, panel mount circuit breaker. It features a 40A current rating and a 277V voltage rating.
Mfr Part #:

AA1-B0-21-640-5B2-C

Mfr Name: Littelfuse Inc.
Littelfuse Inc.
The Littelfuse Inc. AA1-B0-21-640-5B2-C is a 1-pole, panel mount circuit breaker. It features a 40A current rating and a 277V voltage rating.
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AA1-B0-21-640-5B2-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-B0-21-640-5B2-C Description

Short technical summary and product information.

This Littelfuse Inc. circuit breaker, part number AA1-B0-21-640-5B2-C, is designed for panel mounting. It operates with a 40A current rating and a voltage rating of 277V.

 

The breaker type is magnetic with a hydraulic delay, and it has a single pole configuration. The actuator is a lever type, and it does not feature illumination. It is compliant with RoHS3 standards and has an MSL of 1.

 

Approval agencies for this component include CCC, CSA, and UL. Its mounting type is panel mount, making it suitable for integration into various electrical enclosures and control panels.

AA1-B0-21-640-5B2-C Quick Information

Product Type: Circuit Breaker
Series: AA1
Canonical Name: Littelfuse Inc. AA1-B0-21-640-5B2-C Circuit Breaker
Subcategory: Circuit Breaker

AA1-B0-21-640-5B2-C Compliance

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

AA1-B0-21-640-5B2-C Features

  • 40A current rating for power distribution.
  • 277V voltage rating for AC applications.
  • Panel mount design for easy integration.
  • Magnetic (hydraulic delay) breaker type.
  • Lever actuator for manual operation.

AA1-B0-21-640-5B2-C Applications

  • Suitable for electrical control panels.
  • Used in power distribution systems.
  • Ideal for industrial equipment protection.
  • Applicable in building automation.

AA1-B0-21-640-5B2-C FAQs

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

40A.

What is the voltage rating?

277V.

How many poles does this breaker have?

1 pole.

What type of circuit breaker is this?

Magnetic (Hydraulic Delay) circuit breaker.

What actuator type does it use?

Lever actuator.

What is the mounting type?

Panel mount.

Does this circuit breaker have illumination?

No, it has no illumination.

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