A21-B0-34-640-5A1-E The A21-B0-34-640-5A1-E is a circuit breaker from Littelfuse Inc. with a 40A current rating and 250V voltage rating. It features a magnetic hydraulic delay mechanism and is designed for panel mounting.
Mfr Part #:

A21-B0-34-640-5A1-E

Mfr Name: Littelfuse Inc.
Littelfuse Inc.
The A21-B0-34-640-5A1-E is a circuit breaker from Littelfuse Inc. with a 40A current rating and 250V voltage rating. It features a magnetic hydraulic delay mechanism and is designed for panel mounting.
Stock on Request
$ Price Range: $0.99

A21-B0-34-640-5A1-E 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

A21-B0-34-640-5A1-E Description

Short technical summary and product information.

This circuit breaker, model A21-B0-34-640-5A1-E, is manufactured by Littelfuse Inc. and falls under the category of circuit protection devices. It is rated for a current of 40 amperes and a voltage of 250 volts. The breaker employs a magnetic hydraulic delay mechanism, suitable for applications requiring precise trip characteristics. It has a single pole configuration and is designed for panel mounting, making it suitable for various electrical systems requiring reliable overcurrent protection. The device is approved by CCC, CSA, TUV, and UL, ensuring compliance with multiple safety standards. Its physical design includes a rocker actuator for manual operation, and it does not feature illumination. The product is intended for use in electrical panels and systems where circuit protection is necessary.

A21-B0-34-640-5A1-E Quick Information

Product Type: Circuit Breaker
Canonical Name: Littelfuse Inc. A21-B0-34-640-5A1-E Circuit Breaker

A21-B0-34-640-5A1-E Compliance

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

A21-B0-34-640-5A1-E Estimated Pricing

Qty Low High
1+ $0.99 $0.99

Estimated market price range - modelled values for guidance only, not live distributor offers.

A21-B0-34-640-5A1-E Features

  • Rated for 40A current
  • Operates at 250V voltage
  • Magnetic hydraulic delay mechanism
  • Panel mount design
  • Multiple safety approvals

A21-B0-34-640-5A1-E Applications

  • Used in electrical panel protection
  • Suitable for industrial circuit systems
  • Provides overcurrent protection
  • Ideal for building electrical systems

A21-B0-34-640-5A1-E FAQs

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

The voltage rating is 250V.

What is the current rating of this circuit breaker?

The current rating is 40A.

What mounting type does this circuit breaker use?

It uses a panel mount.

What approval agencies have certified this circuit breaker?

It is approved by CCC, CSA, TUV, and UL.

A21-B0-34-640-5A1-E Alternate Parts

Same form/fit/function or matching attribute configuration across different manufacturers.
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AK1-B0-22-640-H24-E
Littelfuse Inc.
The Littelfuse Inc. AK1-B0-22-640-H24-E is a single-pole, magnetic hydraulic delay circuit breaker. It features a 40A current rating and a 250V voltage rating.
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CF1-B0-12-640-6FG-E
CF1-B0-12-640-6FG-E
Littelfuse Inc.
The Littelfuse Inc. CF1-B0-12-640-6FG-E is a single-pole, magnetic hydraulic delay circuit breaker. It features a 40A current rating and a 250V voltage rating.
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AF1-B0-26-640-G12-E
AF1-B0-26-640-G12-E
Littelfuse Inc.
The Littelfuse Inc. AF1-B0-26-640-G12-E is a single-pole, magnetic (hydraulic delay) circuit breaker rated for 40A and 250V. It features a panel mount design with a rocker actuator.
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C11-B0-34-640-131-E
C11-B0-34-640-131-E
Littelfuse Inc.
The Littelfuse Inc. C11-B0-34-640-131-E is a magnetic (hydraulic delay) circuit breaker. It features a 40A current rating and a 250V voltage rating.
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