A21-B0-34-450-5B1-I The Littelfuse A21-B0-34-450-5B1-I is an A-Series hydraulic-magnetic circuit breaker. It offers a 5A current rating and a 250V voltage rating.
Mfr Part #:

A21-B0-34-450-5B1-I

Mfr Name: Littelfuse Inc.
Littelfuse Inc.
The Littelfuse A21-B0-34-450-5B1-I is an A-Series hydraulic-magnetic circuit breaker. It offers a 5A current rating and a 250V voltage rating.
Stock on Request
$ Price Range: $0.99

A21-B0-34-450-5B1-I 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
Storage Temperature
Tape & Reel
Termination
Voltage Rating

A21-B0-34-450-5B1-I Description

Short technical summary and product information.

The Littelfuse A21-B0-34-450-5B1-I is a single-pole, hydraulic-magnetic circuit breaker from the A-Series. It is designed for demanding OEM environments and provides reliable circuit protection.

 

Key electrical specifications include a current rating of 5A and a voltage rating of 250V. The breaker type is magnetic with a hydraulic delay, suitable for various applications requiring specific trip characteristics. It features a rocker actuator for easy operation and is illuminated with a two-color flat Visi-Rocker.

 

This circuit breaker is designed for panel mounting with a threaded insert and uses screw termination. Agency approvals include CCC, CSA, UL1077, and UL1500, ensuring compliance with industry standards. The A-Series circuit breakers are known for their rugged construction and dependable performance in diverse applications.

A21-B0-34-450-5B1-I Quick Information

Product Type: Circuit Breaker
Series: A-Series
Canonical Name: A-Series Hydraulic Magnetic Circuit Breaker
Subcategory: Hydraulic-Magnetic Circuit Breaker

A21-B0-34-450-5B1-I Compliance

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

A21-B0-34-450-5B1-I Estimated Pricing

Qty Low High
1+ $0.99 $0.99

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

A21-B0-34-450-5B1-I Features

  • 5A current rating for circuit protection.
  • 250V voltage rating for electrical systems.
  • Single pole configuration for simple circuits.
  • Rocker actuator for manual operation.
  • Panel mount design for integration.

A21-B0-34-450-5B1-I Applications

  • Ideal for power distribution circuits.
  • Suitable for industrial control panels.
  • Used in transportation equipment.
  • Applicable in marine systems.
  • Protects sensitive electronic loads.

A21-B0-34-450-5B1-I FAQs

7 frequently asked questions generated from this part’s specifications.
What is the current rating of the A21-B0-34-450-5B1-I circuit breaker?

The current rating is 5A.

What is the voltage rating for this circuit breaker?

The voltage rating is 250V.

How many poles does the A21-B0-34-450-5B1-I have?

This circuit breaker has 1 pole.

What type of actuator does this circuit breaker use?

It uses a rocker actuator.

Is the A21-B0-34-450-5B1-I illuminated?

No, illumination is not available for this model.

What mounting type is supported by this circuit breaker?

It is designed for panel mounting.

What agency approvals does the A21-B0-34-450-5B1-I have?

Agency approvals include CCC, CSA, UL1077, and UL1500.

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