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MU1-B-34-440-1-A21-B-C The Littelfuse Inc. MU1-B-34-440-1-A21-B-C is a 1-pole magnetic circuit breaker designed for panel mounting. It features a push-to-reset actuator and a 4A current rating.
Mfr Part #:

MU1-B-34-440-1-A21-B-C

Mfr Name: Littelfuse Inc.
Littelfuse Inc.
The Littelfuse Inc. MU1-B-34-440-1-A21-B-C is a 1-pole magnetic circuit breaker designed for panel mounting. It features a push-to-reset actuator and a 4A current rating.
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MU1-B-34-440-1-A21-B-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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MU1-B-34-440-1-A21-B-C Description

Short technical summary and product information.

This Littelfuse Inc. MU1-B-34-440-1-A21-B-C is a single-pole circuit breaker with a magnetic hydraulic delay trip type. It is rated for a maximum current of 4A and a voltage of 250V.

 

The breaker is designed for panel mounting and features a convenient push-to-reset actuator. It has received approvals from CCC, CSA, and UL1077, indicating its suitability for various applications.

 

Environmental compliance includes RoHS3 compliance, MSL 1, and REACH unaffected status. The breaker does not feature illumination.

MU1-B-34-440-1-A21-B-C Quick Information

Product Type: Circuit Breaker
Series: MU1-B
Canonical Name: Littelfuse Inc. MU1-B-34-440-1-A21-B-C Circuit Breaker
Subcategory: Circuit Breaker

MU1-B-34-440-1-A21-B-C Compliance

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

MU1-B-34-440-1-A21-B-C Features

  • 4A current rating for protection.
  • 250V voltage rating.
  • Panel mount design.
  • Push-to-reset actuator.
  • CCC, CSA, UL1077 approvals.

MU1-B-34-440-1-A21-B-C Applications

  • Suitable for general purpose protection.
  • Used in control panel assemblies.
  • Integrates into equipment power entry.
  • Provides overcurrent protection.

MU1-B-34-440-1-A21-B-C FAQs

7 frequently asked questions generated from this part’s specifications.
What is the current rating of the MU1-B-34-440-1-A21-B-C?

The current rating is 4A.

What is the voltage rating of this circuit breaker?

The voltage rating is 250V.

What type of breaker is the MU1-B-34-440-1-A21-B-C?

It is a magnetic (hydraulic delay) circuit breaker.

How many poles does this circuit breaker have?

It has 1 pole.

What is the actuator type for this breaker?

The actuator type is push to reset.

What mounting type does this circuit breaker use?

It uses panel mount.

What are the approval agencies for this part?

It is approved by CCC, CSA, and UL1077.

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