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MU1-B-34-450-1-A21-B-E This is a 1-pole magnetic (hydraulic delay) circuit breaker rated for 5A at 250V. It features a push-to-reset actuator and panel mount design.
Mfr Part #:

MU1-B-34-450-1-A21-B-E

Mfr Name: Littelfuse Inc.
Littelfuse Inc.
This is a 1-pole magnetic (hydraulic delay) circuit breaker rated for 5A at 250V. It features a push-to-reset actuator and panel mount design.
Stock on Request

MU1-B-34-450-1-A21-B-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
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MU1-B-34-450-1-A21-B-E Description

Short technical summary and product information.

The Littelfuse MU1-B-34-450-1-A21-B-E is a 1-pole magnetic circuit breaker with hydraulic delay mechanism, designed for overcurrent protection. It is rated for 5A continuous current at 250V. The push-to-reset actuator allows manual reset after a trip. This breaker uses magnetic (hydraulic delay) technology, providing inverse time-delay characteristics suitable for circuits with high inrush currents.

 

Panel mounting simplifies integration into control panels and enclosures. The breaker carries agency approvals from CCC, CSA, TUV, and UL, indicating compliance with international safety standards. The MU1-B series is built for reliable operation in industrial, commercial, and marine applications where consistent overcurrent protection is required.

MU1-B-34-450-1-A21-B-E Quick Information

Product Type: Circuit Breaker
Series: MU1-B
Canonical Name: Magnetic (Hydraulic Delay) Circuit Breaker, 5A, 250V, 1 Pole, Panel Mount, Push-to-Reset
Subcategory: Magnetic Circuit Breaker

MU1-B-34-450-1-A21-B-E Compliance

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

MU1-B-34-450-1-A21-B-E Features

  • 5A continuous current rating at 250V.
  • Single-pole magnetic hydraulic delay breaker.
  • Push-to-reset actuator for manual reset.
  • Panel mount design for easy installation.
  • Approved by CCC, CSA, TUV, and UL agencies.

MU1-B-34-450-1-A21-B-E Applications

  • Overcurrent protection for electrical circuits.
  • Panel mount integration in control systems.
  • Branch circuit protection in distribution panels.
  • Motor and equipment protection from overloads.
  • Circuits requiring time-delayed tripping for inrush currents.

MU1-B-34-450-1-A21-B-E FAQs

7 frequently asked questions generated from this part’s specifications.
What is the voltage rating?

250V.

What is the current rating?

5A.

What type of circuit breaker is this?

Magnetic (Hydraulic Delay) circuit breaker.

How many poles does it have?

1 pole.

What type of actuator does it use?

Push-to-Reset actuator.

What is the mounting type?

Panel Mount.

What agency approvals does it have?

CCC, CSA, TUV, UL.

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