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MU1-B-34-250-1-A21-B-C The Littelfuse Inc. MU1-B-34-250-1-A21-B-C is a single-pole, magnetic hydraulic delay circuit breaker. It features a panel mount design and a push-to-reset actuator.
Mfr Part #:

MU1-B-34-250-1-A21-B-C

Mfr Name: Littelfuse Inc.
Littelfuse Inc.
The Littelfuse Inc. MU1-B-34-250-1-A21-B-C is a single-pole, magnetic hydraulic delay circuit breaker. It features a panel mount design and a push-to-reset actuator.
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MU1-B-34-250-1-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-34-250-1-A21-B-C Description

Short technical summary and product information.

This Littelfuse Inc. MU1-B-34-250-1-A21-B-C is a single-pole circuit breaker designed for panel mounting. It operates with a current rating of 500mA and a voltage rating of 250V.

 

The breaker type is magnetic with a hydraulic delay, and it features a convenient push-to-reset actuator. It is approved by CCC, CSA, and UL1077, indicating compliance with various safety standards.

 

This component is RoHS3 compliant and has a Moisture Sensitivity Level (MSL) of 1, meaning it has unlimited shelf life under typical conditions. The REACH status is unaffected.

 

Key specifications include a 500mA current rating, 250V voltage rating, and a single-pole configuration. The mounting type is panel mount, and the actuator is push-to-reset.

MU1-B-34-250-1-A21-B-C Quick Information

Product Type: Circuit Breaker
Series: MU1
Canonical Name: Littelfuse Inc. MU1-B-34-250-1-A21-B-C Circuit Breaker
Subcategory: Circuit Breaker

MU1-B-34-250-1-A21-B-C Compliance

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

MU1-B-34-250-1-A21-B-C Features

  • 500mA current rating for protection.
  • 250V voltage rating for various applications.
  • Magnetic hydraulic delay breaker type.
  • Panel mount design for easy installation.
  • Push-to-reset actuator for convenience.

MU1-B-34-250-1-A21-B-C Applications

  • Overcurrent protection for industrial controls.
  • Used in power supply circuits.
  • Protects equipment from sustained overloads.
  • Suitable for panel board applications.
  • Ideal for hydraulic delay applications.

MU1-B-34-250-1-A21-B-C FAQs

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

250V

What is the current rating?

500mA

What type of circuit breaker is it?

Magnetic (Hydraulic Delay)

How many poles does it have?

1

What is the actuator type?

Push to Reset

What is the mounting type?

Panel Mount

What approvals does this circuit breaker have?

CCC, CSA, UL1077

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