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MU1-B-20-620-1-A21-B-C The Littelfuse Inc. MU1-B-20-620-1-A21-B-C is a single-pole, magnetic hydraulic delay circuit breaker. It features a 20A current rating and a 250V voltage rating.
Mfr Part #:

MU1-B-20-620-1-A21-B-C

Mfr Name: Littelfuse Inc.
Littelfuse Inc.
The Littelfuse Inc. MU1-B-20-620-1-A21-B-C is a single-pole, magnetic hydraulic delay circuit breaker. It features a 20A current rating and a 250V voltage rating.
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MU1-B-20-620-1-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-20-620-1-A21-B-C Description

Short technical summary and product information.

This Littelfuse Inc. MU1-B-20-620-1-A21-B-C is a single-pole circuit breaker designed for panel mounting. It operates with a magnetic hydraulic delay mechanism, providing reliable overcurrent protection.

 

The breaker has a current rating of 20 Amps and a voltage rating of 250 Volts. It features a push-to-reset actuator for easy operation and is approved by CCC, CSA, and UL1077.

 

Key specifications include a 20A current capacity and 250V voltage handling. The mounting type is panel mount, and the actuator is a push-to-reset button. Illumination is not available on this model.

MU1-B-20-620-1-A21-B-C Quick Information

Product Type: Circuit Breaker
Series: MU1-B
Canonical Name: Littelfuse Inc. MU1-B-20-620-1-A21-B-C Circuit Breaker
Subcategory: Circuit Breaker

MU1-B-20-620-1-A21-B-C Compliance

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

MU1-B-20-620-1-A21-B-C Features

  • 20A current rating for protection.
  • 250V voltage rating for circuits.
  • Panel mount design for installation.
  • Push-to-reset actuator for operation.
  • Magnetic hydraulic delay breaker type.

MU1-B-20-620-1-A21-B-C Applications

  • Ideal for power distribution in industrial equipment.
  • Used in telecommunications power systems.
  • Suitable for control panel overcurrent protection.
  • Protects against sustained overloads and short circuits.

MU1-B-20-620-1-A21-B-C FAQs

7 frequently asked questions generated from this part’s specifications.
What is the current rating of the MU1-B-20-620-1-A21-B-C?

20A.

What is the voltage rating of the MU1-B-20-620-1-A21-B-C?

250V.

What type of circuit breaker is the MU1-B-20-620-1-A21-B-C?

Magnetic (Hydraulic Delay).

How many poles does the MU1-B-20-620-1-A21-B-C have?

1 pole.

What is the actuator type of the MU1-B-20-620-1-A21-B-C?

Push to Reset.

What is the mounting type of the MU1-B-20-620-1-A21-B-C?

Panel Mount.

What approvals does the MU1-B-20-620-1-A21-B-C have?

CCC, CSA, UL1077.

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