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MU1-B-64-613-1-C21-B-E This Littelfuse MU1-B series circuit breaker is a 1-pole, 13A magnetic (hydraulic delay) type with push-to-reset actuation. It is rated for 250V AC and 80V DC and mounts on a panel.
Mfr Part #:

MU1-B-64-613-1-C21-B-E

Mfr Name: Littelfuse Inc.
Littelfuse Inc.
This Littelfuse MU1-B series circuit breaker is a 1-pole, 13A magnetic (hydraulic delay) type with push-to-reset actuation. It is rated for 250V AC and 80V DC and mounts on a panel.
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MU1-B-64-613-1-C21-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-64-613-1-C21-B-E Description

Short technical summary and product information.

The MU1-B-64-613-1-C21-B-E is a magnetic (hydraulic delay) circuit breaker from Littelfuse Inc. It features a single pole configuration with a continuous current rating of 13A. The breaker is rated for 250V AC and 80V DC, making it suitable for both AC and DC applications. Actuation is via a push-to-reset mechanism, and the unit is designed for panel mounting.

 

The hydraulic delay characteristic provides time-delayed tripping, allowing brief inrush currents without nuisance tripping. This makes it well-suited for equipment with motors, transformers, or capacitive loads. The breaker is approved by CCC, CSA, TUV, and UL, ensuring compliance with multiple international safety standards. It has no illumination and uses a basic mechanical reset.

MU1-B-64-613-1-C21-B-E Quick Information

Product Type: Circuit Breaker
Series: MU1-B
Canonical Name: 1-Pole Magnetic (Hydraulic Delay) Circuit Breaker, 13A, 250V AC/80V DC, Push to Reset, Panel Mount
Subcategory: Magnetic Circuit Breaker

MU1-B-64-613-1-C21-B-E Compliance

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

MU1-B-64-613-1-C21-B-E Features

  • Magnetic hydraulic delay circuit breaker.
  • Rated for 13A continuous current.
  • 250V AC and 80V DC voltage rating.
  • Single pole with push-to-reset actuation.
  • Panel mount configuration.

MU1-B-64-613-1-C21-B-E Applications

  • Overcurrent protection for power distribution systems
  • Used in industrial control panels
  • Suitable for automotive electrical systems
  • Protection for DC power supplies

MU1-B-64-613-1-C21-B-E FAQs

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

250V AC and 80V DC.

How is this circuit breaker mounted?

Panel mount.

What is the current rating?

13A.

How many poles does it have?

1 pole.

What type of actuator does it use?

Push to reset.

What type of circuit breaker is it?

Magnetic (hydraulic delay).

What agency approvals does it have?

CCC, CSA, TUV, UL.

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