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MU2-B-64-612-1-A21-B-E The Littelfuse MU2-B-64-612-1-A21-B-E is a 2-pole magnetic hydraulic delay circuit breaker rated for 12A at 250V. It features a push-to-reset actuator and panel mount design.
Mfr Part #:

MU2-B-64-612-1-A21-B-E

Mfr Name: Littelfuse Inc.
Littelfuse Inc.
The Littelfuse MU2-B-64-612-1-A21-B-E is a 2-pole magnetic hydraulic delay circuit breaker rated for 12A at 250V. It features a push-to-reset actuator and panel mount design.
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MU2-B-64-612-1-A21-B-E Specifications Quick View

Most important parameters for selection – full specs in datasheet.
Category
Manufacturer Name
Actuator Type
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Breaker Type
Current Rating
Current Rating (Amps)
Illumination
Mounting Type
Number of Poles
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MU2-B-64-612-1-A21-B-E Description

Short technical summary and product information.

The MU2-B-64-612-1-A21-B-E is a 2-pole magnetic hydraulic delay circuit breaker from Littelfuse, designed for overcurrent protection in electrical systems. It is rated for 12A continuous current at 250V AC/DC. The hydraulic-magnetic trip mechanism provides stable performance across a wide temperature range, making it suitable for applications with high inrush currents or variable ambient conditions.

 

The push-to-reset actuator allows manual reset after a trip event. The circuit breaker is panel mounted and has no illumination. The 2-pole configuration enables simultaneous protection of two lines. This breaker is typically used in power distribution, industrial controls, and equipment requiring reliable circuit interruption.

MU2-B-64-612-1-A21-B-E Quick Information

Product Type: Circuit Breaker
Series: MU2
Canonical Name: MU2-B-64-612-1-A21-B-E 2-Pole Magnetic Hydraulic Delay Circuit Breaker
Subcategory: Magnetic (Hydraulic Delay) Circuit Breaker

MU2-B-64-612-1-A21-B-E Compliance

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

MU2-B-64-612-1-A21-B-E Features

  • Rated for 12A continuous current at 250V.
  • Magnetic hydraulic delay trip mechanism.
  • Two poles for simultaneous line protection.
  • Push-to-reset actuator for manual reset.
  • Panel mount enclosure design.

MU2-B-64-612-1-A21-B-E Applications

  • Used in industrial power distribution panels.
  • Protects motors and transformers from overload.
  • Suitable for equipment with high inrush currents.
  • Applied in control circuits requiring reliable interruption.

MU2-B-64-612-1-A21-B-E FAQs

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

12A.

What is the voltage rating of this circuit breaker?

250V.

What type of breaker is this?

Magnetic (Hydraulic Delay).

How many poles does this circuit breaker have?

2 poles.

What type of actuator does this breaker use?

Push to Reset.

Does this circuit breaker have illumination?

No, it has no illumination.

What is the mounting type of this circuit breaker?

Panel Mount.

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