MU2-B-64-620-1-A21-B-C Littelfuse MU2-B-64-620-1-A21-B-C is a 20A, 250V, 2-pole magnetic (hydraulic delay) circuit breaker. It features a push-to-reset actuator and panel mount design.
Mfr Part #:

MU2-B-64-620-1-A21-B-C

Mfr Name: Littelfuse Inc.
Littelfuse Inc.
Littelfuse MU2-B-64-620-1-A21-B-C is a 20A, 250V, 2-pole magnetic (hydraulic delay) circuit breaker. It features a push-to-reset actuator and panel mount design.
Stock on Request

MU2-B-64-620-1-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

MU2-B-64-620-1-A21-B-C Description

Short technical summary and product information.

The Littelfuse MU2-B-64-620-1-A21-B-C is a magnetic circuit breaker with hydraulic delay, providing overcurrent protection in electrical circuits. It is rated for 20A of continuous current at 250V AC/DC. This 2-pole breaker offers independent protection for two circuits or a single circuit with both poles switched. The magnetic trip mechanism provides fast response to high overcurrents while the hydraulic delay allows for momentary inrush currents without nuisance tripping. The actuator is a push-to-reset type, which requires manual reset after a trip event. The breaker is designed for panel mount installation, suitable for use in control panels, industrial equipment, and power distribution systems. It does not include illumination.

MU2-B-64-620-1-A21-B-C Quick Information

Series: MU2
Subcategory: Magnetic Circuit Breaker

MU2-B-64-620-1-A21-B-C Compliance

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

MU2-B-64-620-1-A21-B-C Features

  • Rated for 20A continuous current at 250V.
  • Two-pole configuration for independent circuit protection.
  • Magnetic hydraulic delay mechanism for inrush tolerance.
  • Push-to-reset actuator requires manual reset.
  • Panel mount design for easy installation.

MU2-B-64-620-1-A21-B-C Applications

  • Used in industrial control panels for overcurrent protection.
  • Ideal for power distribution systems requiring 2-pole protection.
  • Suitable for equipment with moderate inrush currents.
  • Applications where manual reset after trip is acceptable.

MU2-B-64-620-1-A21-B-C FAQs

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

250V.

What is the current rating?

20A.

What type of circuit breaker is it?

Magnetic (Hydraulic Delay).

How many poles does it have?

2.

What is the actuator type?

Push to Reset.

What is the mounting type?

Panel Mount.

Does it have illumination?

No, it has no illumination.

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