MU1-B-32-618-1-A21-B-C This Littelfuse MU1-B-32-618-1-A21-B-C is a 1-pole magnetic (hydraulic delay) circuit breaker rated for 18A at 250V. It features a push-to-reset actuator and panel mount design.
Mfr Part #:

MU1-B-32-618-1-A21-B-C

Mfr Name: Littelfuse Inc.
Littelfuse Inc.
This Littelfuse MU1-B-32-618-1-A21-B-C is a 1-pole magnetic (hydraulic delay) circuit breaker rated for 18A at 250V. It features a push-to-reset actuator and panel mount design.
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MU1-B-32-618-1-A21-B-C Specifications Quick View

Most important parameters for selection – full specs in datasheet.
Category
Manufacturer Name
AEC Qualified
Actuator Type
Approval Agency
Automotive Grade
Breaker Type
Current Rating
Current Rating (Amps)
Halogen Free
Illumination
Industrial Grade
Medical Grade
Military Grade
Mounting Type
Number of Poles
SVHC Present
Voltage Rating

MU1-B-32-618-1-A21-B-C Description

Short technical summary and product information.

The Littelfuse MU1-B-32-618-1-A21-B-C is a single-pole magnetic circuit breaker with hydraulic delay, designed for overcurrent protection in a variety of applications. It is rated for 18A continuous current at 250V AC/DC, providing reliable circuit interruption under fault conditions.

 

The breaker uses a magnetic (hydraulic delay) trip mechanism, which offers precise and repeatable overcurrent protection while withstanding temporary inrush currents without nuisance tripping. The push-to-reset actuator allows for manual reset after a trip event.

 

This component is panel mounted, making it suitable for integration into control panels, power distribution units, and industrial equipment. It carries approvals from CCC, CSA, and UL1077, indicating compliance with recognized safety standards.

MU1-B-32-618-1-A21-B-C Quick Information

Product Type: Circuit Breaker
Series: MU1
Canonical Name: Littelfuse MU1-B-32-618-1-A21-B-C Magnetic (Hydraulic Delay) Circuit Breaker
Subcategory: Magnetic Circuit Breaker

MU1-B-32-618-1-A21-B-C Compliance

RoHS Status: RoHS Compliant
Moisture Sensitivity Level (MSL): 1 Unlimited
REACH Status: REACH Unaffected
Lead Free: No

MU1-B-32-618-1-A21-B-C Features

  • Single-pole magnetic hydraulic delay circuit breaker.
  • Rated for 18A continuous current at 250V.
  • Push-to-reset actuator for manual reset.
  • Panel mount design for easy installation.
  • Approved by CCC, CSA, and UL1077.

MU1-B-32-618-1-A21-B-C Applications

  • Overcurrent protection in industrial control panels.
  • Power distribution unit circuit protection.
  • Protection for motors and transformers.
  • Use in HVAC and refrigeration equipment.

MU1-B-32-618-1-A21-B-C FAQs

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

The current rating is 18A.

What is the voltage rating of this circuit breaker?

The voltage rating is 250V.

What type of circuit breaker is this?

This is a magnetic (hydraulic delay) circuit breaker.

How many poles does this circuit breaker have?

This circuit breaker has 1 pole.

What type of actuator does this circuit breaker use?

It uses a push-to-reset actuator.

What mounting type does this circuit breaker have?

It is designed for panel mount.

What agency approvals does this circuit breaker have?

It is approved by CCC, CSA, and UL1077.

MU1-B-32-618-1-A21-B-C Alternate Parts

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MU1-B-32-618-1-B21-B-C
MU1-B-32-618-1-B21-B-C
Littelfuse Inc.
The Littelfuse Inc. MU1-B-32-618-1-B21-B-C is a 1-pole circuit breaker rated for 18A and 250V. It features a magnetic hydraulic delay and a push-to-reset actuator.
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