Mfr Part #:

MU1-B-34-618-1-A21-B-C

Littelfuse MU1-B-34-618-1-A21-B-C is a 1-pole magnetic hydraulic delay circuit breaker rated at 18A and 250V. It features a panel mount design with a push-to-reset actuator.

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MU1-B-34-618-1-A21-B-C Description

Short technical summary and product information.

The Littelfuse MU1-B-34-618-1-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 interruption of fault currents.

The breaker uses a hydraulic-magnetic trip mechanism, which offers stable performance over a wide temperature range and is ideal for applications where ambient temperature varies. The push-to-reset actuator allows for easy manual reset after a trip event.

This circuit breaker is designed for panel mounting, making it suitable for integration into control panels, power distribution units, and industrial equipment. The non-illuminated actuator provides a simple, robust interface.

MU1-B-34-618-1-A21-B-C Quick Information

Product Type: Circuit Breaker

Series: MU1

Canonical Name: Littelfuse MU1-B-34-618-1-A21-B-C 18A 250V 1-Pole Magnetic Hydraulic Delay Circuit Breaker

Subcategory: Hydraulic-Magnetic Circuit Breaker

MU1-B-34-618-1-A21-B-C Compliance

RoHS Status: RoHS Compliant

Moisture Sensitivity Level (MSL): 1 Unlimited

REACH Status: REACH Unaffected

MU1-B-34-618-1-A21-B-C Features

Rated for 18A continuous current at 250V.
Single-pole magnetic hydraulic delay design.
Panel mount with push-to-reset actuator.
Non-illuminated actuator for simple operation.
RoHS3 compliant for environmental compliance.

MU1-B-34-618-1-A21-B-C Applications

Overcurrent protection in industrial control panels.
Power distribution unit circuit protection.
Protection for HVAC and refrigeration equipment.
Used in telecommunications power systems.

MU1-B-34-618-1-A21-B-C FAQs

6 frequently asked questions generated from this part’s specifications.

What is the current rating of the MU1-B-34-618-1-A21-B-C?

The current rating is 18A.

What is the voltage rating of this circuit breaker?

The voltage rating is 250V.

What type of breaker is the MU1-B-34-618-1-A21-B-C?

It is a magnetic circuit breaker with hydraulic delay.

How many poles does this circuit breaker have?

It has 1 pole.

What is the mounting type for this breaker?

It is designed for panel mounting.

What actuator type does this breaker use?

It uses a push-to-reset actuator.

MU1-B-34-618-1-A21-B-C Alternate Parts

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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.

View Part

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