Mfr Part #:

MU2-B-24-621-1-B21-B-4

The Littelfuse Inc. MU2-B-24-621-1-B21-B-4 is a 2-pole circuit breaker. It features a 21A current rating and a 250V voltage rating.

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MU2-B-24-621-1-B21-B-4 Description

Short technical summary and product information.

This Littelfuse Inc. MU2-B-24-621-1-B21-B-4 is a magnetic (hydraulic delay) circuit breaker designed for panel mounting. It offers a current rating of 21A and a voltage rating of 250V.

Key specifications include a 2-pole configuration and a push-to-reset actuator type. The breaker provides reliable circuit protection in various applications.

It is RoHS3 compliant and has a Moisture Sensitivity Level (MSL) of 1 Unlimited. The REACH status is unaffected.

This component is suitable for applications requiring robust overcurrent protection with a hydraulic delay mechanism.

MU2-B-24-621-1-B21-B-4 Quick Information

Product Type: Circuit Breaker

Series: MU2

Canonical Name: Littelfuse Inc. MU2-B-24-621-1-B21-B-4 Magnetic (Hydraulic Delay) Circuit Breaker

Subcategory: Circuit Breaker

MU2-B-24-621-1-B21-B-4 Compliance

RoHS Status: RoHS Compliant

Moisture Sensitivity Level (MSL): 1 Unlimited

REACH Status: REACH Unaffected

MU2-B-24-621-1-B21-B-4 Features

21A current rating for protection.
250V voltage rating for circuits.
2-pole configuration for isolation.
Panel mount for easy installation.
Magnetic (hydraulic delay) breaker type.

MU2-B-24-621-1-B21-B-4 Applications

Industrial control panels.
Power distribution systems.
Machinery safety circuits.
Automotive applications.

MU2-B-24-621-1-B21-B-4 FAQs

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

What is the current rating of the MU2-B-24-621-1-B21-B-4 circuit breaker?

The current rating is 21A.

What is the voltage rating for this circuit breaker?

The voltage rating is 250V.

How many poles does the MU2-B-24-621-1-B21-B-4 have?

It has 2 poles.

What type of mounting is required for this circuit breaker?

It requires panel mounting.

What is the breaker type?

It is a Magnetic (Hydraulic Delay) breaker type.

Is this circuit breaker RoHS compliant?

Yes, it is RoHS3 Compliant.

What is the Moisture Sensitivity Level (MSL) for this part?

The MSL is 1 Unlimited.

MU2-B-24-621-1-B21-B-4 Alternate Parts

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MU2-B-24-621-1-A21-B-C

Littelfuse Inc.

Magnetic hydraulic circuit breaker rated for 21A at 250V. Features 2 poles and push-to-reset actuator.

View Part

MU2-B-24-621-1-B21-B-C