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MU2-B-30-440-1-A21-B-E This Littelfuse MU2-B-30-440-1-A21-B-E is a 4A, 250V, 2-pole magnetic hydraulic delay circuit breaker with a push-to-reset actuator. It is panel mount and RoHS compliant.
Mfr Part #:

MU2-B-30-440-1-A21-B-E

Mfr Name: Littelfuse Inc.
Littelfuse Inc.
This Littelfuse MU2-B-30-440-1-A21-B-E is a 4A, 250V, 2-pole magnetic hydraulic delay circuit breaker with a push-to-reset actuator. It is panel mount and RoHS compliant.
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MU2-B-30-440-1-A21-B-E 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
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MU2-B-30-440-1-A21-B-E Description

Short technical summary and product information.

The Littelfuse MU2-B-30-440-1-A21-B-E is a 4A, 250V, 2-pole magnetic hydraulic delay circuit breaker designed for overcurrent protection. Its magnetic hydraulic delay mechanism provides time-delayed tripping, making it suitable for circuits with high inrush currents such as motors and transformers. The push-to-reset actuator allows for manual reset after a trip event. This circuit breaker is panel mounted, facilitating easy installation in control panels and distribution boxes. It holds approvals from CCC, CSA, TUV, and UL, ensuring compliance with international safety standards. The unit is RoHS compliant and has an MSL of 1 (unlimited) with REACH unaffected status. With its robust design, this breaker offers reliable protection for a variety of industrial and commercial applications.

MU2-B-30-440-1-A21-B-E Quick Information

Product Type: Circuit Breaker
Series: MU2
Canonical Name: MU2-B-30-440-1-A21-B-E Magnetic Hydraulic Delay Circuit Breaker
Subcategory: Magnetic Hydraulic Delay Circuit Breaker

MU2-B-30-440-1-A21-B-E Compliance

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

MU2-B-30-440-1-A21-B-E Features

  • 4A rated current for overcurrent protection.
  • 250V voltage rating for AC/DC circuits.
  • 2-pole design for multi-phase protection.
  • Magnetic hydraulic delay mechanism for inrush tolerance.
  • Push-to-reset actuator for manual reset.

MU2-B-30-440-1-A21-B-E Applications

  • Overcurrent protection for industrial control panels.
  • Motor circuit protection in machinery.
  • Branch circuit protection in power distribution.
  • Protection for power supply units in equipment.

MU2-B-30-440-1-A21-B-E FAQs

7 frequently asked questions generated from this part’s specifications.
What is the voltage rating of the MU2-B-30-440-1-A21-B-E?

250V

What is the mounting type for this circuit breaker?

Panel Mount

What is the current rating of this circuit breaker?

4A

How many poles does this circuit breaker have?

2

What type of circuit breaker is this?

Magnetic (Hydraulic Delay)

What actuator type does this circuit breaker use?

Push to Reset

What approvals does this circuit breaker have?

CCC, CSA, TUV, UL

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