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C51-B0-24-440-A1D-KJ The Littelfuse Inc. C51-B0-24-440-A1D-KJ is a magnetic hydraulic delay circuit breaker. It features a 4A current rating and 120V voltage rating.
Mfr Part #:

C51-B0-24-440-A1D-KJ

Mfr Name: Littelfuse Inc.
Littelfuse Inc.
The Littelfuse Inc. C51-B0-24-440-A1D-KJ is a magnetic hydraulic delay circuit breaker. It features a 4A current rating and 120V voltage rating.
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C51-B0-24-440-A1D-KJ 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
SVHC Present
Voltage Rating
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C51-B0-24-440-A1D-KJ Description

Short technical summary and product information.

This Littelfuse Inc. C51-B0-24-440-A1D-KJ is a single-pole circuit breaker designed for panel mounting. It operates with a 4A current rating and a 120V voltage rating.

 

The breaker type is magnetic with a hydraulic delay, and it features a push-to-reset actuator. It is approved by CCC, CSA, TUV, and UL489.

 

Key specifications include a 4A current rating and a 120V voltage rating. The mounting type is panel mount, and the actuator type is push to reset. It has one pole and no illumination.

 

Compliance information indicates RoHS3 compliance, MSL 1, and REACH unaffected status. This component is suitable for various protection applications requiring reliable circuit interruption.

C51-B0-24-440-A1D-KJ Quick Information

Product Type: Circuit Breaker
Series: C51
Canonical Name: Littelfuse Inc. C51-B0-24-440-A1D-KJ Circuit Breaker
Subcategory: Circuit Breaker

C51-B0-24-440-A1D-KJ Compliance

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

C51-B0-24-440-A1D-KJ Features

  • 4A current rating for circuit protection.
  • 120V voltage rating for power systems.
  • Magnetic breaker with hydraulic delay.
  • Panel mount design for easy installation.
  • Push-to-reset actuator for operation.

C51-B0-24-440-A1D-KJ Applications

  • Protects low-voltage control circuits from overcurrent.
  • Mounts securely inside industrial equipment panels.
  • Handles transient inrush currents without nuisance tripping.
  • Provides certified protection for commercial machinery.
  • Integrates into custom electrical distribution boards.

C51-B0-24-440-A1D-KJ FAQs

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

4A

How many poles does the C51-B0-24-440-A1D-KJ have?

1 pole

What type of actuator is used on this breaker?

Push to reset

Does this circuit breaker include an illumination feature?

No illumination

What safety certifications does this component hold?

CCC, CSA, TUV, UL489

What mounting method is required for installation?

Panel mount

What trip mechanism protects the circuit?

Magnetic hydraulic delay

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