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CMB-203-28K5B-B-D Littelfuse CMB-203-28K5B-B-D is a 1-pole thermal circuit breaker rated for 20A at 250V. It features a push-to-reset actuator and is designed for panel mount installation.
Mfr Part #:

CMB-203-28K5B-B-D

Mfr Name: Littelfuse Inc.
Littelfuse Inc.
Littelfuse CMB-203-28K5B-B-D is a 1-pole thermal circuit breaker rated for 20A at 250V. It features a push-to-reset actuator and is designed for panel mount installation.
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CMB-203-28K5B-B-D 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
Voltage Rating
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CMB-203-28K5B-B-D Description

Short technical summary and product information.

The Littelfuse CMB-203-28K5B-B-D is a single-pole thermal circuit breaker designed for overcurrent protection in electrical circuits. It is rated for a continuous current of 20A at a voltage of 250V, making it suitable for a variety of power distribution and control applications.

 

The breaker utilizes a thermal trip mechanism, which responds to sustained overcurrent conditions by heating a bimetallic strip, causing the contacts to open. The push-to-reset actuator allows for manual reset after a trip event. This component is intended for panel mount installation, providing a secure and accessible mounting solution for equipment enclosures.

CMB-203-28K5B-B-D Quick Information

Product Type: Thermal Circuit Breaker
Canonical Name: CMB-203-28K5B-B-D Thermal Circuit Breaker, 20A, 250V, 1-Pole, Push to Reset
Subcategory: Thermal

CMB-203-28K5B-B-D Compliance

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

CMB-203-28K5B-B-D Features

  • Rated for 20A continuous current.
  • Rated for 250V AC/DC operation.
  • Single-pole thermal overcurrent protection.
  • Push-to-reset actuator for manual reset.
  • Panel mount design for secure installation.

CMB-203-28K5B-B-D Applications

  • Provides overcurrent protection in industrial control panels.
  • Ideal for protecting electrical circuits and equipment.
  • Use as resettable circuit breaker in power distribution.
  • Good for panel-mounted appliance and equipment protection.

CMB-203-28K5B-B-D FAQs

6 frequently asked questions generated from this part’s specifications.
What is the current rating of the CMB-203-28K5B-B-D?

The current rating is 20A.

What is the voltage rating of this circuit breaker?

The voltage rating is 250V.

What type of circuit breaker is the CMB-203-28K5B-B-D?

It is a thermal circuit breaker.

How many poles does this circuit breaker have?

It has 1 pole.

What type of actuator does this breaker use?

It uses a push-to-reset actuator.

What is the mounting type for this component?

It is designed for panel mount.

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