CLB-203-12C4A-B-A This is a Littelfuse CLB-203-12C4A-B-A thermal circuit breaker rated at 20A and 250V. It features a single-pole push-to-reset actuator and panel mount design.
Mfr Part #:

CLB-203-12C4A-B-A

Mfr Name: Littelfuse Inc.
Littelfuse Inc.
This is a Littelfuse CLB-203-12C4A-B-A thermal circuit breaker rated at 20A and 250V. It features a single-pole push-to-reset actuator and panel mount design.
Stock on Request

CLB-203-12C4A-B-A 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

CLB-203-12C4A-B-A Description

Short technical summary and product information.

The Littelfuse CLB-203-12C4A-B-A is a thermal circuit breaker designed for overcurrent protection. It is rated for 20A continuous current at 250V AC. The breaker features a single-pole, push-to-reset actuator mechanism, making it suitable for manual reset applications. It is panel mounted and has no illumination. The device is approved by CE, cUL, TUV, UL1077, and UL1500, indicating compliance with international safety standards. It is also RoHS3 compliant, with MSL 1 and REACH unaffected. This circuit breaker is commonly used in industrial equipment, power distribution, and automotive applications where reliable overcurrent protection is required.

CLB-203-12C4A-B-A Quick Information

Product Type: Thermal Circuit Breaker
Series: CLB-203
Canonical Name: Thermal Circuit Breaker, 20A, 250V, 1 Pole, Push to Reset, Panel Mount
Subcategory: Circuit Breakers

CLB-203-12C4A-B-A Compliance

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

CLB-203-12C4A-B-A Features

  • Rated for 20A continuous current.
  • Operates at 250V AC supply.
  • Single-pole thermal circuit breaker.
  • Push-to-reset actuator mechanism.
  • Panel mount installation type.

CLB-203-12C4A-B-A Applications

  • Ideal for marine equipment overload protection.
  • Suitable for RV and caravan power systems.
  • Used in industrial control panel circuits.
  • Applicable for power supply output protection.

CLB-203-12C4A-B-A FAQs

7 frequently asked questions generated from this part’s specifications.
What is the voltage rating of the CLB-203-12C4A-B-A?

250V.

What is the current rating?

20A.

What type of circuit breaker is it?

Thermal.

How many poles does it have?

1 pole.

What is the actuator type?

Push to Reset.

What is the mounting type?

Panel Mount.

What approvals does it have?

CE, cUL, TUV, UL1077, UL1500.

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CMB-203-27G3N-W-A
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Littelfuse CMB-203-27G3N-W-A is a 1-pole thermal circuit breaker rated for 20A at 250V. It features a push-to-reset actuator and panel mount design.
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The Littelfuse CMB-202-12HNN-B-A is a thermal circuit breaker designed for panel mounting. It features a 20A current rating and a 250V voltage rating.
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