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CTB-B-B-04-B Thermal circuit breaker from Littelfuse, rated 4A at 250V. Single pole, panel mount with rocker actuator and 0.250 tab quick-connect terminals.
Mfr Part #:

CTB-B-B-04-B

Mfr Name: Littelfuse Inc.
Littelfuse Inc.
Thermal circuit breaker from Littelfuse, rated 4A at 250V. Single pole, panel mount with rocker actuator and 0.250 tab quick-connect terminals.
Stock on Request

CTB-B-B-04-B 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
Termination
Voltage Rating
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CTB-B-B-04-B Description

Short technical summary and product information.

The Littelfuse CTB-B-B-04-B is a single-pole thermal circuit breaker designed for overcurrent protection. It is rated for 4A continuous current at 250V AC/DC with an interrupting capacity of 1,000 amps. The breaker features a rocker actuator and is not illuminated. It is intended for panel mount installation and terminates with 0.250 inch quick-connect tabs. This thermal breaker is suitable for applications requiring reliable circuit protection in a compact, resettable form factor. The panel mount design allows for easy integration into control panels or equipment enclosures.

CTB-B-B-04-B Quick Information

Product Type: Circuit Breaker
Series: CTB
Canonical Name: Littelfuse CTB-B-B-04-B Thermal Circuit Breaker, 4A, 250V, 1 Pole, Panel Mount
Subcategory: Circuit Breakers

CTB-B-B-04-B Compliance

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

CTB-B-B-04-B Features

  • Rated for 4A at 250V operation.
  • Single pole thermal circuit breaker.
  • Panel mount with rocker actuator.
  • Interrupting capacity of 1,000 amps.
  • Terminates with 0.250 tab quick-connects.

CTB-B-B-04-B Applications

  • Used in power distribution panels.
  • Ideal for industrial control equipment.
  • Suitable for overcurrent protection in appliances.
  • Can be used in automotive auxiliary circuits.

CTB-B-B-04-B FAQs

7 frequently asked questions generated from this part’s specifications.
What is the voltage rating of the CTB-B-B-04-B?

250V.

What is the current rating?

4A.

How many poles does this circuit breaker have?

1 pole.

What type of circuit breaker is this?

Thermal.

What is the interrupting capacity?

1,000 amps.

What is the mounting type?

Panel Mount.

What termination type does this breaker have?

0.250 Tab (Q.C.).

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