CK1-B0-12-640-121-D The Littelfuse Inc. CK1-B0-12-640-121-D is a single-pole, magnetic hydraulic delay circuit breaker. It features a 40A current rating and a 480V voltage rating.
Mfr Part #:

CK1-B0-12-640-121-D

Mfr Name: Littelfuse Inc.
Littelfuse Inc.
The Littelfuse Inc. CK1-B0-12-640-121-D is a single-pole, magnetic hydraulic delay circuit breaker. It features a 40A current rating and a 480V voltage rating.
Stock on Request
$ Price Range: $0.99

CK1-B0-12-640-121-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
Storage Temperature
Tape & Reel
Voltage Rating

CK1-B0-12-640-121-D Description

Short technical summary and product information.

This Littelfuse Inc. CK1-B0-12-640-121-D is a single-pole circuit breaker designed for panel mounting. It utilizes a magnetic hydraulic delay mechanism for reliable operation.

 

Key electrical specifications include a current rating of 40A and a voltage rating of 480V. The actuator type is a rocker, and it offers no illumination. Approval agencies include CCC, CSA, UL, and VDE, indicating broad compliance for various applications.

 

The breaker is specified with RoHS3 compliance and an MSL 1 rating. Its REACH status is unaffected. This component is suitable for applications requiring robust overcurrent protection with specific delay characteristics.

CK1-B0-12-640-121-D Quick Information

Product Type: Circuit Breaker
Canonical Name: Littelfuse Inc. CK1-B0-12-640-121-D Magnetic Hydraulic Delay Circuit Breaker
Subcategory: Magnetic (Hydraulic Delay)

CK1-B0-12-640-121-D Compliance

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

CK1-B0-12-640-121-D Estimated Pricing

Qty Low High
1+ $0.99 $0.99

Estimated market price range - modelled values for guidance only, not live distributor offers.

CK1-B0-12-640-121-D Features

  • 40A current rating for power circuits.
  • 480V voltage rating for industrial use.
  • Magnetic hydraulic delay for controlled tripping.
  • Panel mount design for easy integration.
  • Rocker actuator for manual operation.

CK1-B0-12-640-121-D Applications

  • Industrial control panels.
  • Power distribution systems.
  • Machinery safety circuits.
  • Equipment protection applications.

CK1-B0-12-640-121-D FAQs

7 frequently asked questions generated from this part’s specifications.
What is the current rating of the CK1-B0-12-640-121-D circuit breaker?

The current rating is 40A.

What is the voltage rating for this Littelfuse Inc. circuit breaker?

The voltage rating is 480V.

What type of breaker mechanism does the CK1-B0-12-640-121-D use?

It uses a Magnetic (Hydraulic Delay) breaker type.

How many poles does this circuit breaker have?

This circuit breaker has 1 pole.

What is the mounting type for the CK1-B0-12-640-121-D?

The mounting type is Panel Mount.

Is the CK1-B0-12-640-121-D RoHS compliant?

Yes, it is RoHS3 Compliant.

What is the Moisture Sensitivity Level (MSL) for this part?

The MSL is 1 Unlimited.

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