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CA1-B2-12-640-321-MG CA1-B2-12-640-321-MG is a 40A 480V 1-pole magnetic (hydraulic delay) circuit breaker from Littelfuse. It features a lever actuator and panel mount design.
Mfr Part #:

CA1-B2-12-640-321-MG

Mfr Name: Littelfuse Inc.
Littelfuse Inc.
CA1-B2-12-640-321-MG is a 40A 480V 1-pole magnetic (hydraulic delay) circuit breaker from Littelfuse. It features a lever actuator and panel mount design.
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CA1-B2-12-640-321-MG 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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CA1-B2-12-640-321-MG Description

Short technical summary and product information.

The CA1-B2-12-640-321-MG is a single-pole magnetic circuit breaker manufactured by Littelfuse. It is rated for 40A continuous current and 480V AC/DC, employing a hydraulic-magnetic delay mechanism for precise overcurrent protection. The breaker features a lever actuator for manual reset and is designed for panel mount installation. This model is non-illuminated and carries UL489, CSA, and CCC safety approvals. The magnetic (hydraulic delay) design provides reliable performance across a wide range of ambient temperatures without the need for derating. With its compact single-pole format, it is suitable for branch circuit protection in industrial control panels, power distribution units, and equipment requiring high current ratings.

CA1-B2-12-640-321-MG Quick Information

Product Type: Circuit Breaker
Canonical Name: CA1-B2-12-640-321-MG 40A 480V 1-Pole Magnetic (Hydraulic Delay) Circuit Breaker
Subcategory: Magnetic Circuit Breaker

CA1-B2-12-640-321-MG Compliance

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

CA1-B2-12-640-321-MG Features

  • Rated for 40A continuous current.
  • Rated for 480V AC/DC operation.
  • Single-pole magnetic hydraulic delay mechanism.
  • Lever actuator for manual reset.
  • Panel mount design with UL489, CSA, CCC approvals.

CA1-B2-12-640-321-MG Applications

  • Suited for overcurrent protection in industrial control systems.
  • Used in power distribution circuits requiring 40A rating.
  • Applicable in equipment requiring magnetic hydraulic delay characteristics.
  • Ideal for branch circuit protection in panels.

CA1-B2-12-640-321-MG FAQs

7 frequently asked questions generated from this part’s specifications.
What is the voltage rating of the CA1-B2-12-640-321-MG?

480V.

What is the current rating of the CA1-B2-12-640-321-MG?

40A.

How many poles does this circuit breaker have?

1 pole.

What type of circuit breaker is the CA1-B2-12-640-321-MG?

Magnetic (Hydraulic Delay).

What is the actuator type of this breaker?

Lever.

What is the mounting type of the CA1-B2-12-640-321-MG?

Panel Mount.

What safety approvals does the CA1-B2-12-640-321-MG have?

CCC, CSA, UL489.

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The Littelfuse Inc. CA1-B0-14-640-212-BG is a magnetic hydraulic delay circuit breaker. It features a 40A current rating and is designed for panel mounting.
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