AA1-B0-12-450-222-MK The Littelfuse Inc. AA1-B0-12-450-222-MK is a single-pole circuit breaker designed for panel mounting. It features a magnetic hydraulic delay mechanism and a 5A current rating.
Mfr Part #:

AA1-B0-12-450-222-MK

Mfr Name: Littelfuse Inc.
Littelfuse Inc.
The Littelfuse Inc. AA1-B0-12-450-222-MK is a single-pole circuit breaker designed for panel mounting. It features a magnetic hydraulic delay mechanism and a 5A current rating.
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AA1-B0-12-450-222-MK 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

AA1-B0-12-450-222-MK Description

Short technical summary and product information.

This Littelfuse Inc. circuit breaker, part number AA1-B0-12-450-222-MK, is a single-pole device with a 5A current rating and a voltage rating of 277V. It utilizes a magnetic (hydraulic delay) breaker type for reliable operation.

 

The breaker is designed for panel mounting and features a lever actuator. It has received approvals from CCC, UL489A, and VDE, indicating compliance with various safety and performance standards. The RoHS status is compliant with RoHS3, and it has a Moisture Sensitivity Level (MSL) of 1.

 

This component is suitable for applications requiring overcurrent protection with specific trip characteristics provided by its magnetic hydraulic delay mechanism. Its panel mount design facilitates integration into control panels and equipment enclosures.

AA1-B0-12-450-222-MK Quick Information

Product Type: Circuit Breaker
Canonical Name: Littelfuse Inc. AA1-B0-12-450-222-MK Circuit Breaker
Subcategory: Circuit Breaker

AA1-B0-12-450-222-MK Compliance

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

AA1-B0-12-450-222-MK Features

  • 5A current rating for protection.
  • 277V voltage rating.
  • Magnetic hydraulic delay type.
  • Panel mount design.
  • Lever actuator.

AA1-B0-12-450-222-MK Applications

  • Provides overcurrent protection.
  • Suitable for panel integration.
  • Used in electrical control systems.
  • Meets CCC, UL, and VDE standards.

AA1-B0-12-450-222-MK FAQs

7 frequently asked questions generated from this part’s specifications.
What is the current rating of the AA1-B0-12-450-222-MK circuit breaker?

The current rating is 5A.

What is the voltage rating for this circuit breaker?

The voltage rating is 277V.

What type of breaker mechanism does the AA1-B0-12-450-222-MK use?

It uses a Magnetic (Hydraulic Delay) breaker type.

How many poles does this circuit breaker have?

This is a 1-pole circuit breaker.

What is the mounting type for this circuit breaker?

The mounting type is Panel Mount.

What are the approval agencies for this circuit breaker?

Approval agencies include CCC, UL489A, and VDE.

Is this circuit breaker RoHS compliant?

Yes, it is RoHS3 Compliant.

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