AA1-B0-12-440-1T2-D The Littelfuse Inc. AA1-B0-12-440-1T2-D is a 1-pole magnetic circuit breaker. It features a 4A current rating and a 277V voltage rating.
Mfr Part #:

AA1-B0-12-440-1T2-D

Mfr Name: Littelfuse Inc.
Littelfuse Inc.
The Littelfuse Inc. AA1-B0-12-440-1T2-D is a 1-pole magnetic circuit breaker. It features a 4A current rating and a 277V voltage rating.
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AA1-B0-12-440-1T2-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
Voltage Rating

AA1-B0-12-440-1T2-D Description

Short technical summary and product information.

This Littelfuse Inc. circuit breaker, part number AA1-B0-12-440-1T2-D, is designed for circuit protection applications. It is a 1-pole breaker with a magnetic (hydraulic delay) tripping mechanism.

 

The breaker has a current rating of 4A and a voltage rating of 277V. It is approved by multiple agencies including CCC, CSA, UL, and VDE. The actuator type is a lever, and it features a panel mount design for easy installation.

 

Environmental compliance includes RoHS3 compliance and an MSL rating of 1. The REACH status is unaffected. This component is suitable for various industrial and commercial applications requiring reliable overcurrent protection.

AA1-B0-12-440-1T2-D Quick Information

Product Type: Circuit Breaker
Canonical Name: Littelfuse Inc. AA1-B0-12-440-1T2-D Circuit Breaker
Subcategory: Circuit Breaker

AA1-B0-12-440-1T2-D Compliance

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

AA1-B0-12-440-1T2-D Features

  • 1-pole magnetic hydraulic delay breaker.
  • Rated for 4A current.
  • Operates at 277V.
  • Panel mount design.
  • Approved by CCC, CSA, UL, VDE.

AA1-B0-12-440-1T2-D Applications

  • Industrial control panels.
  • Power distribution systems.
  • Equipment protection.
  • Automation systems.

AA1-B0-12-440-1T2-D FAQs

7 frequently asked questions generated from this part’s specifications.
What is the current rating of the AA1-B0-12-440-1T2-D circuit breaker?

The current rating is 4A.

What is the voltage rating for this circuit breaker?

The voltage rating is 277V.

How is the AA1-B0-12-440-1T2-D circuit breaker mounted?

It is a panel mount type.

What type of breaker is the AA1-B0-12-440-1T2-D?

It is a magnetic (hydraulic delay) breaker.

What agencies have approved this circuit breaker?

It is approved by CCC, CSA, UL, and VDE.

What is the RoHS status of this component?

It is RoHS3 Compliant.

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

The MSL is 1 Unlimited.

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The Littelfuse Inc. BA1-B2-14-440-C22-D is a single-pole, magnetic hydraulic delay circuit breaker. It features a 4A current rating and a 277V voltage rating.
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