AA2-B0-24-640-521-4 The Littelfuse Inc. AA2-B0-24-640-521-4 is a 2-pole circuit breaker designed for panel mounting. It features a 40A current rating and a 277V voltage rating.
Mfr Part #:

AA2-B0-24-640-521-4

Mfr Name: Littelfuse Inc.
Littelfuse Inc.
The Littelfuse Inc. AA2-B0-24-640-521-4 is a 2-pole circuit breaker designed for panel mounting. It features a 40A current rating and a 277V voltage rating.
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AA2-B0-24-640-521-4 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
Lead Style
Mounting Type
Number of Poles
Voltage Rating

AA2-B0-24-640-521-4 Description

Short technical summary and product information.

This Littelfuse Inc. circuit breaker, part number AA2-B0-24-640-521-4, is a 2-pole device with a 40A current rating and a 277V voltage rating. It utilizes a magnetic hydraulic delay mechanism for protection.

 

The breaker is designed for panel mounting and features a lever actuator. It offers no illumination. The device is RoHS3 compliant and has an MSL of 1.

 

Key specifications include a 40A current rating and a 277V voltage rating, making it suitable for various power distribution applications. Its 2-pole configuration and panel mount design facilitate integration into electrical panels and systems.

AA2-B0-24-640-521-4 Quick Information

Product Type: Circuit Breaker
Series: AA2
Canonical Name: Littelfuse Inc. AA2-B0-24-640-521-4 Circuit Breaker

AA2-B0-24-640-521-4 Compliance

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

AA2-B0-24-640-521-4 Features

  • 40A current rating for power protection.
  • 277V voltage rating for AC applications.
  • 2-pole configuration for circuit isolation.
  • Panel mount design for easy installation.
  • Magnetic hydraulic delay for reliable tripping.

AA2-B0-24-640-521-4 Applications

  • Ideal for industrial control panel protection.
  • Used in power distribution systems.
  • Suitable for equipment overcurrent protection.
  • Applicable in commercial building electrical systems.
  • Protects motors and transformers from overloads.

AA2-B0-24-640-521-4 FAQs

7 frequently asked questions generated from this part’s specifications.
What is the current rating of the AA2-B0-24-640-521-4 circuit breaker?

40A.

What is the voltage rating of this circuit breaker?

277V.

What type of circuit breaker is the AA2-B0-24-640-521-4?

Magnetic (Hydraulic Delay) circuit breaker.

How many poles does this circuit breaker have?

2 poles.

What is the mounting type of this circuit breaker?

Panel Mount.

What safety approvals does this circuit breaker have?

CCC (China Compulsory Certification) approved.

What type of actuator does this circuit breaker use?

Lever actuator.

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