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AA1-B0-21-450-1B1-C The Littelfuse Inc. AA1-B0-21-450-1B1-C is a 1-pole circuit breaker designed for panel mounting. It features a magnetic hydraulic delay mechanism.
Mfr Part #:

AA1-B0-21-450-1B1-C

Mfr Name: Littelfuse Inc.
Littelfuse Inc.
The Littelfuse Inc. AA1-B0-21-450-1B1-C is a 1-pole circuit breaker designed for panel mounting. It features a magnetic hydraulic delay mechanism.
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AA1-B0-21-450-1B1-C 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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AA1-B0-21-450-1B1-C Description

Short technical summary and product information.

This Littelfuse Inc. circuit breaker, part number AA1-B0-21-450-1B1-C, is a single-pole device rated for 5A current and 277V AC voltage. It utilizes a magnetic (hydraulic delay) tripping mechanism for reliable protection.

 

The breaker is designed for panel mounting and features a lever actuator for easy operation. It is approved by CCC, CSA, and UL agencies, indicating compliance with various safety standards.

 

Environmental compliance includes RoHS3 compliance and MSL 1 rating. The REACH status is unaffected. This component is suitable for applications requiring robust circuit protection with a clear indication of its operational status.

AA1-B0-21-450-1B1-C Quick Information

Product Type: Circuit Breaker
Series: AA1-B0
Canonical Name: Littelfuse Inc. AA1-B0-21-450-1B1-C Circuit Breaker
Subcategory: Circuit Breaker

AA1-B0-21-450-1B1-C Compliance

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

AA1-B0-21-450-1B1-C Features

  • 5A current rating and 277V voltage rating.
  • Magnetic (hydraulic delay) breaker type.
  • Single pole, lever actuator design.
  • Panel mountable for easy integration.
  • CCC, CSA, and UL approval.

AA1-B0-21-450-1B1-C Applications

  • Provides overcurrent protection.
  • Suitable for industrial control panels.
  • Used in power distribution systems.
  • Applicable in equipment requiring safety interlocks.

AA1-B0-21-450-1B1-C FAQs

7 frequently asked questions generated from this part’s specifications.
What is the voltage rating of the AA1-B0-21-450-1B1-C?

277V.

What is the current rating of the AA1-B0-21-450-1B1-C?

5A.

What type of circuit breaker is this?

Magnetic (Hydraulic Delay).

How many poles does it have?

1.

What is the actuator type?

Lever.

What approvals does this circuit breaker have?

CCC, CSA, UL.

What is the mounting type?

Panel Mount.

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