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A21-B0-12-450-111-E 1-pole magnetic hydraulic delay circuit breaker rated 5A at 277V. Panel mount with rocker actuator, non-illuminated.
Mfr Part #:

A21-B0-12-450-111-E

Mfr Name: Littelfuse Inc.
Littelfuse Inc.
1-pole magnetic hydraulic delay circuit breaker rated 5A at 277V. Panel mount with rocker actuator, non-illuminated.
Stock on Request

A21-B0-12-450-111-E 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
SVHC Present
Voltage Rating
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A21-B0-12-450-111-E Description

Short technical summary and product information.

The Littelfuse A21-B0-12-450-111-E is a 1-pole magnetic hydraulic delay circuit breaker designed for overcurrent protection. It is rated for 5A continuous current at 277V.

 

The magnetic hydraulic delay mechanism provides reliable overcurrent protection with a time delay to avoid nuisance tripping. The breaker features a panel mount design with a rocker actuator for easy manual operation and is non-illuminated.

 

This circuit breaker carries approvals from CCC, CSA, TUV, and UL, making it suitable for global use. It is RoHS compliant (unverified). The panel mount installation allows for straightforward integration into control panels and power distribution systems.

A21-B0-12-450-111-E Quick Information

Product Type: Circuit Breaker
Canonical Name: Littelfuse A21-B0-12-450-111-E 1-Pole 5A 277V Magnetic Hydraulic Circuit Breaker
Subcategory: Magnetic (Hydraulic Delay) Circuit Breaker

A21-B0-12-450-111-E Compliance

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

A21-B0-12-450-111-E Features

  • Rated 5A continuous current at 277V.
  • Single-pole magnetic hydraulic delay design.
  • Panel mount with rocker actuator.
  • Approved by CCC, CSA, TUV, UL.
  • Non-illuminated actuator for clear indication.

A21-B0-12-450-111-E Applications

  • Overcurrent protection for lighting circuits.
  • Branch circuit protection in panel boards.
  • Motor circuit protection up to 5 amps.
  • Suitable for control power transformer protection.

A21-B0-12-450-111-E FAQs

7 frequently asked questions generated from this part’s specifications.
What is the voltage rating?

277V

What is the mounting type?

Panel Mount

How many poles does it have?

1

What type of circuit breaker is it?

Magnetic (Hydraulic Delay)

What is the current rating?

5A

What approvals does it have?

CCC, CSA, TUV, UL

What type of actuator does it have?

Rocker

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