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AA1-B0-34-420-5B1-C AA1-B0-34-420-5B1-C is a 1-pole magnetic (hydraulic delay) circuit breaker rated for 2A at 277V. It features a lever actuator and panel mount design.
Mfr Part #:

AA1-B0-34-420-5B1-C

Mfr Name: Littelfuse Inc.
Littelfuse Inc.
AA1-B0-34-420-5B1-C is a 1-pole magnetic (hydraulic delay) circuit breaker rated for 2A at 277V. It features a lever actuator and panel mount design.
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AA1-B0-34-420-5B1-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-B0-34-420-5B1-C Description

Short technical summary and product information.

This single-pole magnetic (hydraulic delay) circuit breaker from Littelfuse Inc. is designed for overcurrent protection. It is rated for 2A continuous current at 277V. The magnetic hydraulic delay mechanism provides time-delay characteristics to handle inrush currents without nuisance tripping.

 

The breaker features a lever actuator for manual reset and panel mount installation. It holds approvals from CCC, CSA, and UL, indicating compliance with international standards for safety and performance.

 

The hydraulic delay design offers reliable protection against short circuits and overloads, making it suitable for industrial control panels, power distribution systems, and equipment protection applications.

AA1-B0-34-420-5B1-C Quick Information

Product Type: Circuit Breaker
Canonical Name: 1-Pole Magnetic (Hydraulic Delay) Circuit Breaker, 2A, 277V, Panel Mount, Lever Actuator
Subcategory: Magnetic (Hydraulic Delay) Circuit Breaker

AA1-B0-34-420-5B1-C Compliance

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

AA1-B0-34-420-5B1-C Features

  • Rated for 2A continuous current at 277V.
  • Single-pole magnetic hydraulic delay breaker.
  • Lever actuator for manual reset operation.
  • Panel mount design for easy installation.
  • Approved by CCC, CSA, and UL agencies.

AA1-B0-34-420-5B1-C Applications

  • Protects equipment from overcurrent and short circuits.
  • Ideal for industrial control panel applications.
  • Used in power distribution and protection systems.
  • Suitable for commercial and residential branch circuits.

AA1-B0-34-420-5B1-C FAQs

6 frequently asked questions generated from this part’s specifications.
What is the voltage rating of the AA1-B0-34-420-5B1-C circuit breaker?

277V.

What is the current rating of this circuit breaker?

2A.

How many poles does this circuit breaker have?

1 pole.

What type of actuator does this breaker use?

Lever actuator.

What is the mounting type for this circuit breaker?

Panel mount.

What approvals does this circuit breaker have?

CCC, CSA, and UL.

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CIRCUIT BREAKER
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