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AA1-B0-52-640-9B1-C Littelfuse AA1-B0-52-640-9B1-C is a 40A, 277V, 1-pole magnetic hydraulic delay circuit breaker. It provides reliable overcurrent protection in electrical systems.
Mfr Part #:

AA1-B0-52-640-9B1-C

Mfr Name: Littelfuse Inc.
Littelfuse Inc.
Littelfuse AA1-B0-52-640-9B1-C is a 40A, 277V, 1-pole magnetic hydraulic delay circuit breaker. It provides reliable overcurrent protection in electrical systems.
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AA1-B0-52-640-9B1-C Specifications Quick View

Most important parameters for selection – full specs in datasheet.
Category
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Actuator Type
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Breaker Type
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Current Rating (Amps)
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Mounting Type
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AA1-B0-52-640-9B1-C Description

Short technical summary and product information.

The Littelfuse AA1-B0-52-640-9B1-C is a single-pole magnetic hydraulic delay circuit breaker rated for 40A continuous current at 277V AC. This breaker type uses a hydraulic-magnetic mechanism to provide precise overcurrent protection with time delay characteristics, making it suitable for applications with inrush currents. The 1-pole configuration allows for protection of a single phase or branch circuit. This circuit breaker is designed for use in panelboards, distribution boards, and other electrical equipment requiring reliable circuit protection.

AA1-B0-52-640-9B1-C Quick Information

Product Type: Circuit Breaker
Canonical Name: Littelfuse AA1-B0-52-640-9B1-C 40A 277V 1-Pole Magnetic Hydraulic Delay Circuit Breaker
Subcategory: Magnetic Circuit Breaker

AA1-B0-52-640-9B1-C Compliance

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

AA1-B0-52-640-9B1-C Features

  • Rated for 40A continuous current.
  • Operates at 277V AC voltage.
  • Single-pole magnetic hydraulic delay breaker.
  • Provides time-delay overcurrent protection.
  • Uses hydraulic-magnetic trip mechanism.

AA1-B0-52-640-9B1-C Applications

  • Ideal for overcurrent protection in panels.
  • Suitable for circuits with inductive loads.
  • Used in single-phase branch circuit protection.
  • Protects against sustained overloads and shorts.
  • Applicable in distribution boards and equipment.

AA1-B0-52-640-9B1-C FAQs

4 frequently asked questions generated from this part’s specifications.
What is the voltage rating of the AA1-B0-52-640-9B1-C?

277V

What is the current rating of the AA1-B0-52-640-9B1-C?

40A

What type of circuit breaker is the AA1-B0-52-640-9B1-C?

Magnetic (Hydraulic Delay)

How many poles does the AA1-B0-52-640-9B1-C have?

1 pole

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