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AA1-B2-12-420-5D2-C Littelfuse AA1-B2-12-420-5D2-C is a 1-pole magnetic (hydraulic delay) circuit breaker rated at 2A and 277V. It features a lever actuator and panel mount design, approved by CCC, CSA, and UL.
Mfr Part #:

AA1-B2-12-420-5D2-C

Mfr Name: Littelfuse Inc.
Littelfuse Inc.
Littelfuse AA1-B2-12-420-5D2-C is a 1-pole magnetic (hydraulic delay) circuit breaker rated at 2A and 277V. It features a lever actuator and panel mount design, approved by CCC, CSA, and UL.
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AA1-B2-12-420-5D2-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-B2-12-420-5D2-C Description

Short technical summary and product information.

The Littelfuse AA1-B2-12-420-5D2-C is a 1-pole magnetic circuit breaker with hydraulic delay mechanism. It is rated for 2A continuous current at 277V AC. The lever actuator provides manual on/off control and reset. Panel mount design allows secure installation in enclosures. The breaker is non-illuminated and certified by CCC, CSA, and UL. It is suitable for overcurrent protection in industrial and commercial applications.

AA1-B2-12-420-5D2-C Quick Information

Product Type: Circuit Breaker
Series: AA1
Canonical Name: AA1-B2-12-420-5D2-C 1-Pole Magnetic Circuit Breaker, 2A, 277V, Panel Mount
Subcategory: Magnetic Circuit Breaker

AA1-B2-12-420-5D2-C Compliance

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

AA1-B2-12-420-5D2-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 secure installation.
  • Certified to CCC, CSA, and UL standards.

AA1-B2-12-420-5D2-C Applications

  • Overcurrent protection for lighting circuits.
  • Branch circuit protection in panelboards.
  • Motor control circuit protection.
  • Suitable for industrial control panels.
  • Protection for HVAC equipment circuits.

AA1-B2-12-420-5D2-C FAQs

7 frequently asked questions generated from this part’s specifications.
What is the current rating of this circuit breaker?

2A

What is the voltage rating of this circuit breaker?

277V

What type of breaker is it?

Magnetic (Hydraulic Delay)

How many poles does it have?

1 pole

What actuator type does it use?

Lever

How is it mounted?

Panel mount

What approvals does this circuit breaker have?

CCC, CSA, UL

AA1-B2-12-420-5D2-C Alternate Parts

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AA1-B0-20-420-1L1-C
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The Littelfuse Inc. AA1-B0-20-420-1L1-C is a single-pole, panel mount circuit breaker. It features a magnetic hydraulic delay mechanism and a 2A current rating.
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AA1-B2-20-420-1L1-C
AA1-B2-20-420-1L1-C
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The Littelfuse Inc. AA1-B2-20-420-1L1-C is a circuit breaker designed for panel mounting. It features a 2A current rating and a 277V voltage rating.
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AA1-B0-12-420-1B2-C
AA1-B0-12-420-1B2-C
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The Littelfuse Inc. AA1-B0-12-420-1B2-C is a single-pole, magnetic hydraulic delay circuit breaker. It features a panel mount design and a 2A current rating.
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AA1-B0-34-420-1B1-C
AA1-B0-34-420-1B1-C
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The Littelfuse Inc. AA1-B0-34-420-1B1-C is a panel mount circuit breaker. It features a 2A current rating and a 277V voltage rating.
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