AA1-B0-21-620-1D1-C The Littelfuse Inc. AA1-B0-21-620-1D1-C is a 1-pole circuit breaker rated for 20A and 277V. It features a magnetic (hydraulic delay) mechanism and panel mount capability.
Mfr Part #:

AA1-B0-21-620-1D1-C

Mfr Name: Littelfuse Inc.
Littelfuse Inc.
The Littelfuse Inc. AA1-B0-21-620-1D1-C is a 1-pole circuit breaker rated for 20A and 277V. It features a magnetic (hydraulic delay) mechanism and panel mount capability.
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AA1-B0-21-620-1D1-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

AA1-B0-21-620-1D1-C Description

Short technical summary and product information.

This Littelfuse Inc. circuit breaker, part number AA1-B0-21-620-1D1-C, is designed for reliable circuit protection. It operates with a 20A current rating and a voltage rating of 277V.

 

The breaker type is magnetic with a hydraulic delay, offering specific trip characteristics. It features a simple lever actuator and a panel mount design for easy integration into control panels and equipment.

 

With one pole, this circuit breaker is suitable for single-phase applications or specific circuit isolation needs. It is approved by CCC, CSA, and UL agencies, indicating compliance with relevant safety standards. The RoHS3 status is compliant, and it has an MSL of 1, signifying unlimited shelf life under standard conditions.

AA1-B0-21-620-1D1-C Quick Information

Product Type: Circuit Breaker
Canonical Name: Littelfuse Inc. AA1-B0-21-620-1D1-C Circuit Breaker

AA1-B0-21-620-1D1-C Compliance

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

AA1-B0-21-620-1D1-C Features

  • 20A current rating for circuit protection.
  • 277V voltage rating for electrical systems.
  • Magnetic breaker with hydraulic delay.
  • Panel mount design for easy installation.
  • CCC, CSA, UL approved for safety.

AA1-B0-21-620-1D1-C Applications

  • Used in industrial control panels.
  • Suitable for power distribution systems.
  • Protects sensitive electronic equipment.
  • Ideal for single-phase circuit protection.

AA1-B0-21-620-1D1-C FAQs

6 frequently asked questions generated from this part’s specifications.
What is the voltage rating of the AA1-B0-21-620-1D1-C?

277V

What is the current rating of the AA1-B0-21-620-1D1-C?

20A

How many poles does the AA1-B0-21-620-1D1-C have?

1 pole

What type of breaker is the AA1-B0-21-620-1D1-C?

Magnetic (Hydraulic Delay)

What approvals does the AA1-B0-21-620-1D1-C have?

CCC, CSA, UL

What is the mounting type of the AA1-B0-21-620-1D1-C?

Panel mount

AA1-B0-21-620-1D1-C Alternate Parts

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AA1-B2-14-620-Q22-C
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AA1-B2-14-620-H22-C
AA1-B2-14-620-H22-C
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AA1-B2-14-620-H22-C is a single-pole magnetic hydraulic delay circuit breaker from Littelfuse. It is rated 20A at 277V with panel mount and lever actuator.
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AA1-B2-12-620-5D2-C
AA1-B2-12-620-5D2-C
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The Littelfuse Inc. AA1-B2-12-620-5D2-C is a magnetic hydraulic delay circuit breaker. It features a 20A current rating and a 277V voltage rating.
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