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AA1-B0-16-620-1D1-B The AA1-B0-16-620-1D1-B is a 20A, 277V single-pole magnetic hydraulic delay circuit breaker from Littelfuse. It features a lever actuator and panel mount design.
Mfr Part #:

AA1-B0-16-620-1D1-B

Mfr Name: Littelfuse Inc.
Littelfuse Inc.
The AA1-B0-16-620-1D1-B is a 20A, 277V single-pole magnetic hydraulic delay circuit breaker from Littelfuse. It features a lever actuator and panel mount design.
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AA1-B0-16-620-1D1-B 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-B0-16-620-1D1-B Description

Short technical summary and product information.

The Littelfuse AA1-B0-16-620-1D1-B is a 1-pole magnetic (hydraulic delay) circuit breaker rated for 20A continuous current at 277V. It is designed for overcurrent protection in a variety of electrical systems.

 

The breaker utilizes a hydraulic-magnetic trip mechanism that provides precise, temperature-stable protection. The lever actuator allows manual on/off control and reset. It is panel mountable for secure installation.

 

With CCC approval, this breaker meets safety standards for use in industrial and commercial applications. The non-illuminated, compact design makes it suitable for control panels and power distribution systems.

AA1-B0-16-620-1D1-B Quick Information

Product Type: Circuit Breaker
Canonical Name: AA1-B0-16-620-1D1-B 20A 1-Pole Magnetic (Hydraulic Delay) Circuit Breaker
Subcategory: Magnetic Circuit Breaker

AA1-B0-16-620-1D1-B Compliance

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

AA1-B0-16-620-1D1-B Features

  • Rated for 20A continuous current at 277V.
  • Single pole magnetic hydraulic delay design.
  • Lever actuator for manual control and reset.
  • Panel mount for secure installation.
  • CCC approved for safety compliance.

AA1-B0-16-620-1D1-B Applications

  • Overcurrent protection for industrial control panels.
  • Used in HVAC equipment power circuits.
  • Ideal for lighting distribution systems.
  • Protects machinery motor circuits.
  • Suitable for power distribution units.

AA1-B0-16-620-1D1-B FAQs

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

20A.

What is the voltage rating?

277V.

What type of breaker is it?

Magnetic (Hydraulic Delay).

How many poles does it have?

1.

What is the actuator type?

Lever.

What is the mounting type?

Panel Mount.

What approvals does it have?

CCC.

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