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AA1-B0-16-620-5D1-B Littelfuse AA1-B0-16-620-5D1-B is a 20A, 277V, 1-pole magnetic (hydraulic delay) circuit breaker with panel mount. It features a lever actuator and is RoHS3 compliant.
Mfr Part #:

AA1-B0-16-620-5D1-B

Mfr Name: Littelfuse Inc.
Littelfuse Inc.
Littelfuse AA1-B0-16-620-5D1-B is a 20A, 277V, 1-pole magnetic (hydraulic delay) circuit breaker with panel mount. It features a lever actuator and is RoHS3 compliant.
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AA1-B0-16-620-5D1-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-B0-16-620-5D1-B Description

Short technical summary and product information.

The Littelfuse AA1-B0-16-620-5D1-B is a magnetic hydraulic delay circuit breaker designed for overcurrent protection in various applications. This 1-pole breaker is rated for 20A continuous current at 277V AC, making it suitable for branch circuit protection in industrial and commercial systems.

 

The hydraulic-magnetic trip mechanism provides time-delay characteristics that allow brief inrush currents without nuisance tripping, while maintaining consistent performance across a wide temperature range. The panel mount design and lever actuator offer easy installation and manual control.

 

This breaker is CCC approved and RoHS3 compliant. With its robust construction and reliable trip curve, the AA1-B0-16-620-5D1-B is a dependable choice for circuit protection in control panels, HVAC equipment, and power distribution units.

AA1-B0-16-620-5D1-B Quick Information

Product Type: Circuit Breaker
Canonical Name: Littelfuse AA1-B0-16-620-5D1-B Magnetic (Hydraulic Delay) Circuit Breaker, 20A, 277V, 1 Pole, Panel Mount
Subcategory: Magnetic (Hydraulic Delay)

AA1-B0-16-620-5D1-B Compliance

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

AA1-B0-16-620-5D1-B Features

  • 20A current rating for overcurrent protection.
  • 277V voltage rating for AC applications.
  • Magnetic hydraulic delay trip mechanism.
  • Panel mount design with lever actuator.
  • 1-pole single phase configuration.

AA1-B0-16-620-5D1-B Applications

  • Used in industrial control panels.
  • Suitable for HVAC equipment protection.
  • Ideal for power distribution units.
  • Applicable in motor branch circuits.

AA1-B0-16-620-5D1-B FAQs

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

20 A

What is the voltage rating?

277 V

How many poles does it have?

1 pole

What type of circuit breaker is this?

Magnetic (Hydraulic Delay)

What is the mounting type?

Panel Mount

What is the actuator type?

Lever

What approvals does it have?

CCC

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