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AA1-B0-14-620-291-MK This Littelfuse AA1-B0-14-620-291-MK is a 20A, 277V 1-pole magnetic hydraulic delay circuit breaker. It features a panel mount design with lever actuator.
Mfr Part #:

AA1-B0-14-620-291-MK

Mfr Name: Littelfuse Inc.
Littelfuse Inc.
This Littelfuse AA1-B0-14-620-291-MK is a 20A, 277V 1-pole magnetic hydraulic delay circuit breaker. It features a panel mount design with lever actuator.
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AA1-B0-14-620-291-MK 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-B0-14-620-291-MK Description

Short technical summary and product information.

The Littelfuse AA1-B0-14-620-291-MK is a single-pole magnetic hydraulic delay circuit breaker designed for overcurrent protection. It is rated for 20A of continuous current at 277V AC, making it suitable for a variety of electrical distribution and equipment protection applications.

 

This breaker employs a magnetic hydraulic delay mechanism that provides inverse time-delay characteristics, allowing for nuisance-free operation with inrush currents while offering reliable short-circuit protection. The panel mount design facilitates easy installation in control panels or enclosures.

 

The lever actuator provides manual On/Off control. The unit is approved by CCC, UL489A, and VDE, ensuring compliance with international safety standards. It has no illumination.

AA1-B0-14-620-291-MK Quick Information

Product Type: Circuit Breaker
Series: AA1
Canonical Name: 1-Pole 20A 277V Magnetic Hydraulic Delay Circuit Breaker

AA1-B0-14-620-291-MK Compliance

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

AA1-B0-14-620-291-MK Features

  • Rated for 20A continuous current.
  • Maximum voltage rating of 277V.
  • Single pole magnetic hydraulic delay design.
  • Panel mount with lever actuator.
  • Approved by CCC, UL489A, and VDE.

AA1-B0-14-620-291-MK Applications

  • Used for branch circuit protection in electrical panels.
  • Suitable for overcurrent protection of industrial equipment.
  • Ideal for control circuits and machinery.
  • Applicable in power distribution systems.

AA1-B0-14-620-291-MK FAQs

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

277V

What is the mounting type of this circuit breaker?

Panel Mont

What is the current rating of the AA1-B0-14-620-291-MK?

20A

How many poles does this breaker have?

1 pole

What type of actuator does this circuit breaker have?

Lever

Which approvals does the AA1-B0-14-620-291-MK hold?

CCC, UL489A, VDE

What type of circuit breaker is this?

Magnetic (Hydraulic Delay)

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