AA1-B0-34-620-521-P This Littelfuse AA1-B0-34-620-521-P is a 1-pole magnetic (hydraulic delay) circuit breaker rated for 20A at 250V. It features a panel mount design with a lever actuator.
Mfr Part #:

AA1-B0-34-620-521-P

Mfr Name: Littelfuse Inc.
Littelfuse Inc.
This Littelfuse AA1-B0-34-620-521-P is a 1-pole magnetic (hydraulic delay) circuit breaker rated for 20A at 250V. It features a panel mount design with a lever actuator.
Stock on Request

AA1-B0-34-620-521-P 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-B0-34-620-521-P Description

Short technical summary and product information.

The Littelfuse AA1-B0-34-620-521-P is a single-pole magnetic circuit breaker utilizing a hydraulic delay mechanism for reliable overcurrent protection. It is rated for 20A continuous current at 250V AC/DC, making it suitable for a variety of industrial and commercial applications.

 

The breaker features a panel mount design with a lever actuator for manual reset and switching. The magnetic (hydraulic delay) trip characteristic provides time-delayed tripping, allowing for brief inrush currents without nuisance tripping while still offering robust short-circuit protection.

 

This component carries approvals from CCC, CSA, TUV, and UL, indicating compliance with major international safety standards. It is designed for use in power distribution, control panels, and equipment requiring dependable circuit protection.

AA1-B0-34-620-521-P Quick Information

Product Type: Circuit Breaker
Series: AA1
Canonical Name: AA1-B0-34-620-521-P Magnetic (Hydraulic Delay) Circuit Breaker
Subcategory: Magnetic Circuit Breaker

AA1-B0-34-620-521-P Compliance

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

AA1-B0-34-620-521-P Features

  • Rated for 20A continuous current at 250V.
  • Single-pole magnetic hydraulic delay mechanism.
  • Panel mount design with lever actuator.
  • Approved by CCC, CSA, TUV, and UL.
  • Non-illuminated actuator for simple operation.

AA1-B0-34-620-521-P Applications

  • Used in industrial control panel protection.
  • Suitable for power distribution equipment.
  • Ideal for motor branch circuit protection.
  • Applied in commercial machinery and systems.

AA1-B0-34-620-521-P FAQs

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

The current rating is 20A.

What is the voltage rating of this circuit breaker?

The voltage rating is 250V.

What type of breaker is this?

This is a magnetic (hydraulic delay) circuit breaker.

How many poles does this circuit breaker have?

It has 1 pole.

What is the mounting type for this circuit breaker?

It is a panel mount circuit breaker.

What type of actuator does this circuit breaker use?

It uses a lever actuator.

What agency approvals does this circuit breaker have?

It is approved by CCC, CSA, TUV, and UL.

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The Littelfuse Inc. BA1-B0-34-620-H22-E is a single-pole, magnetic hydraulic delay circuit breaker. It features a 20A current rating and a 250V voltage rating.
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