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BA1-B2-12-620-521-D The Littelfuse Inc. BA1-B2-12-620-521-D is a single-pole, magnetic hydraulic delay circuit breaker. It features a 20A current rating and a 277V voltage rating.
Mfr Part #:

BA1-B2-12-620-521-D

Mfr Name: Littelfuse Inc.
Littelfuse Inc.
The Littelfuse Inc. BA1-B2-12-620-521-D is a single-pole, magnetic hydraulic delay circuit breaker. It features a 20A current rating and a 277V voltage rating.
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BA1-B2-12-620-521-D 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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BA1-B2-12-620-521-D Description

Short technical summary and product information.

This Littelfuse Inc. BA1-B2-12-620-521-D is a single-pole circuit breaker designed for panel mounting. It utilizes a magnetic hydraulic delay mechanism for reliable operation.

 

The breaker has a current rating of 20A and a voltage rating of 277V, making it suitable for various electrical protection applications. It features a lever actuator for easy operation and is approved by CCC, CSA, UL, and VDE.

 

Key specifications include a 1-pole configuration and a magnetic (hydraulic delay) breaker type. The mounting type is panel mount, and the actuator type is a lever. It is RoHS3 compliant and has a Moisture Sensitivity Level (MSL) of 1 Unlimited.

BA1-B2-12-620-521-D Quick Information

Product Type: Circuit Breaker
Canonical Name: Littelfuse Inc. BA1-B2-12-620-521-D Circuit Breaker
Subcategory: Circuit Breaker

BA1-B2-12-620-521-D Compliance

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

BA1-B2-12-620-521-D Features

  • 20A current rating for protection.
  • 277V voltage rating.
  • Single-pole magnetic hydraulic delay.
  • Panel mount with lever actuator.
  • CCC, CSA, UL, VDE approved.

BA1-B2-12-620-521-D Applications

  • Branch circuit protection for 277V lighting.
  • Overcurrent protection for HVAC equipment.
  • Panel mount breaker for industrial control panels.
  • Magnetic hydraulic delay for motor inrush tolerance.
  • UL/CSA rated for commercial branch circuits.

BA1-B2-12-620-521-D FAQs

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

The voltage rating is 277V.

What is the current rating?

The current rating is 20A.

What type of breaker is this?

Magnetic (Hydraulic Delay).

How many poles does it have?

1 pole.

What actuator type does it use?

Lever.

What is the mounting type?

Panel mount.

What approvals does it carry?

CCC, CSA, UL, and VDE.

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