DB3-B0-44-640-121-D The Littelfuse Inc. DB3-B0-44-640-121-D is a 3-pole circuit breaker rated for 40A and 480V. It features a magnetic (hydraulic delay) trip mechanism and a lever actuator.
Mfr Part #:

DB3-B0-44-640-121-D

Mfr Name: Littelfuse Inc.
Littelfuse Inc.
The Littelfuse Inc. DB3-B0-44-640-121-D is a 3-pole circuit breaker rated for 40A and 480V. It features a magnetic (hydraulic delay) trip mechanism and a lever actuator.
Stock on Request
$ Price Range: $0.99

DB3-B0-44-640-121-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

DB3-B0-44-640-121-D Description

Short technical summary and product information.

This Littelfuse Inc. circuit breaker, part number DB3-B0-44-640-121-D, is designed for reliable circuit protection. It operates with a current rating of 40A and a voltage rating of 480V.

 

The breaker type is magnetic with a hydraulic delay, offering specific trip characteristics suitable for various applications. It features a 3-pole configuration and a standard lever actuator for manual operation. The unit is designed for DIN rail mounting, facilitating easy installation in control panels and enclosures.

 

Compliance information indicates RoHS3 compliance, MSL 1, and REACH unaffected status, though these are currently unverified. The approval agencies listed include CSA, VDE, and UL, suggesting broad applicability and adherence to safety standards.

DB3-B0-44-640-121-D Quick Information

Product Type: Circuit Breaker
Canonical Name: Littelfuse Inc. DB3-B0-44-640-121-D Magnetic (Hydraulic Delay) Circuit Breaker
Subcategory: Magnetic (Hydraulic Delay)

DB3-B0-44-640-121-D Compliance

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

DB3-B0-44-640-121-D Estimated Pricing

Qty Low High
1+ $0.99 $0.99

Estimated market price range - modelled values for guidance only, not live distributor offers.

DB3-B0-44-640-121-D Features

  • 40A current rating for protection.
  • 480V voltage rating.
  • Magnetic trip with hydraulic delay.
  • 3-pole configuration.
  • DIN rail mounting type.

DB3-B0-44-640-121-D Applications

  • Industrial control panels.
  • Power distribution systems.
  • Machinery safety circuits.
  • Building electrical systems.

DB3-B0-44-640-121-D FAQs

5 frequently asked questions generated from this part’s specifications.
What is the current rating of the DB3-B0-44-640-121-D circuit breaker?

The current rating is 40A.

What is the voltage rating for this circuit breaker?

The voltage rating is 480V.

What type of breaker mechanism does the DB3-B0-44-640-121-D use?

It uses a magnetic trip with a hydraulic delay.

How many poles does this circuit breaker have?

It has 3 poles.

How is the DB3-B0-44-640-121-D circuit breaker mounted?

It is designed for DIN rail mounting.

DB3-B0-44-640-121-D Alternate Parts

Same form/fit/function or matching attribute configuration across different manufacturers.
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DB3-B0-26-640-121-D
DB3-B0-26-640-121-D
Littelfuse Inc.
The Littelfuse Inc. DB3-B0-26-640-121-D is a 3-pole circuit breaker featuring a magnetic hydraulic delay mechanism. It is rated for 40A and 480V.
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DA3-B0-24-640-121-D
DA3-B0-24-640-121-D
Littelfuse Inc.
The DA3-B0-24-640-121-D is a circuit breaker manufactured by Littelfuse with a 40A current rating and 480V voltage rating.
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