DA1-B0-34-480-121-D The DA1-B0-34-480-121-D is a single-pole DIN rail circuit breaker from Littelfuse Inc., rated at 8A and 277V. It utilizes a magnetic hydraulic delay trip mechanism with a manual lever actuator.
Mfr Part #:

DA1-B0-34-480-121-D

Mfr Name: Littelfuse Inc.
Littelfuse Inc.
The DA1-B0-34-480-121-D is a single-pole DIN rail circuit breaker from Littelfuse Inc., rated at 8A and 277V. It utilizes a magnetic hydraulic delay trip mechanism with a manual lever actuator.
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$ Price Range: $0.99

DA1-B0-34-480-121-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
Storage Temperature
Tape & Reel
Voltage Rating

DA1-B0-34-480-121-D Description

Short technical summary and product information.

The DA1-B0-34-480-121-D is a single-pole circuit breaker manufactured by Littelfuse Inc., designed for DIN rail mounting. Rated for 8 amperes at 277 volts, this device provides overcurrent protection using a magnetic hydraulic delay tripping mechanism. This delay characteristic allows it to withstand temporary inrush currents while reliably interrupting sustained fault conditions. The unit features a manual lever actuator for easy visual status checking and manual reset capabilities. It carries major international safety certifications including UL, CSA, and VDE approvals, ensuring compliance with global electrical standards. Designed for industrial control panels and machinery, its compact form factor facilitates efficient panel space utilization. The absence of illumination simplifies installation in applications where indicator lights are unnecessary. Engineers can rely on its robust construction for long-term performance in demanding electrical environments.

DA1-B0-34-480-121-D Quick Information

Product Type: Circuit Breaker
Series: DA1
Canonical Name: DA1-B0-34-480-121-D
Subcategory: DIN Rail Circuit Breaker

DA1-B0-34-480-121-D Compliance

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

DA1-B0-34-480-121-D Estimated Pricing

Qty Low High
1+ $0.99 $0.99

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

DA1-B0-34-480-121-D Features

  • Rated for continuous 8 ampere operation at 277 volts.
  • Magnetic hydraulic delay trip mechanism prevents nuisance tripping.
  • Single pole design mounts securely on standard DIN rails.
  • Manual lever actuator provides clear operational status indication.
  • Certified by UL, CSA, and VDE for global compliance.

DA1-B0-34-480-121-D Applications

  • Protects industrial motor control circuits from overcurrent faults.
  • Integrates into HVAC equipment control panels for safety compliance.
  • Provides branch circuit protection in commercial building infrastructure.
  • Shields sensitive automation equipment from electrical surge damage.
  • Secures power distribution networks within manufacturing facilities.

DA1-B0-34-480-121-D FAQs

5 frequently asked questions generated from this part’s specifications.
What is the current rating of the DA1-B0-34-480-121-D circuit breaker?

It is rated for 8 amperes of continuous current.

What mounting style does this circuit breaker use?

It is designed for standard DIN rail mounting.

What type of tripping mechanism does this breaker employ?

It uses a magnetic hydraulic delay mechanism for overload protection.

What is the maximum operating voltage for this component?

The breaker is rated for 277 volts.

How many poles does this circuit breaker have?

It is a single-pole device.

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