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MB1-B-12-420-2-A12-A-C 1 Pole, 2A, 250V magnetic hydraulic delay circuit breaker with rocker actuator. Panel mount, approved to CCC, CSA, and UL1077.
Mfr Part #:

MB1-B-12-420-2-A12-A-C

Mfr Name: Littelfuse Inc.
Littelfuse Inc.
1 Pole, 2A, 250V magnetic hydraulic delay circuit breaker with rocker actuator. Panel mount, approved to CCC, CSA, and UL1077.
Stock on Request

MB1-B-12-420-2-A12-A-C 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
SVHC Present
Voltage Rating
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MB1-B-12-420-2-A12-A-C Description

Short technical summary and product information.

The MB1-B-12-420-2-A12-A-C is a single-pole magnetic hydraulic delay circuit breaker from Littelfuse Inc., part of the MB1-B series. It uses a hydraulic-magnetic mechanism to provide precise overcurrent protection with time delay, suitable for applications requiring high inrush tolerance.

 

Electrical ratings include a current rating of 2A and a voltage rating of 250V. The breaker features a rocker actuator and is designed for panel mount installation.

 

Compliance includes approvals from CCC, CSA, and UL1077, making it suitable for a wide range of industrial and commercial equipment requiring reliable circuit protection.

MB1-B-12-420-2-A12-A-C Quick Information

Product Type: Circuit Breaker
Series: MB1-B
Canonical Name: Littelfuse MB1-B Series 1 Pole 2A 250V Magnetic Hydraulic Delay Rocker Circuit Breaker
Subcategory: Magnetic Hydraulic Circuit Breaker

MB1-B-12-420-2-A12-A-C Compliance

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

MB1-B-12-420-2-A12-A-C Features

  • Magnetic hydraulic delay trip mechanism.
  • Rated for 2A continuous current.
  • 250V AC/DC voltage rating.
  • Single pole design.
  • Panel mount rocker actuator.

MB1-B-12-420-2-A12-A-C Applications

  • Power supply overcurrent protection.
  • Industrial equipment branch circuit protection.
  • Panel board main breaker in control panels.
  • Motor protection with high inrush tolerance.
  • Appliance and HVAC system protection.

MB1-B-12-420-2-A12-A-C FAQs

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

2A

What is the voltage rating?

250V

How many poles does this breaker have?

1 pole

What type of breaker is this?

Magnetic (Hydraulic Delay)

What is the mounting type?

Panel Mount

What actuator type does it use?

Rocker actuator

MB1-B-12-420-2-A12-A-C Alternate Parts

Same form/fit/function or matching attribute configuration across different manufacturers.
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ME1-B-34-420-1-A12-2-C
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The Littelfuse Inc. ME1-B-34-420-1-A12-2-C is a single-pole, magnetic hydraulic delay circuit breaker. It features a 2A current rating and a 250V voltage rating.
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MD1-B-32-420-1-A33-G-C
MD1-B-32-420-1-A33-G-C
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The Littelfuse Inc. MD1-B-32-420-1-A33-G-C is a single-pole, panel mount circuit breaker. It features a magnetic hydraulic delay mechanism and a rocker actuator.
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MD1-B-34-420-1-A35-B-C
MD1-B-34-420-1-A35-B-C
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The Littelfuse Inc. MD1-B-34-420-1-A35-B-C is a magnetic (hydraulic delay) circuit breaker. It features a 2A current rating and 250V voltage rating.
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MA1-B-32-420-1-A22-B-C
MA1-B-32-420-1-A22-B-C
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The Littelfuse Inc. MA1-B-32-420-1-A22-B-C is a single-pole, panel mount circuit breaker. It features a magnetic hydraulic delay with a 2A current rating and 250V voltage rating.
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