MD1-B-12-630-3-A35-B-M 30A, 250V, 1-pole magnetic (hydraulic delay) circuit breaker. Panel mount with rocker actuator. CCC, CSA, UL1077 approved.
Mfr Part #:

MD1-B-12-630-3-A35-B-M

Mfr Name: Littelfuse Inc.
Littelfuse Inc.
30A, 250V, 1-pole magnetic (hydraulic delay) circuit breaker. Panel mount with rocker actuator. CCC, CSA, UL1077 approved.
Stock on Request

MD1-B-12-630-3-A35-B-M 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

MD1-B-12-630-3-A35-B-M Description

Short technical summary and product information.

The Littelfuse MD1-B-12-630-3-A35-B-M is a single-pole magnetic circuit breaker with hydraulic delay. It is rated for 30A continuous current and 250V AC/DC. The breaker uses a rocker actuator and is designed for panel mount installation. It carries approvals from CCC, CSA, and UL1077, ensuring compliance with international standards. The magnetic (hydraulic delay) mechanism provides reliable overcurrent protection with time-delay characteristics suitable for handling inrush currents. The non-illuminated rocker actuator offers manual reset capability. This breaker is ideal for use in industrial control panels, power distribution, and motor control circuits where dependable circuit protection is required.

MD1-B-12-630-3-A35-B-M Quick Information

Product Type: Circuit Breaker
Series: MD1
Canonical Name: Littelfuse MD1-B-12-630-3-A35-B-M 30A 250V Magnetic Hydraulic Delay Circuit Breaker, Panel Mount, Rocker
Subcategory: Magnetic Circuit Breaker

MD1-B-12-630-3-A35-B-M Compliance

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

MD1-B-12-630-3-A35-B-M Features

  • Rated for 30A continuous current at 250V.
  • Single-pole magnetic hydraulic delay circuit breaker.
  • Panel mount with rocker actuator.
  • Approved to UL1077, CSA, and CCC standards.
  • No illumination — non-illuminated rocker.

MD1-B-12-630-3-A35-B-M Applications

  • Used in industrial control panels for branch circuit protection.
  • Suitable for power distribution equipment requiring overcurrent protection.
  • Ideal for applications requiring time-delay to accommodate inrush currents.
  • Common in HVAC equipment and motor control systems.

MD1-B-12-630-3-A35-B-M FAQs

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

The circuit breaker is rated for 250V.

What is the current rating of this circuit breaker?

The circuit breaker is rated for 30A.

What type of breaker is this?

This is a magnetic (hydraulic delay) circuit breaker.

How many poles does this circuit breaker have?

This circuit breaker is single-pole (1 pole).

What is the mounting type for this circuit breaker?

It is designed for panel mount installation.

What actuator type does this circuit breaker have?

It has a rocker actuator.

What safety approvals does this circuit breaker hold?

It is approved to CCC, CSA, and UL1077 standards.

MD1-B-12-630-3-A35-B-M Alternate Parts

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MA1-B-24-630-2-A34-B-C
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This is a 30A, 250V, 1-pole magnetic (hydraulic delay) circuit breaker from Littelfuse. It features a rocker actuator and panel mount design.
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MB1-B-64-630-1-A34-B-C
MB1-B-64-630-1-A34-B-C
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The Littelfuse Inc. MB1-B-64-630-1-A34-B-C is a single-pole, magnetic (hydraulic delay) circuit breaker. It features a 30A current rating and a 250V voltage rating.
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ME1-B-24-630-3-A32-B-C
ME1-B-24-630-3-A32-B-C
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The Littelfuse Inc. ME1-B-24-630-3-A32-B-C is a single-pole, magnetic hydraulic delay circuit breaker. It features a 30A current rating and a 250V voltage rating.
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MD1-B-24-630-3-A45-B-C
MD1-B-24-630-3-A45-B-C
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Littelfuse MD1-B-24-630-3-A45-B-C circuit breaker, rated 30A at 250VAC, single pole, magnetic hydraulic delay type with rocker actuator and panel mount.
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