Mfr Part #:

MS1-B-12-612-2-1CB-A-0AC

1 pole, 12A, 240V magnetic hydraulic delay circuit breaker with toggle actuator. Panel mount design for reliable overcurrent protection.

Stock on Request

MS1-B-12-612-2-1CB-A-0AC Description

Short technical summary and product information.

This Littelfuse MS1-B-12-612-2-1CB-A-0AC is a 1 pole magnetic hydraulic delay circuit breaker rated for 12A at 240V. It features a toggle actuator and is designed for panel mount installation. The magnetic hydraulic delay mechanism provides precise overcurrent protection with time delay characteristics suitable for industrial and commercial applications.

The breaker is RoHS3 compliant, REACH unaffected, and has an MSL rating of 1 (unlimited). It offers reliable circuit protection in a compact single-pole form factor. The toggle actuator allows manual reset and clear visual indication of tripped status.

Typical applications include protection of control circuits, power supplies, and branch circuits in panel boards and distribution equipment. The panel mount design simplifies installation in standard cutouts.

MS1-B-12-612-2-1CB-A-0AC Quick Information

Product Type: Circuit Breaker

Canonical Name: 1 Pole, 12A, 240V Magnetic Hydraulic Delay Circuit Breaker

Subcategory: Panel Mount Circuit Breakers

MS1-B-12-612-2-1CB-A-0AC Compliance

RoHS Status: RoHS Compliant

Moisture Sensitivity Level (MSL): 1 Unlimited

REACH Status: REACH Unaffected

MS1-B-12-612-2-1CB-A-0AC Features

Rated 12A at 240V AC/DC.
Single pole magnetic hydraulic delay breaker.
Toggle actuator for manual operation.
Panel mount design.
RoHS3 compliant and REACH unaffected.

MS1-B-12-612-2-1CB-A-0AC Applications

Overcurrent protection in industrial control panels.
Branch circuit protection in power distribution.
Protection for motors and transformers.
Panel infrastructure and subpanel isolation.
Control system circuit protection.

MS1-B-12-612-2-1CB-A-0AC FAQs

6 frequently asked questions generated from this part’s specifications.

What is the voltage rating of the MS1-B-12-612-2-1CB-A-0AC?

240V.

What is the current rating of this circuit breaker?

12A.

How many poles does the breaker have?

1 pole.

What type of breaker is this?

Magnetic (Hydraulic Delay).

What actuator type does the breaker use?

Toggle.

What is the mounting type of this circuit breaker?

Panel Mount.

Category	Circuit Breakers
Manufacturer Name	Littelfuse Inc.
Actuator Type	Toggle
Approval Agency	CCC, cURus, UL
Breaker Type	Magnetic (Hydraulic Delay)
Current Rating	12A
Current Rating (Amps)	12A
Illumination	None
Mounting Type	Panel Mount
Number of Poles	1
Voltage Rating	240V