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2MM

Motor Protector/Thermal Cut-Out

Design and Operating Principles

Introduction

Applications

The motor protector 2MM consists of a metal housing that holds and

protects the inner components against infiltration as well as mechanical

deformation.

The can contains the calibrated Klixon® disc carrying a silver contact.

The fixed contact is placed on the opposite side, separated from the

terminal by an insulator. The 2MM is available in two versions: with

epoxy insulation and with additional sleeve.

The operating principle of the 2MM is both simple and effective. A

current flows through the resistive Klixon® bimetal disc. When a fault

condition occurs, the increased current and ambient temperature make

the bimetal disc snap open the contacts. The contacts close again

automatically as the device cools down to a safe running temperature.

Sensata Technologies builds the 2MM motor protector to meet almost any requirement of protection in a wide range of small motors, small transformers,

solenoids, etc.. This compact motor protector is the best solution to protect the wide variety of motors used in industrial and domestic appliances

against locked rotor and overload situations.

The 2MM operates as a sensitive safety cut-out for applications like:

· Small motors

· Coils

· Solenoid valves

· Transformers

In single phase motors it can be mounted directly in the main circuit to

serve as on- or in-winding protector. It’s compact size provides ease

of installation, even in small spaces. At this time there is practically

no small motor the 2MM cannot protect against overheating and

overloading. Sensata Technologies 2MM provides you with a cost

effective solution in terms of maximum quality and reliability.

Standard Operating Temperature Range

from 70°C - 160°C in 5K steps

Tolerance on Open Temperature

± 10K (UL type ±5, ±7)

Max. Ambient Temperature 175°C

175°C

Differential

20K minimum

SPECIFICATIONS