Motor and Thermal protection

High quality motor protection against overload and overheating.


 

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Description

The choice of a suitable protection prevents motor’s operation at unusual temperature conditions and guarantees maximum constant operation, increases the effectiveness and prolongs the term of exploitation. That’s why you need to choose only high quality equipment.
Elmark offers thermal overload relays with nominal voltage up to 690V AC;50/60 Hz. These are three pole relays designed for protection of induction motors from overload or overheat. They are mounted to contactors LT1 K/Dxx series and an operating circuit for motor control is passed through their NC contacts.
Thermomagnetic circuit breakers TM2/TM3 are designed for control and protection of induction motors from overload, overheat or short circuit. The overload motor protection is carried out by the built in the breaker thermal elements, and the short circuit protection is carried out by the magnetic elements. These magnetic elements allow the adjustment of the current leakage which is 13 times the maximum current of the thermal protection. The overload protection elements include automatic compensation for the ambient temperature changes. In combination with under voltage release the thermomagnetic breaker TM 2-Exx also provides protection of the motors from fall out of a phase from the power supply.
There are additional devices for them available too: voltage release for TM2, waterproof box for TM2 and contact blocks.

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