DOL Air Break Motor Starter

Contactors

The contactor in the starter is designed for exceptional endurance. The coil is tropicalised and subjected to rigorous tests for countinuity, pick-up and drop-off. It also acts as an undervoltage release, disconnecting the supply to the motor when the voltage is low. Each starter or contactor can be fitted with two auxiliary contact blocks of 1no+1nc each for indicating lamps, sequence interlocks and other pilot circuits.

Thermal overload relay

The thermal overload relay in a motor starter protects the motor against overloads and resulting burnouts. The pe-1 relay can be manually reset by just pressing the stop button. The relays are ambient temperature compensated for operation between minus 5 degree ’c and 60 degree c.
You can select from a wide range of relays with easily adjustable current settings. All overload relays are individually tested on an automated test bench to ensure full-proof operation.

Push button

The ‘start-stop’push buttons are designed for convenient operation. The stop push can be latched in the off position to prevent accidental starting.