Page 742 - ABB_Motor _Protection_and_Control_catalogue_20221216

6/4 ABB MOTOR PROTECTION AND CONTROL

—

Individual motor starting solutions

Direct-On-Line Starter

A direct-on-line starter is a simple and economic solution for controlling three-phase asynchronous
motors.

You can easily assemble a direct-on-line starter by connecting an AF contactor with a TF thermal
overload relay or EF electronic overload relay. In an extended combination with a MO manual motor
starter, also a protection against short circuits can be implemented.
06

Reversing starters

This starting mode is a popular way to protect the motor during start-up and can be used with most
squirrel cage motors. Star-delta starters are ideal for machines having high starting torque such as
pumps, centrifugal compressors or wood-working machines.

You can assemble star-delta starters with any contactor thanks to our complete range of connection
sets.

Star-Delta starters

Reversing starters use two contactors to interchange the connection of two terminals. This allows to
change the direction of the motor.

Thanks to our complete range of accessories, you can easily assemble reversing starter combinations.

All starting solutions can also be realized with ABB mini contactors in combination with suitable
overload relays. This allows to create individual starting solutions in applications where space is at a
premium. (ADD T16 + M Contactor)

Technical details regarding the creation of motor starting solutions with AF contactors are shown in
chapter 12.