Application

Manual motor starters (also known as motor

protection circuit breakers or manual motor

protectors) protect the load and the installation

against short-circuits and overloads. They are

three pole protection devices with thermal tripping

elements for overload protection and electromagnetic

tripping elements for short-circuit protection.

Furthermore, they provide a disconnect function for

safe isolation of the installation and the supply, and

they can be used for manual switching of loads.

Manual motor starters have a setting scale in amperes,

which allows direct adjusting of the device without any

additional calculation.

In compliance with international and national

standards, the setting current is the rated current of the

motor and not the tripping current.