Electronic motor protection relays

The ABB motor protection circuit breakers are some that are made focusing on the protection of electric motors. They are designed so that they provides a trip curve that allows more robust against transient overcurrents possible that occasionally may occur at the time of engine start. As for the magnetic trip keeps these engines, initially it could indicate that it is similar to the rest of the circuit breakers but however, the thermal trip is produced at an intensity and longer time. 

As for the main features of these devices ABB could highlight its ability to break its tripping curve and rated current, apart from its protection against short circuits and overloads the engine and its protection against phase loss . Another positive aspect of guardamotores these is that they are adjustable, so one device incorporates what many needs two or three elements. 

These guardamotores, eliminating the need for devices such as fuses, offer the user an economic savings through the elimination of elements and also saving space in the box. In addition they comply with UL standards, which indicates that they can be safely used in installations where the motor groups.

As control for protecting a motor, it is performed through manual operation of contacts while protection against overloads the bimetal adjustable handles.