Electrical variants

Special voltage and frequency
Bimetallic thermal protection (NC, NO), thermistor (PTC), platinum resistor (PT100)
Single-phase with permanent capacitor
Single-phase with centrifugal switch

Mechanical variants

Protection IP56, IP65, IP66
Special flanges and shafts
Without terminal box (loose leads)
Terminal box on side
Uni-directional bearings, locked bearings or special bearings
SPM probe (vibrations measurement)
Heaters