Bosch Rexroth MSK030B-0900-NN Project Planning Manual page 189

DOK-MOTOR*-MSK********-PR12-EN-P
Synchronous Servomotors MSK
Connection 3-phase
Protection by motor protection
RLS0782 Clamping range cable gland 7 ... 10 mm
Fig. 7-4: 3-phase fan connection with protective switch
The fan units are connected via adjustable motor protection devices.
switch
The operating principle of the motor protection switches is based on the fact
that the bimetal release through which the motor current flows is heated fast‐
er than the motor winding and disconnects it from the mains before critical
temperature values are reached.
The motor protection switches are set to the rated current of the fan unit.
When selecting the motor protection switches, make sure that the setting
range matches the rated current of the fan unit.
Bosch Rexroth AG 187/279
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