Semiconductor soft starter 3RW3 8.3.3.4 Combining the contactor 3RT with the electronic overload relay 3RB10 and the soft starter 3RW3 A contactor, electronic load relay and soft starter can be combined in two ways: Combination of the contactor 3RT1 with a fitted electronic overload relay 3 RB10 - connecting lead - soft starter 3RW30/31 Combination of the contactor 3RT1 - connecting lead - combination of soft starter 3RW30/31 with a fitted electronic overload relay 3RB10 3RT + 3RB10 + connect- ing lead + 3RW3 DIN rail1: 3RT + 3RB10 + connecting lead + 3RW3 electronic overload relay 3RB10 Connecting lead DIN rail 2: Soft starter 3RW30/31 Fig. 8-14:
Combination 3RT+3RB10+3RW3 Minimum clearances A minimum clearance between the contactor/overload relay combination and the soft starter and a minimum length of the connecting leads is neces- sary for thermal reasons. The following table lists the minimum clearances and minimum connecting lead lengths for the individual sizes: Tabelle 8-10: Assembly specifications for 3RT + 3RB10 + 3RW3, minimum clearances/minimum lengths Rev. 08/99 8-25 3RT 3RB10 3RW Size Minimum clearance between DIN rails 1 and 2 (center - center) in mm Minimum length of the connecting lead in mm S00 160 100 S0 200 150 S2 240 200 S3 300 250