These main contact sets are electrical replacement contacts or repair kits for Siemens 3TB series motor starter and contactors.They are packaged at 3poles(3 movable kits and 6 stationary kits plus spring clips and screws.
Here is the part number list of replacement contact kits&repair kits for 3TB series contactor:
3TY6440-0A used for Siemens 3TB44 contactor
3TY6460-0A used for Siemens 3TB46 contactor
3TY6480-0A used for Siemens 3TB48 contactor
3TY6500-0A used for Siemens 3TB50 contactor
3TY6520-0A used for Siemens 3TB52 contactor
3TY6540-0A used for Siemens 3TB54 contactor
3TY6560-0A used for Siemens 3TB56 contactor
