At 45 mm wide, 57.5 mm high, and 72 mm deep, the S00 frame packs tightly on the rail — side-by-side mounting is permitted, so you can gang multiple contactors without derating for heat buildup, as long as the ambient stays within -25 to +60 °C during operation. Screw terminals accept 2x (0.5 to 1.5 mm²), 2x (0.75 to 2.5 mm²), or max 2x (0.75 to 4 mm²) solid/stranded copper. For AWG, that's 2x (20 to 16), 2x (18 to 14), or 1x 12. The front face carries IP20 finger-safe protection; the terminal area is also IP20, so standard panel wiring practices apply without extra shrouding.
For Type 1 coordination (contactor may need replacement after a fault), the fuse can go up to 35 A. This matters when the panel design specifies coordination class — Type 2 keeps the contactor in service after a downstream fault.