It measures 45 mm wide by 57.5 mm high by 72 mm deep, so it fits the standard DIN-rail footprint without crowding adjacent devices. At 60 V rated value it draws 2 A, and at 230 V rated value it draws 6 A — so the coil power is non-trivial; don't assume a small PSU can feed it alongside a PLC output bank.
For AC-4 at 400 V (plugging/reversing duty), it's rated 6.5 A, so keep that in mind if your application does frequent reversing or inching. Type 2 coordination requires a gL/gG fuse of 20 A upstream; Type 1 coordination allows a 35 A fuse. If you're specifying for a UL 508A panel, the Type 2 rating is what governs the SCCR — the 20 A fuse limits the let-through energy so the contactor survives a fault without welding.
The SIRIUS family has broad cross-compatibility within the S00 frame: same rail, same terminal pitch, same auxiliary contact add-ons. If you're replacing an older 3RT1 contactor in an existing panel, this drops into the same footprint — no need to gut the whole line.
Main current circuit terminals are screw-type, accepting 2x (0.5 to 1.5 mm²), 2x (0.75 to 2.5 mm²), or max 2x (0.75 to 4 mm²) solid/stranded. AWG equivalents are 2x (20 to 16), 2x (18 to 14), or 1x 12. The terminal IP20 rating means finger-safe when wired, but the front is also IP20, so no additional cover is needed in a standard panel.