The Siemens 3RT6023-1AR60 is a SIRIUS Size S0 power contactor with a 24 VDC coil that draws 6 A at rated voltage — that's the coil you need to match to your 24 VDC control supply, and 6 A is the inrush you budget for in the PLC output card or interposing relay. Rated for motor switching in AC-3 duty, it handles 23 kW at 400 V and 40 kW at 690 V — both at 60 °C ambient, so no derating headache in a warm cabinet. The 690 V figure means it's comfortable on 480 V systems as well, with headroom. Screw-type terminals on the main circuit accept up to 10 mm² at 60 °C, and the control circuit takes 2x 0.5–2.5 mm². That's solid for panel wire up to #8 AWG — no crimping fuss if you're landing ferruled stranded.
That's useful when you're wedging it into a crowded gland plate or retrofitting an old panel where the rail isn't perfectly level. At 45 mm wide and 97 mm deep, it's a standard S0 footprint.