Size S00 frame — 45 mm on the rail
The 3RT2018-1AV61-0UA0: This SIRIUS contactor fits the size S00 frame, which means it occupies 45 mm of DIN rail width — a tight slot for a 20-12 A rated main contact set. Depth is 73 mm, height 58 mm — that leaves clearance for wiring ducts and adjacent components in a crowded enclosure.
The coil connection uses screw-type terminals — no push-in here, so you'll need a torque screwdriver for the terminal screws.
Switching capacity — 20-12 A main contacts, auxiliary present
The main contact range is rated 20-12 A — that's the continuous current envelope for AC-3 motor switching duty. An auxiliary switch is built in, saving the cost and rail space of a separate auxiliary contact block for basic feedback or interlocking.
Mechanical endurance is 30 million cycles typical — that's a long service life for a contactor that cycles a few times per hour in a conveyor or compressor application. Maximum switching rate in AC-3 duty is 750 operations per hour; in AC-4 (inching/jogging) it drops to 250 per hour — stay below these limits to avoid contact welding.
Sourcing — current production, quoted to order
This part is sourced through authorized Siemens distribution channels and quoted to order against your BOM quantity.