What This Part Is
The 3RT1054-2AR36: This contactor uses a screw-fixing method for panel mounting and has spring-type terminals on the magnet coil, which means no tool needed for the coil wiring — handy when you're swapping one out on a live route.
Key Ratings and What They Mean for Your Panel
The 440 to 480 V AC rated value tells you this contactor is built for 480 V three-phase systems common in North American industrial plants. It'll handle 400 V European gear too, but the coil and main poles are specced for that 480 V sweet spot. Operating temperature range of -25 to +60 °C means it'll sit happily in a non-conditioned enclosure next to a hot motor starter bucket. Storage range of -55 to +80 °C covers whatever the warehouse throws at it. Mechanical life of 10 million operations typical for this contactor size — that's the mechanical endurance of the switching mechanism before wear-out. Electrical life depends on the load: at AC-3 (motor starting) it's rated for 1000 operations per hour max; at AC-4 (inching/plugging) it drops to 130 per hour.
Mounting and Wiring Notes
Mounting position allows vertical surface mounting with +/-90° rotation and +/-22.5° tilt front-to-back. That's flexible enough for most panel layouts, but keep the arcing clearance in mind: 10 mm upward, 20 mm forward, 10 mm sideways, 10 mm downward. Main power terminals accept stranded wire from 25 to 120 mm² — that's serious cable, appropriate for the Size S6 frame. Auxiliary and coil terminals use 2x 0.25 to 2.5 mm² solid or stranded, spring-cage style. Fastening is via screw fixing through a single 9 mm hole. That's a bolt-down mount, not DIN rail — plan for a drilled backplate or mounting bracket.