Motor ratings and thermal derating
The 3RT5036-1AF00: At 400 V and 60 °C ambient, this contactor is rated for 38 kW motor load. That's the number that matters for a pump or conveyor drive in a warm enclosure — the spec table also lists 22 kW at 230 V and 66 kW at 690 V under the same 60 °C condition, but the 400 V figure is what most European panels will use.
Rated for 5,000 operations per hour at AC duty, with AC-3 maximum at 800 cycles per hour and AC-4 at 300.
Wiring and protection
Main terminals accept 2x (0.75 to 16 mm²) solid or stranded, or 2x (18 to 2 AWG). The recommended gL/gG fuse for type 2 coordination is 80 A.
Compliance and substance restrictions
The part carries a substance prohibitance date of March 1, 2017, which aligns with RoHS and REACH compliance milestones. For documentation, Siemens provides a CE declaration and typically UL/CSA certification on the SIRIUS line — the 3RT5036 frame is listed under UL 508 and CSA C22.2 No. 14. If your quality doc control needs a specific certificate number, the nameplate carries the traceability data.
This is an active-production part, not a liquidation gamble. If you're filling a BOM line or replacing a failed unit in a panel, the 55 mm width and screw terminals mean it swaps into the same footprint as other Size S2 contactors without rewiring the gland plate.