The Siemens 3RT1035-1AM70-0KR0-ZW96 is a SIRIUS power contactor rated AC-3 40 A, 18.5 kW at 400 V, with a 200-240 V AC 50/60 Hz coil. Three-pole, Size S2 frame, screw terminals. The AC-3 rating means it's sized for switching three-phase squirrel-cage motors up to 18.5 kW under full-load starts — the usual duty for conveyor, pump, and fan drives in a control panel.
Lifecycle & Sourcing Reality
This part carries a lifecycle stage of 'current' but is explicitly marked as a phased-out product in the description. The official successor is the SIRIUS 3RT2 series. For BOM continuity, the 3RT2 is the drop-in replacement path for new designs. The 3RT1035-1AM70-0KR0-ZW96 is sourced to order against an RFQ through independent distribution — availability and current pricing confirmed at quote time.
Deployment Context
Size S2 frame mounts on a DIN rail in a standard IP20 enclosure. The 75 °C ambient rating means it can sit in a crowded panel without forced cooling — useful for retrofit into existing switchgear where airflow is limited. The 15-unit multi-unit packaging suggests it was originally specified for panel builders running a batch, not single-unit spares.