The Siemens 3RT1034-3AP00 is a SIRIUS power contactor, size S2, designed for switching motor loads and resistive loads in control panels. It mounts on a 35 mm DIN rail per EN 50022 with a screw-and-snap-on mechanism, saving panel space at 55 mm wide. Rated 15 kW at AC-2 400 V for slip-ring motor duty, and 29 A at AC-4 400 V for reversing or inching applications. The AC-1 resistive rating supports 1200 operations per hour; AC-3 and AC-4 max out at 1000 and 250 ops/h respectively. Auxiliary contact ratings: 10 A at 24 V, 6 A at 230 V, 3 A at 400 V — enough for pilot-duty feedback to a PLC input module.
Mounting and Integration
Snap-on to 35 mm DIN rail per EN 50022. Side-by-side mounting allowed without derating for the listed ratings. Screw terminals accept solid 2x (0.25–2.5 mm²) and stranded up to 2x (25 mm²) for the main circuit. Depth 115 mm, height 112 mm, width 55 mm. The IP20 front enclosure suits panel-mount; the terminal area is IP00, so finger-safe shrouds or gland-plate clearance is needed on the wiring side.
Lifecycle and Compliance
Operating temperature range -25 to +60 °C, storage from -55 to +80 °C. Mechanical endurance typical 10 million operations.