Technical Specifications

Main Features and Advantages

The Siemens 3TS3200-0XM0​ is built around the design priorities that made the 3TS family a default choice across decades of European machine building: predictable performance, serviceable construction, and interchangeability with Siemens’ own overload-relay ecosystem.

Silver-alloy main contacts:

The three main poles use a silver-alloy tip geometry that resists welding under inrush and holds up against arcing across repeated make-break cycles. At 18 A AC-3, the Siemens 3TS3200-0XM0​ sees its heaviest stress at motor start-up, where inrush can run 5–7 × rated current for several hundred milliseconds. The silver alloy gives the contact tips the margin to absorb that without pitting that would otherwise shorten electrical life.

Coil and magnetic system:

The 220 V AC 50 Hz coil is wound on a bobbin that’s been varnish-impregnated for moisture resistance, so the contactor tolerates the humidity swings of pump houses, wash-down-adjacent panels and unconditioned agricultural buildings. The magnetic circuit is tuned for low hum and reduced holding power — the “click” on pickup is firm but not loud, and the hold-in VA is low enough that a row of these on a shared 220 V control transformer doesn’t stress the supply.

Mechanical durability:

With a quoted mechanical life around 10 million operations and AC-3 electrical life in the region of 1 million, the Siemens 3TS3200-0XM0​ is sized for machines that see regular cycling — not just occasional isolation. Conveyor starts, compressor load/unload, pump duty cycling — all sit comfortably inside this life budget.

Compact footprint:

At ~45 mm width the 3TS32 frame is narrow enough to let a single 200 mm DIN rail carry four contactors plus a few relays, which matters on OEM panels where every millimetre is negotiated. The Siemens 3TS3200-0XM0​ keeps the footprint tight by omitting built-in aux contacts in the M0 base config — a deliberate cost and space choice when the application only needs main-power switching.

3UA overload relay integration:

Snap a 3UA52 or 3UA54 bimetal overload onto the load-side tongue of the Siemens 3TS3200-0XM0​ and you have a Class 10 / Class 20 motor protection starter that complies with IEC 60947-4-1, no extra wiring between contactor and relay. For maintenance teams, this means one spare contactor + one spare overload cover most 18 A motor starters on the line.

Legacy continuity:

Where a plant’s MCC was originally specced in 3TS, the Siemens 3TS3200-0XM0​ drops in without re-drilling the panel or reworking the coil-control wiring. That “like-for-like” path is the real value proposition — especially as the 3TS line transitions to 3RT and lead-times on specific 3TS suffixes lengthen.

Application Field

The Siemens 3TS3200-0XM0​ is specified wherever an 18 A AC-3 motor needs dependable start-stop switching on a 220 V 50 Hz control supply, and where the panel designer either doesn’t need built-in auxiliary contacts or prefers to mount them separately. In water and wastewater plants, the contactor routinely switches borehole pumps, circulation pumps and aeration-blower motors in local control panels where 220 V is the standard control voltage inherited from the site transformer. In HVAC and building services, fan-coil units, make-up air handlers and small chiller auxiliary pumps are commonly switched through a 3TS32 frame, often paired with a 3UA52 overload and a separate NO/NC aux block clipped to the side face when run/ fault feedback is needed at the BMS.

Agricultural machinery and small-process OEMs — grain augers, irrigation boosters, pellet-mill conveyors, concrete batch small-motors — favour the Siemens 3TS3200-0XM0​ because the 220 V 50 Hz coil matches single-phase-derived control transformers common outside North America, and the 18 A frame covers the bulk of 3–7.5 kW motor ratings seen in those applications. In Asian and Southern-European machine exports, 220 V 50 Hz is the dominant control voltage, making the “0X” coil suffix the default pick and keeping the Siemens 3TS3200-0XM0​ on the BOM rather than the 230 V or 240 V variants. Retrofit and MRO teams also stock it as a direct spare for panels originally built with 3TS3200-0XB0 (110 V), 3TS3200-0XF0 (24 V) or other 3TS32 coil variants, since the mechanical parts are identical and only the coil cassette differs — though for the 0XM0 specifically, the 220 V 50 Hz coil is non-interchangeable with the 60 Hz or 230 V variants, so matching the nameplate matters.