Product Overview

The Siemens 3TS3200-0XM0​ is a 3-pole AC contactor from Siemens’ 3TS family, engineered for switching 220 V AC 50 Hz control circuits and carrying up to 32 A under AC-3 duty at 400 V mains—equivalent to roughly 15 kW motor load. Positioned as Size 1 in the Siemens low-voltage switching portfolio, the 3TS3200-0XM0​ serves as the electromechanical switchgear interface between a PLC/DCS output or a pilot device (pushbutton, thermal OL relay, motor protection circuit breaker) and the power side of an induction motor, pump, compressor, fan, or conveyor drive. The “0X” suffix denotes the 220 V 50 Hz AC coil; “M0” flags the base configuration with 1NO + 1NC auxiliary contact integrated on the contactor body, eliminating the need for a separate auxiliary relay in simple starter schemes.Inside the molded housing, the Siemens 3TS3200-0XM0​ uses silver-alloy main contacts for arc resistance and anti-welding performance, with a magnet system optimized for low hum and reduced holding power dissipation—important on panels where a dozen contactors run side-by-side and cabinet ambient creeps upward. The coil is moisture- and dust-resistant treated (classic Siemens impregnation), rated for –25 °C to +60 °C ambient in the datasheet envelope (some distributor sheets list –5 °C to +40 °C as conservative panel rating; the wider –25 °C figure applies to the coil/contact system itself). Mechanical life is quoted ≥3 million operations; electrical life ≥1 million at AC-3 400 V / 32 A. The 3TS3200-0XM0​ mounts via M4/M5 screw fixings or on a 35 mm DIN rail using an adapter clip, and terminates through screw-cage connections that accept 1.5–10 mm² copper.Contextually, the 3TS series is the predecessor to today’s SIRIUS 3RT6/5 domestic-production line. Siemens China officially positions 3RT6/5 as the successor to the older 3TF/3TS domestic range, and new designs should spec 3RT. That said, the Siemens 3TS3200-0XM0​ remains heavily stocked as a retrofit/spare for ten-to-fifteen-year-old panels, machine tools, and OEM packages that were built when 3TS was the default Siemens contactor in China and select export markets. For those panels, the 3TS3200-0XM0​ drops in with zero footprint change—same Size 1 outline, same screw-terminal layout, same 1NO+1NC aux—so a line-down swap does not cascade into rewiring the starter bucket.

Technical Specifications

Main Features and Advantages

32 A AC-3 in a Size 1 footprint.​ The Siemens 3TS3200-0XM0​ delivers full 32 A motor-switching capacity (≈15 kW @ 400 V) without jumping to a Size 2 frame, which matters when you are reloading a crowded MCC bucket originally engineered to 3TS3200 envelope. The 1NO+1NC aux on-body means a simple DOL starter (contactor + thermal OL relay or motor protector) needs no extra 3TH auxiliary relay—cleaner BOM, fewer terminals to torque.Silver-alloy contacts, anti-weld.​ Main contacts on the 3TS3200-0XM0​ use high-purity silver alloy rather than bare copper or thin silver-plate, which pushes the welding threshold higher on inrush (motor DOL can hit 6–8× FLA for 50–100 ms). In pump and compressor starts where the across-the-line inrush repeats daily, this is what keeps the contactor from developing a “sticky” mains pole by year three.Low-hum magnet, treated coil.​ Siemens tunes the E-shaped laminated core and shading coil so the Siemens 3TS3200-0XM0​ does not buzz audibly at 2 a.m. in a quiet machine room—small detail, but on a panel with eight contactors holding on a 50 % duty cycle, cumulative hum is a real complaint. The 220 V 50 Hz coil is varnish-impregnated for moisture resistance, so coastal or high-humidity plants (cooling-tower pump panels, food-line washdown-adjacent starters) do not see coil-insulation tracking as early as with untrained windings.Mechanical 3 M / electrical 1 M cycles.​ The 3TS3200-0XM0​ is rated ≥3 million mechanical operations and ≥1 million electrical at AC-3 32 A / 400 V. For a typical conveyor star-delta or DOL that cycles 200×/day, that is 13+ years before electrical wear-out—long enough that the panel enclosure usually ages out first.Screw-terminal simplicity.​ The Siemens 3TS3200-0XM0​ uses the classic Siemens screw-cage clamps accepting 1.5–10 mm² copper (check exact torque on the nameplate; typical is 1.2–1.8 N·m on control, 2.5–3.0 N·m on power for Size 1). No spring-clamp learning curve, no M12/spring adapter—just slotted screwdriver, which matters on legacy sites where the maintenance crew has never seen a SIRIUS 3RT spring terminal.Legacy-drop-in value.​ The real competitive edge of the 3TS3200-0XM0​ today is not spec-sheet superiority over 3RT (it lags slightly—3TS insulation voltage starts at 660 V while 3RT6 is 400–1000 V with tighter AC-4 ratings) but availability as a like-for-like spare. If your MCC was built 2010-era with 3TS throughout, dropping a 3RT6 in means checking footprint, checking aux-side clearance, and possibly re-tagging the wiring. Dropping another Siemens 3TS3200-0XM0​ means “swap and close the panel.”