The Siemens 3TF32000BM4 is a 3-pole industrial power contactor from the Siemens 3TF series, designed for switching and controlling 3-phase AC motors and electrical loads using a DC control coil.
It is commonly used in MCC panels, motor starter circuits, pump control systems, compressors, HVAC systems, and industrial automation systems, where reliable switching of motor loads with DC-operated control supply is required.
This model belongs to the 3TF32 Size 1 class (~16A AC-3 duty rating), suitable for medium motor applications up to ~7.5 kW at 415V AC.
⚠️ Industry note: Verified listings confirm BM4 variant typically uses 220V DC coil in the Siemens SICOP 3TF32 family.
✔ Main contacts are used for AC motor switching (AC-3 duty)
✔ Coil is DC operated (BM4 family – typically 220V DC in 3TF32 series)
✔ This is NOT a relay — it is a power contactor
• Siemens 3TF series power contactor
• Model: 3TF32000BM4
• 3-pole contactor design
• DC coil operated (BM4 family – ~220V DC control supply)
• Rated for 16A AC-3 motor duty
• Suitable for 3-phase motor switching
• Size 1 industrial compact design
• High electrical and mechanical life
• Screw terminal connection system
• Reliable arc quenching system
• Shock and vibration resistant construction
• Compatible with thermal overload relays
• Designed for MCC and automation panels
• Auxiliary contact configuration (typically 1NO in this family)
| Parameter | Specification |
|---|---|
| Manufacturer | Siemens |
| Series | 3TF |
| Part Number | 3TF32000BM4 |
| Product Type | Power Contactor |
| Poles | 3 Pole |
| Coil Type | DC Coil (BM4 family – ~220V DC) |
| Rated Current | 16A (AC-3 duty) |
| Rated Power | ~7.5 kW at 415V AC |
| Utilization Category | AC-3 (motor control) |
| Frame Size | Size 1 |
| Mounting Type | Panel / DIN rail mounting |
| Terminal Type | Screw terminals |
| Application | Motor control, power switching |
| Brand | Siemens |
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