The Siemens 3TF30100BB4 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 widely used in MCC panels, motor starter circuits, pump systems, compressors, HVAC systems, and industrial automation panels, where reliable switching with DC-operated control voltage is required.
This contactor is suitable for AC-3 duty motor applications, ensuring stable performance, high electrical endurance, and long operational life in industrial environments.
✔ Main contacts are used for AC motor switching
✔ Coil is DC operated (typically 24V DC variant)
✔ This is NOT a relay — it is a power contactor for motor control
• Siemens 3TF series power contactor
• Model: 3TF30100BB4
• 3-pole contactor design
• DC control coil (24V DC typical variant)
• Rated for 9A AC-3 motor duty
• Suitable for 3-phase motor switching
• Size 0 compact industrial design
• High electrical and mechanical life
• Screw terminal connection system
• Reliable arc quenching performance
• Shock and vibration resistant construction
• Compatible with thermal overload relays
• Designed for MCC and automation panels
• Auxiliary configuration (variant dependent)
| Parameter | Specification |
|---|---|
| Manufacturer | Siemens |
| Series | 3TF |
| Part Number | 3TF30100BB4 |
| Product Type | Power Contactor |
| Poles | 3 Pole |
| Coil Type | DC Coil (24V DC typical) |
| Rated Current | 9A (AC-3 duty) |
| Rated Power | ~4 kW at 415V AC |
| Utilization Category | AC-3 (motor control) |
| Frame Size | Size 0 |
| Mounting Type | Panel / DIN rail mounting |
| Terminal Type | Screw terminals |
| Application | Motor control, power switching |
| Brand | Siemens |
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