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 control systems, compressors, HVAC systems, and industrial automation panels, where reliable switching of motor loads is required.
This model belongs to the Size 0 (9A AC-3 class) contactor range, optimized for small motor control applications with high reliability and long electrical life.
• Siemens 3TF series power contactor
• Model: 3TF30100BB4
• 3-pole contactor design
• DC coil operated (commonly 24V DC variant in BB4 family)
• 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 contact configuration (typically 1NO)
| Parameter | Specification |
|---|---|
| Manufacturer | Siemens |
| Series | 3TF |
| Part Number | 3TF30100BB4 |
| Product Type | Power Contactor |
| Poles | 3 Pole |
| Coil Type | DC Coil (24V DC typical for BB4 variant family) |
| 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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