🔹 Power Contactor – Siemens 3TF68440CF7 (3TF Series Heavy Duty)
The Siemens 3TF68440CF7 is a heavy-duty vacuum power contactor from the 3TF6 series, designed for switching and controlling very high-power 3-phase electrical loads in industrial applications. It is commonly used in large motor control systems such as heavy-duty pumps, compressors, mining equipment, steel plants, and industrial automation systems where extremely high current handling and reliability are required.
This contactor is engineered for long electrical life, high switching endurance, and safe operation under continuous heavy load conditions. Its vacuum switching technology ensures minimal contact wear and stable arc quenching, making it suitable for frequent switching operations in demanding environments.
🔹 Key Features
• Siemens 3TF6 Series heavy-duty vacuum contactor
• Model: 3TF68440CF7
• Designed for very high-power 3-phase motor control
• Vacuum switching technology for high reliability
• Extremely high mechanical and electrical life
• Suitable for AC-3 heavy motor duty applications
• Strong arc-quenching performance for safe operation
• High endurance for frequent switching operations
• Industrial-grade rugged design for harsh environments
• Suitable for MCC, power control panels, and large industrial systems
• High vibration and shock resistance
• Low maintenance requirement
• Compatible with advanced industrial control systems
• Designed for continuous heavy industrial duty
| Parameter | Specification |
|---|---|
| Product Series | Siemens 3TF6 Heavy Duty Vacuum Contactor |
| Model Number | 3TF68440CF7 |
| Product Type | Power Contactor (Vacuum Type) |
| Pole Configuration | 3 Pole (3P) |
| Application Category | AC-3 (Heavy Motor Duty) |
| Coil Voltage | 110–132 V AC (50/60 Hz) |
| Auxiliary Contacts | 4NO + 4NC |
| Rated Power | Up to ~335 kW (depending on voltage) |
| Mounting Type | Chassis / Panel Mounting |
| Usage | Large motors, compressors, pumps, heavy machinery |
| Brand | Siemens |
| Duty Type | Extra Heavy Industrial Use |
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