The Siemens 3TF47720AF0 is a heavy-duty 3-pole power contactor from the renowned 3TF SICOP series, engineered for reliable switching and control of three-phase motors and industrial power circuits.
This contactor is rated for 70A AC-3 duty and is suitable for controlling motors up to 37 kW at 415V AC. The AF0 variant features a 110V AC control coil and comes with 2NO + 2NC built-in auxiliary contacts, making it ideal for motor starters, MCC panels, pumps, compressors, HVAC systems, conveyors, and industrial automation applications.
• Siemens 3TF SICOP Series
• Model: 3TF47720AF0
• Heavy-Duty Power Contactor
• 3-Pole Design (3NO Main Contacts)
• 110V AC Coil Voltage (AF0)
• Built-In 2NO + 2NC Auxiliary Contacts
• Rated Current: 70A AC-3
• Motor Rating: 37 kW at 415V AC
• Size S3 Frame Construction
• High Electrical & Mechanical Endurance
• Screw-Type Terminal Connections
• Reliable Switching Performance
• Compatible with Siemens Thermal Overload Relays
• Suitable for Continuous Industrial Operation
| Parameter | Specification |
|---|---|
| Manufacturer | Siemens |
| Series | 3TF SICOP |
| Part Number | 3TF47720AF0 |
| Product Type | Heavy Duty Power Contactor |
| Number of Poles | 3 Pole |
| Main Contacts | 3NO |
| Auxiliary Contacts | 2NO + 2NC |
| Coil Type | AC Coil |
| Coil Voltage | 110V AC |
| Frequency | 50/60 Hz |
| Rated Current (AC-3) | 70A |
| Motor Rating @ 415V AC | 37 kW |
| Rated Insulation Voltage (Ui) | 690V |
| Frame Size | S3 |
| Mounting Type | Panel Mount |
| Connection Type | Screw Terminal |
| Utilization Category | AC-3 |
| Protection Class | IP20 |
| Mechanical Life | Up to 10 Million Operations |
| Standard | IEC 60947-4-1 |
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