The Siemens 3TF55020AF0 is a heavy-duty 3-pole power contactor from the highly reliable 3TF SICOP Series, engineered for switching and controlling large three-phase motors and heavy industrial electrical loads.
This variant features a 110V AC control coil (AF0) and includes 2NO + 2NC built-in auxiliary contacts. With an AC-3 current rating of 330A, the contactor is suitable for controlling motors up to 160 kW at 415V AC, making it an excellent choice for MCC panels, large motor starters, compressors, pumps, HVAC plants, conveyors, mining operations, steel plants, cement industries, and industrial automation systems.
| Parameter | Specification |
|---|---|
| Manufacturer | Siemens |
| Series | 3TF SICOP |
| Part Number | 3TF55020AF0 |
| 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) | 330A |
| Motor Power Rating | 160 kW @ 415V AC |
| AC-1 Rating | 500A |
| Rated Insulation Voltage (Ui) | 1000V |
| Frame Size | S14 |
| 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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