Siemens MICROMASTER MMV550/3 Variable Frequency Drive
Siemens MICROMASTER MMV550/3 VFD
The Siemens 6SE3221-3DC40 is a MICROMASTER VECTOR MMV550/3 variable frequency drive (VFD) designed for constant torque applications. It operates on a 3-phase AC input of 380-500V with a 10% tolerance and handles 50/60Hz frequencies. This drive has a rated power output of 5.5 kW and can handle 150% overload for 60 seconds, or 200% for 3 seconds. Its compact dimensions are 215 x 185 x 195 mm (H x W x D), with an IP20 protection rating, suitable for ambient temperatures between 0 and 50°C.
This VFD is ideal for applications requiring precise speed control and consistent torque, such as conveyors, pumps, fans, and extruders. The MICROMASTER series is known for its reliability and robust performance in industrial settings, supporting various manufacturing and process industries.
Stanlo Automation, a veteran-owned surplus parts distributor, stocks the Siemens 6SE3221-3DC40. We provide access to essential industrial automation components, ensuring you can find the parts you need for maintenance and upgrades.
| Model | MICROMASTER MMV550/3 |
| Part Number | 6SE3221-3DC40 |
| Input Voltage | 380-500V AC (3 Phase) |
| Output Power | 5.5 kW |
| Torque Type | Constant Torque |
| Overload | 150% for 60s, 200% for 3s |
| Dimensions (HxWxD) | 215 x 185 x 195 mm |
| Protection | IP20 |
| Ambient Temp | 0-50°C |