m550-U synchronous reluctance motors IE5, 0.37–11 kW
Country: Germany · Model: m550-U
The m550-U are synchronous reluctance motors of class IE5 rated 0.37–11 kW with a rated torque of 1.9–56.4 N·m. Starting torque reaches 250 % of rated, which matters for conveyors and machines with heavy starting. The motors are designed for a frequency inverter and sensorless control.
- Power
- 0.37–11 kW
- Torque
- 1.9–56.4 N·m
- Efficiency class
- IE5 (IEC TS 60034-30-2), Grade 2 (GB 30253-2024)
- Starting torque
- up to 250 %
Technical specifications
| Power | 0.37–11 kW |
|---|---|
| Torque | 1.9–56.4 N·m |
| Efficiency class | IE5 (IEC TS 60034-30-2), Grade 2 (GB 30253-2024) |
| Starting torque | up to 250 % |
| Mounting | B3, B5, B14 |
| Control | sensorless from the manufacturer's drives |
Specifications are taken from the manufacturer’s technical documentation. Updated .
Description
Compared with an IE3 motor, losses are reduced by up to 40 %. Class IE5 belongs to Grade 2 under GB 30253-2024, and the technical specification IEC TS 60034-30-2, which describes classes IE5 and IE6, covers variable-speed motors. The motors are built on a modular principle, which makes it possible to fit them precisely to the machine. Versions B3, B5 and B14, connection via a terminal box or plug connectors. They are used on their own, in g500-H, g500-S and g500-B geared motors, and with i510 cabinet, i550 cabinet, i550 protec, i550 motec and i650 motec inverters. They can be supplied with a mounted i550 motec or i650 motec, and with the i650 motec a logic PLC and STO via CIP Safety are added. For these motors the i950 cabinet servo inverter has a separate sensorless mode. According to 2025 press releases, the m550 (0.25–11 kW) together with the m650 (0.75–22 kW) and i650 motec give an overload torque of up to 300 % from standstill without a sensor, and the combination of motor, gearbox and drive reduces losses by up to 60 %.
How to choose
The m550-U is chosen for variable-speed machines where lower energy consumption and a reserve against future efficiency requirements matter. If power up to 22 kW in a more compact frame is needed, look at the m650-U, and for an even higher efficiency class at the m550-V.
Request a price and lead time
m550-U synchronous reluctance motors IE5, 0.37–11 kW. We reply within one business day.
Or email office@usk.ua or call +38 (044) 339-50-20.
FAQ
What efficiency class do the m550-U have?
IE5 under IEC TS 60034-30-2, Grade 2 under GB 30253-2024. Losses are lower, by up to 40 %, compared with IE3.
What is the starting torque of the m550-U?
Up to 250 % of rated from standstill. This matters for conveyors and machines with heavy starting.
Is a feedback sensor needed?
The motors are designed for sensorless control by the drives. The i950 cabinet servo inverter supports a separate mode for them.
Which versions and connections are available?
B3, B5 and B14. Connection via a terminal box or standard plug connectors.
What is the m550-U combined with?
On its own, with g500 geared motors, and with i510 cabinet, i550 cabinet, i550 protec, i550 motec and i650 motec inverters.
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Need a price, lead time or replacement?
Send us a request and we will confirm the configuration, lead time and delivery terms. We reply by email.