m650-U IE5 motors at 120 Hz, 0.75–22 kW

Country: Germany · Model: m650-U

The m650-U three-phase motors of class IE5, rated 0.75–22 kW with a rated torque of 1.9–56.5 N·m, are designed for a rated frequency of 120 Hz. Because of the higher frequency they are two frame sizes smaller than an IE2/IE3 motor of the same power. Starting torque from standstill reaches 250 %, so the series suits dynamic drives in limited space.

Power: 0.75–22 kW
Torque: 1.9–56.5 N·m
Efficiency class: IE5 (IEC TS 60034-30-2)
Frequency: 120 Hz

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Technical specifications

Power	0.75–22 kW
Torque	1.9–56.5 N·m
Efficiency class	IE5 (IEC TS 60034-30-2)
Frequency	120 Hz
Frame size	two sizes smaller than IE2/IE3 of the same power
Starting torque	up to 250 %
Mounting	B3, B5, B14

Specifications are taken from the manufacturer’s technical documentation. Updated 11/06/2026.

Description

Losses are lower than in an IE3 motor, by up to 40 %. Class IE5 corresponds to Grade 2 under GB 30253-2024 and is confirmed under IEC TS 60034-30-2 for variable-speed motors. A wide control range and a low rotor moment of inertia give lower energy consumption during speed changes and constant torque across the whole range. The motor is intended for operation from a frequency inverter. Versions B3, B5 and B14, modular design, connection via a terminal box or plug connectors. It can be ordered with a mounted i550 motec or i650 motec, and with the i650 motec a logic PLC, table positioning and STO via CIP Safety are added. The i950 cabinet servo inverter supports sensorless control of m650 motors. According to 2025 press releases, the m550 (0.25–11 kW) and m650 (0.75–22 kW) pair with the i650 motec gives an overload torque of up to 300 % without a sensor, and the combination of motor, gearbox and drive reduces losses by up to 60 %.

How to choose

The series is taken where a wide speed range and dynamics are needed in limited mounting space. The motor is installed on its own, in a g500-H, g500-S or g500-B geared motor with an output torque of up to 4500 N·m, or together with i510 cabinet, i550 cabinet, i550 protec, i550 motec and i650 motec inverters. If an even higher efficiency class is needed, look at IE6 in the m550-V series.

Request a price and lead time

m650-U IE5 motors at 120 Hz, 0.75–22 kW. We reply within one business day.

Or email office@usk.ua or call +38 (044) 339-50-20.

FAQ

What are the power and torque of the m650-U motors?

Power 0.75–22 kW, rated torque 1.9–56.5 N·m. Starting torque reaches 250 % from standstill.

Why is the m650-U smaller than a standard motor?

It runs at 120 Hz, so it is two frame sizes smaller than an IE2/IE3 motor of the same power.

How much lower are the losses in the m650-U?

Compared with an IE3 motor, losses are lower by up to 40 %. Class IE5 is confirmed under IEC TS 60034-30-2.

Can the m650-U be supplied directly from the mains?

No, the motor is intended for operation from a frequency inverter, not directly from the mains. The i510 cabinet, i550 cabinet, i550 protec and i550 motec are suitable for it.

What mounting versions does the m650-U have?

B3, B5 and B14. Connection is via a terminal box or plug connectors.