MEBSGR wound-rotor induction motors with ribbed housing (IC411) up to 1200 kW

Country: Germany · Model: MEBSGR

Three-phase wound-rotor induction motors with slip rings in a ribbed housing with IC411 cooling, rated up to 1200 kW in frames 200–560. They are made for voltages from 230 V to 13.8 kV, and the low-voltage catalogue gives stator voltages of 230, 400, 500 and 690 V.

Voltage: 230 V – 13.8 kV (LV catalogue: stator 230, 400, 500, 690 V)
Power: up to 1200 kW
Frame: 200–560
Cooling: IC411

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Technical specifications

Voltage	230 V – 13.8 kV (LV catalogue: stator 230, 400, 500, 690 V)
Power	up to 1200 kW
Frame	200–560
Cooling	IC411
Protection degree	IP55, optionally IP65
Housing	grey cast iron with cast feet (optionally welded)
Insulation	class F, used to B
Mounting	IM B3 (optionally IM B35)
Overload	1.5 × In for up to 2 min once per hour
Bearings	rolling bearings with lubricating device

Specifications are taken from the manufacturer’s technical documentation. Updated 11/09/2026.

Description

Wound-rotor motors are chosen where high starting and breakaway torques are needed, sudden load shocks occur, the machine has a large moment of inertia or the grid is weak. The grey cast iron housing with cast feet (optionally welded) is torsionally stiff, resistant to vibration, cools well and is self-cleaning. Terminal boxes turn through 4 × 90°, and PTC thermistors are led to the box on the slip ring side. The standard mounting is IM B3, with special ones, for example IM B35, on request. Protection degree is IP55, optionally IP65, with class F insulation used to class B. Rolling bearings with lubricating devices are selected with a margin, which lowers maintenance costs.

How to choose

Powers are given for duty S1 at 40 °C and altitude 1000 m. Permissible current overload is 1.5 × In for up to 2 min once per hour. The motors are made to EN 60034 and IEC 60034. Typical drives are mills, crushers, shredders and refiners in the cement, paper and metallurgical industries and water management. The series replaces wound-rotor motors 4AK, AK and MTN when modernising heavy drives.

Request a price and lead time

MEBSGR wound-rotor induction motors with ribbed housing (IC411) up to 1200 kW. We reply within one business day.

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

FAQ

When is a wound-rotor motor chosen instead of a squirrel-cage one?

With high starting torques, sudden load shocks, a large moment of inertia of the machine or a weak grid. A low starting current relative to power is also needed.

What is the maximum power and what frames does MEBSGR have?

Up to 1200 kW in frames 200–560, with IC411 cooling.

What stator voltages are in the low-voltage catalogue?

230, 400, 500 and 690 V. The whole series is made from 230 V to 13.8 kV.

What overload is permitted?

Current of 1.5 × In for up to 2 min once per hour. Power is given for duty S1.

What protection degree and mounting?

IP55, optionally IP65. Standard mounting IM B3, others, for example IM B35, on request.