Slip ring motors (wound rotor motors) are the premier choice for heavy industrial applications requiring maximum starting torque under high inertia loads with low starting current impact. Since 1927, MENZEL Elektromotoren has engineered and manufactured robust slip ring motors up to 20,000 kW (20 MW) and 13,800 V (13.8 kV).
Whether employed in cement mills, raw material shredders, mine fans, heavy water pumps, or steel rolling mills, MENZEL wound rotor motors stand out for extreme mechanical durability, thermal overload resistance, and total operational reliability. Every motor is custom-tailored to site-specific electrical and environmental requirements according to international standards (IEC, EN, VDE, DIN, ISO).
We supply standard and custom non-standard operating voltages tailored to global utility grids, offshore platforms, and remote mining sites.
Low Voltage (LV): 220 V, 380 V, 400 V, 500 V, 690 V
Medium & High Voltage (MV/HV): 3,000 V, 3,300 V, 5,000 V, 5,500 V, 6,000 V, 6,300 V, 6,600 V, 10,000 V, 10,500 V, 11,000 V
Low Voltage (LV): 380 V, 400 V, 440 V, 480 V, 500 V, 525 V, 575 V, 690 V
Medium & High Voltage (MV/HV): 2,300 V, 4,160 V, 6,000 V, 6,600 V, 7,200 V, 11,000 V, 13,200 V, 13,800 V
Select the optimal cooling variant designed for your operating ambient temperature, air quality, and enclosure requirements.
Cost-effective cooling solution for clean, indoor plant environments requiring high power density and efficient heat dissipation.
Enclosed cast-iron design with external shaft-mounted fan. Ideal for harsh, dusty, or humid operating conditions (IP 55 / IP 56).
Fully closed internal cooling loop paired with top-mounted air-to-air tubular heat exchangers for extreme continuous industrial duty.
Low noise, high-efficiency water-jacketed drive systems engineered for municipal water networks, power plants, and marine vessels.
Robust steel frame construction with internal cooling tubes surrounding the stator core. Exceptional resistance to extreme vibration.
Available with motorized brush lifting and short-circuiting mechanisms to minimize brush wear during continuous operation, or certified Ex p for hazardous zones.
Why global procurement managers and plant engineers specify MENZEL wound rotor drive solutions.
Precision-calculated electromagnetic design minimizes internal electrical losses, delivering maximum efficiency, lower energy consumption, and high operational economy over decades.
Provides 100% full load torque right from standstill without relying on complex, expensive variable frequency inverters (VFDs), drastically simplifying power electronics infrastructure.
We manufacture 100% mechanically identical drop-in replacement motors for obsolete models (Siemens, ABB, AEG, Alstom), matching original shaft heights, foot distances, and terminal positions.
Built with regreasable anti-friction bearings or force-lubricated sleeve bearings designed to withstand severe radial/axial loads and intense shock vibration in crusher and mill applications.
Manufactured in Hennigsdorf, Germany under ISO 9001, ISO 14001, and ISO 45001 certifications. Global clients are welcome to observe full-load factory acceptance testing (FAT) live.
Maintaining one of Europe's largest stocks of high-voltage and low-voltage slip ring motors up to 15,000 kW, enabling immediate emergency shipment worldwide to eliminate plant downtime.
Real-world case studies demonstrating rapid customization, critical emergency delivery, and extreme-duty performance.
Rapid modification of a 2,250 kW stock motor with custom foot layout to replace a failed mill drive without site modifications.
High-reliability 3,300 V slip ring motor engineered to withstand severe thermal cycling and abrasive ambient dust.
Custom tube-cooled IC 511 motor with automatic motorized brush lifting mechanism for continuous municipal water supply.
Customized 10 kV IC 611 slip ring motor technology engineered to operate under extreme sub-zero ambient weather conditions.
Our experienced high-voltage engineering team is ready to analyze your grid parameters, load profile, and mounting dimensions. Receive a detailed technical quotation tailored for your industrial plant.
Inquire Now