WEG W22 Low Voltage Cast Iron Motors
The WEG W22 Series (featured model: W22 132S-4 5.5 kW IE3) represents the pinnacle of WEG's low voltage three-phase induction motor technology, engineered specifically to offer high performance, maximum energy savings, and extreme durability in severe industrial environments. Built with a highly aerodynamic FCEN (Totally Enclosed Fan Cooled - TEFC) cast iron frame, the W22 design optimizes airflow to drastically reduce operating temperatures and noise levels, thereby extending bearing life and minimizing maintenance. Covering a massive power range from 0.12 kW up to 500 kW in standard IEC frame sizes (63 to 355A/B), the W22 series guarantees compliance with global energy regulations by offering IE3 Premium Efficiency and IE4 Super Premium Efficiency options. Designed to withstand continuous operation in harsh conditions, W22 motors are the premier choice for driving pumps, fans, compressors, crushers, and heavy conveyors in the mining, water treatment, chemical, and steel industries.
Technical Specifications
| Featured Model | W22 132S-4 (5.5 kW / 7.5 HP, 4-Pole, 1460 RPM, IEC 132S Frame) |
|---|---|
| Brand / Manufacturer | WEG |
| Product Series | W22 Low Voltage Cast Iron Motor |
| Power Range Covered | 0.12 kW to 500 kW (0.16 HP to 670 HP) |
| Frame Sizes (IEC) | 63 to 355A/B (Cast Iron) |
| Efficiency Classes | IE2 (Standard), IE3 (Premium Efficiency), IE4 (Super Premium) |
| Number of Poles | 2, 4, 6, and 8 poles available |
| Enclosure & Cooling | IP55 Standard (IP56, IP65, IP66 optional) / TEFC (IC411) |
Documentation & Resources
WEG W22 Motor Power Rating & Frame Size Matrix
Complete selection matrix for WEG W22 4-Pole (1500 RPM synchronous) low voltage motors. Review rated motor power, IEC frame sizes, and efficiency classes:
| Motor Power (kW / HP) | Poles / Speed | IEC Frame Size | Efficiency Class | Typical WEG Model Code (4-Pole) |
|---|---|---|---|---|
| 0.75 kW (1.0 HP) | 4-Pole (~1440 RPM) | 80 | IE3 Premium | W22 80-4 0.75kW IE3 |
| 1.5 kW (2.0 HP) | 4-Pole (~1440 RPM) | 90L | IE3 Premium | W22 90L-4 1.5kW IE3 |
| 5.5 kW (7.5 HP) | 4-Pole (~1460 RPM) | 132S | IE3 Premium | W22 132S-4 5.5kW IE3 |
| 11.0 kW (15.0 HP) | 4-Pole (~1460 RPM) | 160M | IE3 Premium | W22 160M-4 11kW IE3 |
| 30.0 kW (40.0 HP) | 4-Pole (~1470 RPM) | 200L | IE3 Premium | W22 200L-4 30kW IE3 |
| 75.0 kW (100 HP) | 4-Pole (~1480 RPM) | 280S/M | IE3 / IE4 | W22 280S/M-4 75kW IE3 |
| 132 kW (175 HP) | 4-Pole (~1485 RPM) | 315S/M | IE3 / IE4 | W22 315S/M-4 132kW IE3 |
| 250 kW (340 HP) | 4-Pole (~1485 RPM) | 355S/M | IE3 / IE4 | W22 355S/M-4 250kW IE3 |
WEG Legacy & Competitor Retrofit Upgrade Guide
Upgrade obsolete standard efficiency motors or legacy WEG models to the current high-performance WEG W22 series with 100% mechanical alignment:
| Legacy / Standard Motor Type | Current W22 Equivalent | Key Performance & Efficiency Upgrades |
|---|---|---|
| Legacy WEG W21 Cast Iron Motors | W22 Series Direct Drop-In | Improved aerodynamic frame design, significantly lower vibration levels, and enhanced terminal box sealing. |
| Standard IE1/IE2 Competitor Motors (IEC) | W22 IE3/IE4 Series Energy Upgrade | 100% standard IEC mounting dimensions (foot/flange). Massive energy savings over the motor's lifecycle. |
| Standard Motors for VFD Applications | W22 Series (Inverter Duty) VFD Optimized | WISE® insulation system (WEG Insulation System Evolution) standard, providing superior resistance to voltage spikes from VFDs. |
Expert Technical Sourcing & System Integration Notes
When replacing older, inefficient motors in continuous process applications like steel mills, water treatment, or mining, upgrading to the WEG W22 IE3 or IE4 series provides rapid return on investment through energy savings. The W22's rugged cast iron construction and advanced WISE® insulation make it exceptionally reliable when driven by Variable Frequency Drives (VFDs). Simply provide us with your existing motor's nameplate data, and our technical engineering team will verify the IEC frame size, shaft dimensions, and electrical specs to deliver a 100% compliant replacement specification and proposal.
Core Benchmark Model Standard Configurations
- W22 80-4 (0.75 kW IE3)
- W22 90L-4 (1.5 kW IE3)
- W22 100L-4 (3.0 kW IE3)
- W22 132S-4 (5.5 kW IE3)
- W22 160M-4 (11 kW IE3)
- W22 180M-4 (18.5 kW IE3)
- W22 200L-4 (30 kW IE3)
- W22 225S/M-4 (45 kW IE3)
- W22 280S/M-4 (75 kW IE3)
- W22 315S/M-4 (132 kW IE3)
- W22 355S/M-4 (250 kW IE3)
- W22 355A/B-4 (315 kW IE3)
- WEG W21 to W22 Replacement
- WEG W22 IE4 Super Premium
- WEG W22 VFD Inverter Duty
- WEG W22 B5 Flange Mount
