
WEX3WEX3 Series High Efficiency Low Voltage Explosion-Proof Motor
Low Voltage Explosion-Proof Motor WOLONG WEX3

WEX3 are flameproof low-voltage motors jointly developed by Wolong's European and Asian engineering teams: frames 80–355, 0.37–375 kW, 2–16 poles, IP55 (up to IP66), IC411, IE3 efficiency, class F or H insulation, S1–S9 duty. ATEX marking is II 2G Ex db IIB/IIC T4 Gb and II 2D Ex tb IIIB/IIIC T130 °C Db (certificate CNEX 19 ATEX 0006 X). For Russian projects the series is covered by TR CU 012/2011 certificate EAEU RU C-CN.HE17.B.00047/24 held by SDS and valid until 18.06.2029, so no separate certification is required for a delivery.
Specifications
- Power range
- 0.37–375 kW
- Frame sizes
- 80–355 mm
- Poles
- 2–16
- Voltage and frequency
- 200–1140 V (400 V basic; 380/660, 400/690, 415/720, 660/1140 V and others), 50/60 Hz
- Explosion protection (ATEX)
- II 2G Ex db IIB/IIC T4 Gb (or Ex db eb with increased-safety terminal box); II 2D Ex tb IIIB/IIIC T130 °C Db or II 3D Ex tc IIIB/IIIC T130 °C Dc
- EAEU marking
- 1Ex db IIB/IIC T4 Gb X, 1Ex db eb IIB/IIC T4 Gb X, Ex tb IIIB/IIIC T130 °C Db X, Ex tc IIIB/IIIC T130 °C Dc X, PB Ex db I Mb X
- Certificates
- TR CU 012/2011 — EAEU RU C-CN.HE17.B.00047/24 until 18.06.2029 (applicant Swiss Drive Systems LLC); ATEX CNEX 19 ATEX 0006 X (EN IEC 60079-0:2018, EN 60079-1:2014, EN 60079-7:2015/A1:2018, EN 60079-31:2014)
- Protection, cooling, efficiency, conditions
- IP55/IP56/IP65/IP66; IC411; IE3; class F or H insulation; S1–S9 duty; −55…+60 °C on DOL, −55…+50 °C and −55…+45 °C on inverter supply (up to 5400 rpm)
Applications
- Oil and gas processing pumps and compressors
- Fans in hazardous process areas
- Agitators and reactors in chemical plants
- Conveyor and elevator drives in dust-hazardous areas
- Natural gas treatment plant equipment
We will select the right size for your task and prepare a quotation under a direct SDS contract.







