220 Series Explosion-Proof Permanent Magnet Motors
Product Overview
The WHEATSTONE 220 Series Explosion-Proof Permanent Magnet Motors are designed for hazardous industrial environments where explosive gases, vapors, or dusts may be present. Featuring advanced permanent magnet technology combined with robust explosion-proof construction, these motors ensure high efficiency, compact size, and superior reliability while maintaining compliance with global safety standards such as IECEx, ATEX, and China’s Ex certifications.
These motors are ideal for applications where precise control, high power density, and energy efficiency are critical, especially in industries such as oil & gas, chemical processing, mining, and hazardous material handling.
Key Features
Explosion-Proof Safety – Flameproof enclosure prevents ignition of explosive atmospheres, meeting Ex d IIB T4 Gb or equivalent classifications.
High Efficiency Design – Permanent magnet excitation reduces copper losses and improves energy efficiency.
Compact and Lightweight – Smaller frame size with higher power density compared to conventional induction motors.
Wide Speed Control Range – Stable performance across variable load and speed conditions.
Rugged Durability – High-strength housing, anti-corrosion treatment, and reinforced insulation for harsh operating environments.
Low Maintenance – Permanent magnet structure minimizes wear components, reducing servicing needs.
Technical Highlights
Motor Type: Permanent Magnet Synchronous Motor (PMSM)
Series: 220 Explosion-Proof Series
Frame Size:220 mm
Rated Voltage: 220V / 380V / Custom options
Power Range: 50W – 1.5kW (customizable)
Speed Range: 300 – 5000 rpm
Insulation Class: F or H
Protection Level: IP65 – IP67
Cooling Method: Natural cooling (IC410) or forced cooling (IC416) available
Applications: Oil and gas equipment, chemical plants, mining machinery, hazardous conveyors, and automation systems
Motor Model
| Motor Model | L(mm) |
| 220ST-□400XX-EX-XXV(J) | 379
|
| 220ST-□600XX-EX-XXV(J) | 429 |
| 220ST-□750XX-EX-XXV(J) | 459 |
| 220ST-□850XX-EX-XXV(J) | 479 |
| 220ST-□10AXX-EX-XXV(J) | 529 |
| 220ST-□12AXX-EX-XXV(J) | 579 |
| 220ST-□15AXX-EX-XXV(J) | 629 |
| 220ST-□400XXB-EX-XXV(J) | 499 |
| 220ST-□600XXB-EX-XXV(J) | 549 |
| 220ST-□750XXB-EX-XXV(J) | 579 |
| 220ST-□850XXB-EX-XXV(J) | 599 |
| 220ST-□10AXXB-EX-XXV(J) | 649 |
| 220ST-□12AXXB-EX-XXV(J) | 699 |
| 220ST-□15AXXB-EX-XXV(J) | 749 |
Motor Dimensions
Electrical Parameters
| Main performance parameters |
| Motor Model | 220ST-口40030-EX | 220ST-口60030-EX | 220ST-口75030-EX | 220ST-口85030-EX |
| Rated Power(KW) | 12.0 | 18.0 | 23.0 | 26.0 |
| Rated current(A) | 53.0 | 80.0 | 102.0 | 115.0 |
| Rated speed(RPM) | 3000 | 3000 | 3000 | 3000 |
| Maximum speed(RPM) | 3600 | 3600 | 3600 | 3600 |
| Rated Torque(NM) | 40.0 | 60.0 | 75.0 | 85.0 |
| Maximum Torque(NM) | 80.0 | 120.0 | 150.0 | 170.0 |
| Rotor of Inertia(kg.cm²) | 98.0 | 147.0 | 176.0 | 196.0 |
| Main performance parameters |
| Motor Model | 220ST-口10A30-EX | 220ST-口12A30-EX | 220ST-口15A30-EX |
| Rated Power(KW) | 30.0 | 36.0 | 45.0 |
| Rated current(A) | 133.0 | 160.0 | 200.0 |
| Rated speed(RPM) | 3000 | 3000 | 3000 |
| Maximum speed(RPM) | 3600 | 3600 | 3600 |
| Rated Torque(NM) | 100.0 | 120.0 | 150.0 |
| Maximum Torque(NM) | 200.0 | 240.0 | 300.0 |
| Rotor of Inertia(kg.cm²) | 245.0 | 294.0 | 343.0 |
| Main performance parameters |
| Motor Model | 220ST-口40030-EX-380V | 220ST-口60030-EX-380V | 220ST-口75030-EX-380V | 220ST-口85030-EX-380V |
| Rated Power(KW) | 12.0 | 18.0 | 23.0 | 26.0 |
| Rated current(A) | 31.0 | 46.0 | 59.0 | 66.0 |
| Rated speed(RPM) | 3000 | 3000 | 3000 | 3000 |
| Maximum speed(RPM) | 3600 | 3600 | 3600 | 3600 |
| Rated Torque(NM) | 40.0 | 60.0 | 75.0 | 85.0 |
| Maximum Torque(NM) | 80.0 | 120.0 | 150.0 | 170.0 |
| Rotor of Inertia(kg.cm²) | 98.0 | 147.0 | 176.0 | 196.0 |
| Main performance parameters |
| Motor Model | 220ST-口10A30-EX-380V | 220ST-口12A30-EX-380V | 220ST-口15A30-EX-380V |
| Rated Power(KW) | 30.0 | 36.0 | 45.0 |
| Rated current(A) | 76.0 | 92.0 | 115.0 |
| Rated speed(RPM) | 3000 | 3000 | 3000 |
| Maximum speed(RPM) | 3600 | 3600 | 3600 |
| Rated Torque(NM) | 100.0 | 120.0 | 150.0 |
| Maximum Torque(NM) | 200.0 | 240.0 | 300.0 |
| Rotor of Inertia(kg.cm²) | 245.0 | 294.0 | 343.0 |
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