260 Series Explosion-proof Permanent Magnet Motor

260 Series Explosion-Proof Permanent Magnet Motors

Product Overview

The WHEATSTONE 260 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: 260 Explosion-Proof Series

Frame Size:260 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)
260ST-□570XX-EX-XXV(J)	402
260ST-□850XX-EX-XXV(J)	452
260ST-□11AXX-EX-XXV(J)	502
260ST-□14AXX-EX-XXV(J)	552
260ST-□17AXX-EX-XXV(J)	602
260ST-□20AXX-EX-XXV(J)	652
260ST-□570XX-EX-XXV(J)	520
260ST-□850XX-EX-XXV(J)	570
260ST-□11AXX-EX-XXV(J)	620
260ST-□14AXX-EX-XXV(J)	670
260ST-□17AXX-EX-XXV(J)	720
260ST-□20AXX-EX-XXV(J)	770

Motor Dimensions

Electrical Parameters

Main performance parameters
Motor Model	260ST-口57030-EX	260ST-口85030-EX	260ST-口11A30-EX
Rated Power(KW)	18.0	27.0	35.0
Rated current(A)	76.0	113.0	146.0
Rated speed(RPM)	3000	3000	3000
Maximum speed(RPM)	3600	3600	3600
Rated Torque(NM)	57.0	85.0	110.0
Maximum Torque(NM)	143.0	213.0	275.0
Rotor of Inertia(kg.cm²)	320.0	480.0	640.0