STS Motors are a leading designer and manufacturer of explosion-proof motors. Our motors are used world-wide in hazardous locations – typically in oil and gas pipelines, offshore production platforms and petro-chemical installations.

Supply and output

Our Ex d motors are produced in different frame sizes providing outputs from 0.25kW to 6.5kW The motors are designed to cover a wide speed and voltage range with particular emphasis on low voltage battery / solar panel fed motors for pump drives of 24V. We also offer motors for variable speed duty for process machines.


Temperature range:

  • Standard -20°C to +40°C
  • Extreme -40°C to +60°C


IP55 or IP56

Frame sizes and mounting

Produced in IEC frame sizes dependent on the required output. A full range of mounting configurations is offer including flange, foot & flange and pad mounting for installation in fan ducts.

Manufacturing standards

Manufactured and tested in line with the requirements of EN60034-1, EN60079-0 and EN60079-1.

Optional peripheral equipment

In-line or right angle drive gearboxes and pumps can be supplied fitted.

Product Literature