Designed and tested according to IEC standards
Prepared for frequency converter drive
Certified according to ATEX and IECEx

Explosion Proof Motors

When operating in hazardous areas there is often a demand for special motors like the explosion proof motors from Hoyer.

Frame size
0,09-200 kW
Standard protection
Ex db eb
Explosion group

Technical information

Our explosion proof motors are designed according to IEC 60079-0, 60079-1, 60079-7 and 60079-31. They are characterised by high material quality, a robust design and bearings greased for life. Motor series 5AT in aluminum and 7AT in cast iron are certified in conformity with last editions of ATEX and IECEx rules and certified by CESI.

The motors are low voltage three-phase TEFC motors, and designed in protection enclosure „db“. They can be used in zone 1 and 2 endangered by explosive atmospheres in all industry except mining. Hazardous zones exists in industries such as chemical and pharmaceutical production, refineries, offshore platforms and tankers.

All our explosion proof motors series 5AT and 7AT have the highest explosion group IIC, temperature classes T4 at ambient temperatures from -20 to +60 °C.

Application information

Hoyer explosion proof motors are used within a wide variety of applications in hazardous areas and markets such as Marine and Oil & Gas. Some of the typical applications are:

Pumps – read about our industrial pump solutions here
Gas pumps – read about our O&G solutions here
Fans – part of our solutions for the HVAC industry
Hydraulics – read about our HPU solutions here

Let us support you

If you have any questions please get in contact with us. We are always willing to go the extra mile for our business partners.


When it comes to explosion proof motors, documentation is crucial. We have made it easy for you to hand-pick the documentation package you need. Just go to our certificate section.

See all certificates