Explosion Proof Motor Services – ATEX Approved Engineers

In potentially hazardous environments such as drilling rigs, quarries, wastewater processing plants and food production lines, specialist ATEX motors are required to meet safety specifications and ensure the operation can continue to run efficiently without the risk of explosion or failure.

These specialist motors can be utilised to protect against hazardous gases, dust, extreme temperatures, high humidity and come with design features such as pressurisation, enclosement, fire resistance and encasement to protect against and contain explosions.

At Mawdsleys, we offer a complete service for explosion proof motors including design, supply, installation and ongoing repairs and maintenance. Members of our team hold ATEX certification enabling them to work in or near to potentially explosive atmospheres.

Our Ex Motor Services

Our all-encompassing service for motors used in hazardous areas includes:

Types of Ex Motor  

Potentially explosive atmospheres have zone classifications which define the minimum safety level a motor in that atmosphere must meet. The most common types of motor include:

Ingress Protection (IP) Ratings 

Preventing any water or foreign objects from entering the motor is critical in potentially explosive atmospheres, IP ratings show how well protected the motor is against both of these.

Solid Foreign Objects


0 – No protection 0 – No protection
1 – Protected against solid foreign objects of 50 mm and greater 1 – Protected against vertically falling drops
2 – Protected against solid foreign objects of 12,5 mm and greater 2 – Protected against vertically falling water drops when enclosure tilted up to 15°
3 – Protected against solid foreign objects of 2,5 mm and greater 3 – Protected against spraying water
4 – Protected against solid foreign objects of 1,0 mm and greater 4 – Protected against splashing water
5 – Dust-protected 5 – Protected against water jets
6 – Dust-tight 6 – Protected against powerful jets
7 – Protected against the effects of temporary immersion in water
8 – Protected against the effects of continuous immersion in water
9 – Protected against high pressure and temperature water jets

Read our blog post to find out more about motor IP ratings. 

Certification Markings

On an ATEX motor nameplate, you will find the information relating to the motor’s construction and level of protection. Under the ATEX directive, the following will be present on an ex motor:

ATEX Certification

Where any electrical equipment such as a motor is being used in a hazardous area, it must comply with ATEX regulations, the set of rules which relates to equipment and protective systems intended for use in potentially explosive atmosphere.

Ex motors will carry a stamp with all the necessary information relating to the motor including the CE marking, ID of the notified body responsible for the approval, the European Commission mark for Ex products, the equipment group and the equipment category.

There are two European Directives in place for the control of explosive atmosphere:

  • Directive 1999/92/EC (also known as ‘ATEX 153’ or the ‘ATEX Workplace Directive’).
  • Directive 2014/34/EU (also known as ‘ATEX 114’ or ‘the ATEX Equipment Directive’).

At Mawdsleys, our engineers are ATEX certified to be able to work on equipment including motors which have ATEX certification meaning it has been tested and approved for use in hazardous and explosive environments.

Common Applications and Industries

Potentially explosive atmospheres occur when flammable gases, mists, vapours or dust mix with the air creating the risk of an explosion.

Specialist motors are used in a wide range of industries to keep operations running efficiently whilst also protecting the motor. Some of the most common sectors where an Ex motor is required include:

Within these sectors, Ex motors are used within pumps, fans, hydraulics, mixers and more.

Complete ATEX Motor Services

If you need a specialist motor for your operation, we can help. We offer a wide range of specialist motors to offer protection of all types and have a team of specially trained engineers who can safely carry out work on these types of motors.

Unlike other providers, we offer a complete service and can assist you with every step from initial enquiry through to design, installation and ongoing work.

For more information, give one of our team a call today on 0117 955 2481 or fill out a contact form and one of our team will get back to you.

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