Standard / Explosion Proof Motor

Explosion-Proof Motors: Ensuring Safety in Hazardous Environments

In many industrial and public sectors, explosion hazards are an ever-present concern. These include environments such as chemical plants, refineries, drilling platforms, petrol stations, feed mills, and sewage treatment facilities.

An explosion risk arises whenever gases, vapors, mists, or dusts combine with oxygen in the air to form an explosive mixture. When such mixtures come into contact with an ignition source capable of releasing the minimum ignition energy, the result can be catastrophic—causing serious injury to personnel and significant equipment damage.

This risk is especially critical in the chemical and petrochemical industries, oil and gas transportation, mining, and grain or solids milling operations.

Technical Specifications and Classification

• Explosion Groups: Motors certified for the highest explosion group IIC, which also includes groups IIB and IIA.

• Connection Box Option: Available with Ex d connection box (order code K53).

• Zone Compatibility:

  • 1PQ8 series: Not suitable for Zone 21. Zones 2 and 22 available upon request.

  • 1LA8 series: Available for Zone 22 only (order codes M35, M39).

• Temperature Class: Standard utilization according to temperature class 155 (F).

• Converter Operation: Suitable for converter use under temperature class 155 (F).

• Hybrid Atmosphere: Ex motors are not approved for explosive atmospheres containing both dust and air (hybrid mixtures). Currently, no standard defines product requirements for such conditions.

• Temperature Limits:

  • IE1: 140 °C

  • IE2: 120 °C (exceptions: 1MB1.11–1AD5, 1MB1.21–1AD5 → 130 °C)

  • IE3: 120 °C

• Certification: See the EC type-examination certificate for detailed compliance information.

Typical Applications

Innomotics explosion-proof motors are trusted across industries where safety and reliability are paramount, including:

• Chemical and petrochemical plants

• Mineral oil and natural gas production

• Gas works and gas supply systems

• Petrol stations and coking plants

• Grain and solid material mills

• Sewage treatment facilities

• Wood processing (e.g., sawdust, tree resin)

• Any other sector with a risk of explosion

Safety You Can Rely On

Innomotics explosion-proof motors are engineered for maximum protection and certified performance under the most demanding conditions. They ensure uninterrupted, safe operation by preventing the ignition of explosive atmospheres — helping safeguard both people and equipment.