ATEX & IECEx Certified Engineering

Custom OEM Ex d Flameproof Electric Motors Supplier & Exporter in Barcelona

High-Performance Flameproof Drive Solutions (0.55 kW to 25 MW, 220V to 13.8 kV) Precision-Engineered for Petrochemical, Offshore, Marine & Heavy Industrial Operations across Catalonia, Spain & Global Exports.

1927 Engineering Heritage
25 MW Max Power Output
Ex d IIB/IIC Explosion Protection
100% Full-Load Tested

Featured Ex d Flameproof & Heavy-Duty Electric Motors

Explore our comprehensive range of ATEX, IECEx, and CE certified explosion-proof electric motors, custom-built for hazardous Zone 1 and Zone 2 environments in Barcelona and international export markets.

Heavy Crane Duty DC Motor for Crane MARATHON BROOK MROMPTON ATB MORLEY WEG OXFORD ABB KIRLOSKAR VACON SEW IDC BALDOR ZZJQ-816 50kw 100kw 150kw

Heavy Duty Crane DC Motor (50kW / 100kW / 150kW) Replacement for ABB / WEG / BALDOR

Power: 50kW – 150kW | Duty: S3/S4 Crane Hoist | Frame: Heavy Cast Iron / Steel
High Efficiency AC ABB High-Efficiency M2BAX 280kW 3-Phase AC Induction Motors Asynchronous Electric Motor With 220V/110V/380V/400V 60Hz Frequency

ABB M2BAX 280kW 3-Phase High-Efficiency AC Induction Motor

Rating: 280kW | Voltage: 220V/380V/400V | Freq: 50Hz / 60Hz IE3
Ex d Flameproof Nanyang YBX3/YBX4 Series Three-Phase 50Hz Ex d Flameproof Low Voltage Asynchronous Motor IE3 Efficiency 11KW 480V Flange Mount

Nanyang YBX3/YBX4 Ex d Flameproof Low Voltage Motor 11kW 480V IE3

Protection: Ex d IIC T4 Gb | Power: 11kW IE3/IE4 | Mounting: B5 Flange
Pharma GMP Certified Low Vibration Exd IIAT4Gb Flameproof Motor GMP Certified for Pharmacy Clean Room Production Line

Low Vibration Exd IIA T4 Gb Flameproof Motor for Pharma Cleanrooms

Standard: GMP Cleanroom Grade | Vibration: Grade A Low Noise | Enclosure: Ex d IIA T4
VFD Variable Speed 160-200kW Flameproof IP55 IE3 Efficiency Variable Frequency Speed-Regulating Three-Phase Asynchronous Motor Ex D IIB T4 50Hz

160kW–200kW Ex d IIB T4 IP55 Variable Frequency Speed-Regulating Motor

Power: 160kW–200kW | Control: Inverter Duty (VFD) | IP Rating: IP55 / IP66
IE3 / IE4 Premium IE3/IE4 ExdIIBT4 Explosion-proof AC Electric Motor Industrial Flame Proof Motor

IE3/IE4 Ex d IIB T4 Industrial Explosion-Proof AC Electric Motor

Efficiency: Premium IE3 / Super Premium IE4 | Gas Group: IIB / IIC | Zone: Zone 1 / Zone 2
High Voltage Ex d Nanyang Explosion-Proof YBX3 Series 355560 250KW IE3 Efficiency 110mm Frame High-Voltage Flameproof Asynchronous Motor

Nanyang YBX3 250kW High-Voltage Flameproof Asynchronous Motor

Output: 250kW | Frame Size: 355-560 | Voltage: 3.3kV / 6kV / 10kV HV Option
CE & EAC Certified CE EAC Certified YBX3-250M-6-37KW Flameproof Electric Motor 50Hz IP55 Protection High Efficiency IE3 for Hazardous Locations

YBX3-250M-6 37kW CE EAC Certified Flameproof Hazardous Location Motor

Power: 37kW (6-Pole) | Certifications: ATEX / CE / EAC | Enclosure: IP55 Heavy Cast Iron

Engineering Principles of Ex d Flameproof Enclosures

Understanding internal explosion containment, flame path tolerance, and thermal dissipating design under EN/IEC 60079-0 & EN/IEC 60079-1 standards.

Pressure-Resistant Containment Architecture

Unlike increased safety (Ex e) or non-sparking (Ex ec) motors, an Ex d flameproof motor is designed under the physical premise that an internal explosion can and will occur if flammable gases penetrate the housing during operational thermal cycling. The cast iron or welded steel structural frame is engineered to withstand hydrostatic overpressures up to 1.5 times the peak explosion pressure (typically exceeding 10 to 12 bar) without permanent deformation or mechanical rupture.

Our custom OEM manufacturing utilizes high-tensile nodular cast iron (GGG40/GGG50) or fabricated heavy steel plates with precision-machined end shields, ensuring absolute structural integrity in hazardous Zone 1 (Category 2G) and Zone 2 (Category 3G) chemical processing sectors.

Precision Flame Path & Flame Gap Engineering

The hallmark of Ex d protection lies in the micro-engineered joint surfaces—known as the flame path (flame gaps). When an internal ignition occurs, burning hot gases are forced out through these tight joint gaps (spigot joints, flat joints, or threaded shaft entries). As the hot gas expands through the labyrinth flame path, its thermal energy is rapidly absorbed by the massive metal structural walls.

By the time the gas reaches the external ambient atmosphere, its temperature drops well below the ignition threshold of surrounding gas groups (IIA, IIB, or IIC like Hydrogen and Acetylene). Our CNC grinding achieves surface roughness below Ra 0.8 µm and maximum gap widths strictly under 0.15 mm to 0.05 mm, compliant with strict European ATEX Directive 2014/34/EU mandates.

Thermal Dissipation & Temperature Classes (T1–T6)

Thermal control is paramount in flameproof motor design. Overheating on the external surface of the motor frame could ignite surrounding explosive airborne vapor or dust. Our Ex d motors are engineered with optimized electromagnetic field geometry, premium-grade vacuum pressure impregnated (VPI) Class H insulation, and high-efficiency external cooling ribs (IC411 or IC511/IC611 heat exchangers).

Whether operating under ambient temperature extremes of -50°C in cryogenic transport or +60°C in desert ambient environments, our motors maintain strict surface temperature compliance ranging from T4 (<135°C) for standard chemical processing down to T6 (<85°C) for specialized pharmaceutical cleanroom applications.

Powering Catalonia's Strategic Industrial & Maritime Hubs

As a major European economic engine, Barcelona and the wider Catalonia region host intense chemical, pharmaceutical, logistics, and marine industries requiring highly specialized explosion-proof electric drive systems.

1. Petrochemical & Bulk Chemical Refineries (Tarragona & Port of Barcelona)

The industrial corridor extending from the Port of Barcelona to the Tarragona Chemical Complex represents Southern Europe’s largest chemical cluster. Facilities operating hydrocarbon crackers, ethylene storage terminals, fuel pumping stations, and gas compression plants require heavy-duty Ex d IIB / Ex d IIC T4 motors operating 24/7 in continuous duty (S1).

Specific Application: Driving high-pressure centrifugal pumps, gas re-liquefaction compressors, and crude oil mixers. Our custom OEM flange dimensions and special shaft extensions allow direct retrofitting of legacy drive units without requiring costly piping or foundation modifications.

2. Pharmaceutical Cleanrooms & Fine Chemical Synthesis (Sant Cugat, Martorell, Vallès)

Catalonia is home to world-leading pharmaceutical manufacturers in the Baix Llobregat and Vallès Occidental belts. These facilities process volatile organic solvents (such as ethanol, acetone, and ether) inside strict GMP-regulated cleanroom environments.

Specific Application: Low-vibration, low-noise flameproof motors (Ex d IIA/IIB T4 Gb) driving cleanroom reactors, centrifuges, fluid bed dryers, and exhaust air extractors. Our motors feature smooth anti-corrosive epoxy surface coatings that resist aggressive chemical cleaning agents while maintaining low acoustic emissions (<68 dB(A)).

3. Maritime, Port Logistics & Offshore Terminals (Port Vell & ZAL Barcelona)

The Port of Barcelona handling LNG bunkering, container shipping, and bulk chemical tankers demands drive equipment capable of withstanding extreme marine salt-spray corrosion combined with explosive gas atmospheres (Zone 1 deck machinery and pump rooms).

Specific Application: Heavy crane hoists, winch drives, dockside cargo unloaders, and ballast water treatment pumps. Equipped with marine-grade IP66 / IP67 sealing, C5-M high-durability epoxy paint systems, and anti-condensation heating elements, our motors resist saline ambient conditions while preventing internal moisture build-up.

4. Green Hydrogen Transition & Renewable Gas Infrastructure

In alignment with Catalonia’s Hydrogen Valley (Vall de l'Hidrogen de Catalunya) initiatives, local industrial parks are expanding green hydrogen production, compression, and distribution networks across the regional gas grid.

Specific Application: Ultra-safe Ex d IIC T4 / T5 flameproof electric motors engineered specifically for Hydrogen gas groups (characterized by low ignition energy and high flame speeds). These motors power high-pressure diaphragm compressors and electrolyzer circulation pumps with zero risk of sparks igniting hydrogen gas leaks.

Navigating EU Directives & Technological Evolution in Spain

Spanish industrial procurement directors face rigorous mandatory efficiency regulations and digital transformation goals. Here is how our OEM Ex d motors lead the market transition.

EU EcoDesign Regulation (EU) 2019/1781 (IE3/IE4 Mandate)

Since July 2023, the European Union strictly enforces Premium Efficiency (IE3) for explosion-proof motors rated from 0.75 kW to 1000 kW, with Super Premium (IE4) recommended for continuous high-load applications. Our Nanyang YBX3 and YBX4 series flameproof motors fully exceed EU EcoDesign standards, reducing facility electricity consumption by up to 4.8% annually while operating significantly cooler than legacy IE1/IE2 drives.

Predictive Maintenance & IIoT Condition Monitoring

Modern industrial plants in Barcelona are rapidly migrating toward Industry 4.0 architecture. We integrate ATEX-certified wireless vibration sensors, PT100 bearing/winding temperature probes, and shaft grounding rings directly into our Ex d terminal boxes and motor frames. This allows plant engineers to monitor real-time thermal spikes, bearing wear, and air gap concentricity remotely without breaching flameproof enclosure seals.

VFD Inverter Optimization & Shaft Voltage Shielding

Driven by energy savings, over 70% of flameproof motors in process industries are operated via Variable Frequency Drives (VFDs). High-frequency PWM voltage spikes from inverters can cause electrical discharge machining (EDM) in motor bearings. Our custom OEM Ex d motors feature insulated bearings, reinforced spike-resistant magnet wire, and special internal shielding to guarantee 100,000+ operating hours under VFD speed regulation.

Explosion Protection Concepts Comparison: Ex d vs. Ex e vs. Ex p vs. Ex ec

Selecting the optimal drive technology for hazardous operational zones in industrial plants.

Protection Type EN/IEC Standard Protection Principle Hazardous Zone Suitability Gas Group Compatibility Primary OEM Advantage
Ex d (Flameproof) EN/IEC 60079-1 Contains internal explosion & quenches internal flame gap Zone 1, Zone 2 (Gas) / Zone 21, 22 (Dust) IIA, IIB, IIC (Hydrogen / Acetylene) Maximum robust protection; no air purging setup required; highly resistant to harsh environments.
Ex e (Increased Safety) EN/IEC 60079-7 Prevents sparks, arcs & excessive temperatures internally Zone 1 (Limited) / Zone 2 IIA, IIB, IIC Lighter frame weight; excellent energy efficiency; suitable for clean pump drives.
Ex p (Pressurized) EN/IEC 60079-2 Maintains positive internal overpressure with clean air/inert gas Zone 1, Zone 2 All Gas & Dust Groups Ideal for large high-voltage motors (>2 MW to 25 MW) where flameproof casting is impractical.
Ex ec (Non-Sparking) EN/IEC 60079-7 Prevents electrical arcs under normal operational conditions Zone 2 Only IIA, IIB, IIC Cost-effective replacement for standard industrial motors in low-risk ambient zones.

Why Global & Spanish Industrial Leaders Partner With Us

Combining nearly a century of German motor manufacturing heritage with flexible OEM custom engineering and rapid dispatch across Western Europe.

100% Mechanical 1:1 Interchangeability & OEM Customization

When a legacy electric motor fails in a high-cost continuous chemical line, replacing it with a off-the-shelf motor often fails due to non-standard shaft diameters, center heights, terminal box positions, or foot mounting hole coordinates. Our engineering team specializes in producing 1:1 exact mechanical replicas for legacy brands (such as historic ABB, Siemens, Baldor, Alstom, or Brook Crompton models). We match your existing footprint precisely so your maintenance crew can swap out the motor without modifying mechanical bases or coupling arrangements.

State-of-the-Art In-House Test Field (Up to 25 MW / 13.8 kV)

Quality and safety are non-negotiable in flameproof environments. Our modern production factory houses one of Europe’s most advanced full-load test fields. Every single custom motor undergoes rigorous routine testing, including routine flame gap verification, dielectric strength tests, temperature rise monitoring, vibration spectrum analysis, and hydrostatic enclosure pressure testing. Customers and independent inspectors (TÜV, Bureau Veritas, DNV) are routinely hosted in our live observation lounges or provided with digital remote video testing logs prior to export dispatch.

Europe's Premier Emergency Motor Stock & Fast Dispatch

Unplanned plant shutdowns cost industrial operators thousands of Euros per hour. We maintain one of Western Europe's largest inventory stocks of large industrial motors—including low voltage and high voltage flameproof motors (YBX3, YBX4, Ex d, Ex p) up to thousands of kilowatts. Our dedicated logistics network guarantees fast express truck shipment directly to Barcelona, Tarragona, Bilbao, Madrid, and port marine terminals across Spain within record timeframe.

Frequently Asked Questions by Local Engineers & Procurement Teams in Spain

Direct technical clarity regarding ATEX certification, installation conditions, custom modifications, and export delivery.

Q1: Do your Ex d motors hold full ATEX Directive 2014/34/EU certification for installation in Spain and the EU?
Yes, absolutely. All of our flameproof motors supplied to Barcelona and EU member states are fully certified under ATEX Directive 2014/34/EU and IECEx international standards by EU Notified Bodies (such as TÜV, DEKRA, or SGS). Each motor comes supplied with its official certificate, CE marking, ATEX nameplate breakdown (e.g., II 2G Ex db IIB T4 Gb), and comprehensive operation and maintenance manuals in English and Spanish.
Q2: What is the difference between Gas Group IIB and IIC Ex d motors, and which do I need for my facility?
Gas Group IIB covers typical industrial gases such as Ethylene, Methane, and Propane common in general refineries and chemical processing plants. Gas Group IIC covers extremely volatile gases with ultra-low ignition energy requirements, specifically Hydrogen (H2) and Acetylene (C2H2). If your facility in Catalonia processes Hydrogen or fine chemical solvents, an Ex d IIC motor is mandatory. An IIC certified motor is fully backwards-compatible and can always be safely used in IIB and IIA environments.
Q3: Can you customize the terminal box location, flange dimensions, and shaft extensions for existing mounts?
Yes. As an expert OEM engineering manufacturer, custom mechanical adaptation is our primary core strength. We can supply top, left, or right-side mounted heavy-duty Ex d terminal boxes, oversized main terminal boxes for high-voltage cables, custom D-flanges, V1 vertical mounting skirts, special cylindrical or tapered shafts, and custom foot-hole dimensions to match your existing foundation plates exactly.
Q4: How do your motors withstand aggressive marine atmospheres in the Port of Barcelona?
For maritime, coastal port, and offshore installations, we apply a specialized multi-coat epoxy polyurethane paint system conforming to ISO 12944 Category C5-M (Very High Marine Corrosion Protection). Furthermore, we equip the motor with 316L stainless steel hardware, internal tropicalized winding insulation, anti-condensation heaters, and double lip viton oil seals rated IP66 or IP67 to completely prevent salt-water ingress.
Q5: Are your Ex d flameproof motors rated for Variable Frequency Drive (VFD) speed control?
Yes. All our Ex d motors can be custom-wound and certified for VFD operation across variable torque (pumps/fans) and constant torque (compressors/extruders) speed ranges. We integrate embedded PTC thermistors inside the stator windings and install insulated bearings on non-drive ends to prevent destructive shaft bearing currents caused by VFD high-frequency switching.
Q6: What are the standard lead times for custom OEM Ex d motors delivered to Catalonia, Spain?
For urgent breakdown situations, we can modify and dispatch stock motors from our central European warehouse within 24 to 72 hours. For custom-manufactured high-power or high-voltage OEM motors built completely from scratch, typical engineering and production lead times range from 4 to 8 weeks depending on frame size, power rating, and specific testing requirements.
Q7: What low-vibration certifications are available for sensitive pharmaceutical cleanroom installations?
Our cleanroom-designated Ex d motors (such as the low-vibration Exd IIA/IIB T4 Gb series) undergo dynamic precision balancing of the rotor assembly to Grade A or Grade R (ISO 21940-11). This ensures mechanical vibration velocity levels remain well below 0.71 mm/s, protecting cleanroom sterile air balances, delicate centrifuges, and nearby analytical measurement equipment.
Q8: How do I submit an inquiry or technical drawing for a quotation?
Simply click on the Send an Inquiry button on any product card or bottom CTA band. You can share your motor rating plate photograph, target power/voltage specs, ambient conditions, and ATEX protection class requirements. Our technical sales engineers will review your request and issue a detailed technical proposal and quotation within 24 hours.
Custom OEM Engineering Support

Require a Custom Ex d Flameproof Motor or Urgent Replacement in Barcelona?

Our specialized senior drive engineers are available to review your technical specs, mechanical dimensional drawings, or factory rating plates. We provide engineered solutions tailored precisely to your operational requirements.