Explosion Proof Enclosures
Kaixuan KX-EX09CBJ41-A Explosion Proof Enclosure
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The BARTEC EJB51-UL is a heavy-duty, explosion-proof junction and control enclosure engineered from marine-grade copper-free aluminum for Class I, Division 1 / Groups B, C, D and ATEX/IECEx Zone 1 hazardous environments. Featuring IP66 and NEMA Type 4X ratings, it provides robust, reliable protection for electrical distribution, terminal wiring, and control instrumentation across demanding offshore and onshore oil & gas facilities.
| Country of Origin | Italy (IT) |
| Certifications | Class I, Div 1 & 2, Groups B, C, D Class II, Div 1 & 2, Groups E, F, G; Class III |
The BARTEC EJB51-UL is an explosion-proof and flameproof terminal, control, and distribution enclosure engineered specifically for severe industrial environments and hazardous classified locations. Constructed from marine-grade, copper-free aluminum alloy, the EJB51-UL prevents internal ignition sources from igniting surrounding flammable atmospheres, making it an indispensable solution for offshore drilling rigs, refineries, gas processing plants, and chemical handling operations.
Designed for field flexibility and long-term mechanical reliability, the EJB51-UL supports high-density component layouts, multi-conductor terminal strips, and custom operator interface openings on the enclosure cover. Outfitted with an integrated silicone rubber O-ring gasket, stainless steel cover bolts, and pre-fitted galvanized steel mounting stirrups, it ensures fast installation, low maintenance, and continuous protection against corrosive salt air, washdown spray, and extreme dust ingress.
✅ Class I, Div 1 & 2, Groups B, C, D; Class II, Div 1 & 2, Groups E, F, G; Class III (UL 1203)
✅ ATEX & IECEx Zone 1/21 certified (Ex db IIB+H2 Gb / Ex tb IIIC Db)
✅ Ingress Protection: IP66 & UL Type 1, 4, 4X weather-proof & dust-tight construction
✅ Marine-grade copper-free aluminum light alloy body and cover
✅ High terminal capacity: Up to 50x2 (2.5 sq mm) or 46x2 (6.0 sq mm) wiring blocks
✅ Factory or field-drilled conduit entries up to 4" / M90 with wide drilling face areas
✅ Removable galvanized steel or aluminum internal mounting plate included
✅ Stainless steel internal and external hardware and dedicated internal grounding screw (M6x10)
✅ Wide operating temperature: -25°C to +60°C (UL) / -55°C to +60°C (USC/CNC) / -60°C to +80°C (ATEX)
🔹 Standard EJB51-UL: Copper-free aluminum enclosure with standard untreated finish and mounting stirrups
🔹 External Epoxy Painted: Custom finish with high-durability epoxy coating (any standard RAL color)
🔹 Anticondensate Coated: Interior coated with orange RAL-2004 anticondensate protective lining
🔹 Breather & Drain Fitted: Factory-machined and installed explosion-proof drain and breather valves
| Feature | Details |
|---|---|
| Model | BARTEC EJB51-UL |
| Enclosure Material | Marine-grade copper-free aluminum light alloy |
| External Dimensions (A x B x C) | 600 x 400 x 266 mm (23.70" x 16.80" x 10.50") |
| Overall Depth with Cover (D) | 278 mm (11.00") |
| Internal Usable Dimensions (H x I x G) | 481 x 281 x 195 mm (19.00" x 11.10" x 7.70") |
| Internal Plate Size (X - Y) | 460 x 260 mm (18.20" x 10.30") |
| Mounting Hole Spacing (E) | 360 mm (14.20") |
| Mounting Stirrup Thickness | 10 mm galvanized steel |
| Enclosure Weight | 52.50 kg (121.00 lbs) |
| NEC / CEC Approvals (US & Canada) | Class I, Div 1 & 2, Groups B, C, D Class II, Div 1 & 2, Groups E, F, G; Class III |
| Zone Classifications (USC / CNC) | Class I, Zone 1, AEx d IIB+H2 Gb; Zone 21, AEx tb IIIC Db |
| ATEX / IECEx Approvals | II 2G Ex db IIB or IIB+H2 T6...T3 Gb; II 2D Ex tb IIIC T85°C...T200°C |
| Ingress Protection & Type Ratings | IP66; NEMA / UL Type 1, 4, 4X |
| Ambient Operating Temperature | -25°C to +60°C (UL NEC) -55°C to +60°C (USC/CNC Zone) -60°C to +80°C (ATEX) |
| Hardware & Fasteners | Stainless steel internal and external screws |
| Gasket Seal | Silicone rubber O-ring fitted on cover |
| Grounding | Internal hex head screw M6x10 with lock/flat washer; external green terminal |
| Conduit Entry Capacities (Walls) | 1/2" (M20) through 4" (NPT); Side wall entry area: 450 x 120 mm / 250 x 120 mm |
| Operator Drilling Area (Cover) | 460 x 260 mm (18.20" x 10.30") |
| Terminal Capacity (Indicative) | Up to 50x2 (2.5 mm²), 46x2 (6 mm²), 36x2 (10 mm²), 30x2 (16 mm²), 22x2 (35 mm²) |
🔗 UL Certification – Explosion-Proof & Dust-Ignition-Proof for Hazardous Locations (Ref: E344596)
🔗 Class I, Zone 1 AEx d IIB+H2 Gb / Zone 21 AEx tb IIIC Db IP66 (USC & CNC / FTQH / FTQH7)
🔗 ATEX Certificate – Directive 2014/34/EU II 2G Ex db IIB+H2 / II 2D Ex tb IIIC
🔗 IECEx INE 13_0070X – International explosive atmosphere compliance
🔗 Download Datasheet
🔹 Oil & Gas (Upstream Rigs, FPSOs, Refineries, Gathering Stations)
🔹 Chemical Plants & Petrochemical Processing Facilities
🔹 Mining Operations & Bulk Material Handling
🔹 Hazardous Material Testing & Pilot Labs
🔹 Paint & Industrial Coating Manufacturing
📦 1x BARTEC EJB51-UL Explosion-Proof Aluminum Enclosure Body & Cover
📦 1x Internal Mounting Plate (Galvanized Steel / Aluminum, 460 x 260 mm)
📦 1x Set of Galvanized Steel Mounting Stirrups (10 mm thk.)
📦 1x High-Integrity Silicone O-Ring Seal
📦 1x Internal Grounding Screw Assembly (M6x10 Stainless Steel)
📦 1x Complete Set of Stainless Steel Enclosure Fixing Screws
📦 1x Installation & Field Drilling Guideline Kit
📦 Lead Time: 6 - 8 weeks
📍 Shipping Terms: Worldwide Freight / Expedited Options Available
💳 Payment Options: Credit Card, Wire Transfer, Net 30 Terms Available for Approved Accounts
🔗 BARTEC EJB-ULX Stainless Steel AISI-316L Explosion-Proof Enclosures
🔗 BARTEC Hazardous Location Drain & Breather Valves
🔗 BARTEC EJB Series Heavy-Duty Stainless Steel Hinges
What is the difference between the EJB51-UL and the EJB51-ULX?
The EJB51-UL is constructed from a marine-grade, copper-free aluminum alloy offering high mechanical strength at a reduced weight (approx. 52.5 kg / 121 lbs). The EJB51-ULX is constructed from AISI-316L stainless steel for maximum corrosion resistance in highly acidic or extreme chemical settings (weighing 172 kg / 379 lbs).
Does the EJB51-UL enclosure support hydrogen atmospheres (Group B)?
Yes, under NEC 500 standards, it is certified for Class I, Group B hazardous locations when provided with supply connection openings ranging from 1/2" up to 3" (M20 to M90). For Zone classifications, it carries Ex db IIB+H2 Gb / AEx d IIB+H2 Gb ratings.
Can push buttons or pilot lights be installed on the cover?
Yes, the cover has an allocated drilling area of 460 x 260 mm (18.20" x 10.30") suitable for 1/2 in. NPSM operator openings and indicator components in accordance with factory guidelines.
Are hinges included as standard with the enclosure?
Hinges are not included in the standard supply, but optional stainless steel AISI-316L heavy-duty hinges can be specified upon request for service access.
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