High Power Current Junction Box | 3KA (3000AMPS)
High Power Junction Box| High Voltage Junction Box Enclosure
Product Reference Range: EBBB1A4GPAC, EBBB2A4GPAC, EBBB3A4GPAC, EBBB4A4GPAC
The High Power Junction Box with SX busbar system is designed to safely distribute high-voltage power with high current loadings in Zone 1 & 21 hazardous areas. Engineered for demanding power distribution applications, the enclosure accommodates large conductors and busbar configurations suitable for medium and high-voltage systems, with current ratings of up to 3000A, ensuring reliable performance in critical electrical installations.
ABTECH’s high power junction boxes and electrical enclosures provide dependable solutions for medium and high-voltage installations, supporting applications up to 45kV. Suitable for 11kV and 33kV systems, these enclosures are certified for Zone 1 & 21 hazardous areas, combining robust, corrosion-resistant construction with flexible internal layouts and versatile mounting options for both indoor and outdoor environments.
GO TO DOWNLOADShigh voltage BusBar Box Overview
This SX Busbar enclosure is designed to safely distribute high-voltage power with extreme current loadings in Zone 1 & 21 gas and dust hazardous areas. The enclosure is engineered to accommodate high-capacity busbar systems and large conductors, supporting demanding power distribution requirements with typical maximum current ratings of up to 3000A.
Features include DTS-01 deluge testing, heavy-duty machined hinges with a lift-off padlockable cover, and robust 2mm 316L stainless-steel construction for long-term corrosion resistance. The enclosure is supplied with external heavy-duty 3mm angle frames for mounting and is fully certified for Zone 1 & 21 hazardous areas, with ATEX and IECEx certification provided to ensure safe operation in harsh industrial, offshore, and outdoor environments.
Contact our experienced team to discuss your requirements or request a quotation for the SX BusBar Box. Thorne & Derrick International, based in the UK, are trusted suppliers providing expert technical advice and worldwide delivery.
Technical Specifications
Key BusBar Box Benefits
✔ Up to 3000 A high-current busbar termination enclosure for medium-voltage systems (up to ~5 kV)
✔ 316L stainless steel construction, IP66 / Type 4X rated and DTS-01 deluge tested
✔ Certified for Zone 1 & 21 hazardous atmospheres (ATEX/IECEx)
✔ Accepts up to five conductors per phase + neutral (bottom or top entry)
✔ Flexible tiered busbar arrangement for larger, inflexible conductors
✔ Wide ambient temperature range (approx. −50 °C to +90 °C)
sx BusBar Box — Part References & Dimensions
abtech
Thorne & Derrick are a specialist distributor of ABTECH hazardous area enclosures and HV junction boxes, providing expert technical support, competitive pricing and fast worldwide delivery across the full ABTECH product portfolio.
The ABTECH HVJB, ABJB and 4TJB product ranges include specialist 11kV and 33kV high-voltage junction boxes, designed for safe power distribution in Zone 1 and Zone 21 hazardous areas. These stainless-steel enclosures support applications such as power transmission, umbilical systems, pumps, instrumentation and control circuits. All products are certified to ATEX, IECEx and UKCA standards to ensure compliant installation in potentially explosive atmospheres.
Each product range supports specific use cases, from 11kV and 33kV industrial distribution through to 66kV grid infrastructure, high-current busbar systems up to 3000A and submersible or fibre-integrated enclosures for offshore and specialist applications. Direct links are provided to detailed product pages for full technical specifications and compliance information.
| Voltage Range | Typical Applications | Enclosure Type | Product Range |
|---|---|---|---|
| 11kV – 33kV | Power generation, industrial distribution, utilities, hazardous areas | 11kV & 33kV HV Junction Boxes |  |
| These high-voltage electrical enclosures provide secure termination and interconnection of medium-to-high voltage cables while maintaining electrical safety, ingress protection and long-term durability in harsh operating environments. | |||
| 11kV | Modular power distribution & busbar segregation | HV High-Voltage Busbar Box |  |
| Designed for high-current power distribution where multiple feeders or connections are required within a compact enclosure. These solutions support controlled power routing, fault containment and efficient maintenance access in substations and industrial facilities. | |||
| 66kV | Grid infrastructure, substations, renewable energy transmission | 66kV HV Junction Boxes |  |
| 66kV junction boxes are engineered for high-voltage transmission and grid-level applications, offering enhanced insulation, creepage distances and fault ratings. These enclosures are commonly used in substations, renewable energy projects and critical infrastructure. |
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| Subsea / Submersible | Offshore energy, marine systems, subsea cable termination | Submersible HV Electrical Enclosures |  |
| Submersible electrical enclosures are designed for underwater and subsea cable termination, offering long-term sealing, corrosion resistance and pressure tolerance. These solutions are ideal for offshore energy, marine infrastructure and subsea power distribution systems. |
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| Fibre Optic Integration | Data transmission, monitoring, control & communications | Fibre Optic Termination Enclosures |  |
| Fibre optic termination enclosures provide secure housing for optical fibre connections within HV and industrial networks. These enclosures protect sensitive fibre systems while supporting data, monitoring and communication integration alongside power infrastructure. |
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High Power Junction Box SX BusBar – DatasheetDownload
