66kV Junction Boxes & Electrical Enclosures


66kV Junction Boxes & Electrical Enclosures

66kv junction box | junction box & enclosure

Product Reference Range: 6SJB883 0-2

The 66kV High Voltage Enclosure is designed for harsh offshore and marine environments, supporting applications such as wind farms and offshore platforms. It houses compact, highly insulated tee connectors rated up to 72.5kV and provides full protection against partial discharge, with 100% AC withstand fault testing for proven reliability.

Built from 2mm 316L stainless steel with 3mm gland plates and a silicone gasket, the enclosure meets IP66/67 and DTS-01 deluge standards. For more options in robust electrical protection, see our range of HV enclosures and junction boxes.

SEE TECHNICAL SPECIFICATIONS



66kv junction box & enclosures Overview

The 66kV high-voltage enclosure is engineered for demanding offshore and hazardous environments, supporting increased voltage requirements such as those found in wind farms and offshore platforms. Designed for compact, highly insulated tee connectors up to 72.5kV, it accommodates multiple conductors and ensures full protection against partial discharge, with proven reliability through 100% AC withstand testing.

Contact our experienced team to discuss your requirements or request a quotation for the 66kV Junction Boxes & Enclosures. Thorne & Derrick International, based in the UK, are trusted suppliers providing expert technical advice and worldwide delivery.

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 Technical Specifications

Specifications
Enclosure Type Stainless Steel High Voltage Enclosure
Maximum Voltage up to 72.5 kV
Maximum Current 1250 A
Impact Resistance >7Nm
Ingress Protection IP66/67 to EN60529, DTS-01
Material 2mm 316L (EN 1.4404) Stainless Steel enclosure, silicone gasket and captive 316 stainless steel fasteners, 3mm 316L (EN 1.4404) Stainless Steel gland plates. HV Connector manufactured from EPDM for operational reliability.
Ambient Temp Rating -50°C to +55°C
Maximum Terminations 4 conductors per phase in & 4 conductors out
Cable Size Up to 1200mm²
Earthing Via studs on enclosure, base and gland plates
Mounting Via 3mm thick external straps, slotted upper strap for ease of installation. Plinth stand optional.
Termination Built-in semi-conductive screen removes the need for a termination kit and eliminates partial discharge.
Installation Separate compartments allowing topside and subsea connections to be made independently

Key junction box & enclosure Benefits

✔ Heavy-duty 2mm 316L stainless-steel enclosure with 3mm stainless-steel gland plates
✔ Rated up to 66kV (72.5kV maximum) with compact, highly insulated tee connectors
✔ Fully tested for 100% AC withstand and complete protection against partial discharge
✔ DTS-01 deluge tested / IP66–IP67 environmental protection
✔ Suitable for offshore hazardous locations with Ex-rated version available
✔ Supports cable sizes up to 1200mm² with up to four conductors per phase in and out
✔ Features separate, lockable compartments for independent subsea and topside terminations
✔ Designed for demanding offshore wind, marine, and platform applications requiring high-voltage distribution

66kV Junction Boxes

junction box — Part References & Dimensions

 

Junction Box — Part Reference Table
Product Reference* Width (mm) Height (mm) Depth (mm) Maximum Voltage (kV) Maximum Current (A)** Max Ways Max No. Conductors per Way Weight (kg)
6SJB883 0-2 800 1250 800 66 (72.5 max) 1250 4 1200 176
Note: See Datasheet for 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.

Abtech

ABTECH - High Voltage Enclosures & Junction Boxes

Data Sheets