Pfisterer CONNEX

Pfisterer Stockist & Distributor

PFISTERER are the world’s largest independent manufacturer of High Voltage Cable Accessories - this includes joints, terminations and connectors for 11kV/33kV/66kV medium / high voltage cables.

Thorne & Derrick are Pfisterer Stockists distributing their ranges of CONNEX Terminations, SICON Shearbolt Connectors, Electrical Safety Equipment & MV HV Cable Accessories. 


Maximum Efficiency, Safety & Reliability For Power Supply 


T&D distribute Pfisterer CONNEX Connectors for medium and high voltage cable connection and termination to gas insulated switchgear.


CONNEX Size 0 24kV 250A 
CONNEX Size 1 33kV 630A 
CONNEX Size 2 33kV 800A 
CONNEX Size 3 33kV 1250A 
CONNEX Size 3s 52kV 1250A 



Pfisterer CONNEX

T&D distribute Electrical Safety Equipment protecting workers on underground cables, overhead powerlines, switchgear and substations at LV, MV, HV and EHV up to 400kV.


Voltage Detectors

Insulating Poles

Phase Comparators

Earthing & Short Circuiting




Electrical Safety 11kV 33kV 66kV

Pfisterer Sicon mechanical shearbolt cable connectors and lugs are suitable for the connection and jointing of all LV, MV and HV cables, including 11kV/33kV up to 66kV.


All Sicon stepless connectors are easily installed - the bolt shears-off smoothly when tightened by the jointer.


Shearbolt Lugs | Connectors



Pfisterer Sicon

For further information about course content, location, duration and costings please go to Pfisterer Training Courses.


Thorne & Derrick can support all your LV MV HV Jointer Training course requirements up to 66kV - just call 0191 4104292.


I'm A 4 Day Jointer!


Pfisterer CONNEX Size 4 | HV High Voltage Cable Jointer Training


Pfisterer Training Courses for jointing contractors needing manufacturer issued Competency Certification when working on the termination of high voltage cables, both onshore and offshore, using CONNEX products.



Pfisterer Training
Cable Jointers Blog LV MV HV EHV
Joints Terminations Connectors 11kV 33kV
Cable Jointers LV MV HV 11kV 33kV

Thorne & Derrick supply 3M Electrical, Prysmian, Filoform and SPS low voltage cable joints suitable for connecting and jointing single and multi-core/pair power, control and instrumentation cables up to 600/1000V (3.3kV) in industrial and hazardous area locations.


Specialist applications include fire resistant, low smoke zero halogen, hydrocarbon resistant and utility cable joints utilising Cold Shrink or Scotchcast resins.

LV Cable Joints - Cold Shrink, Heat Shrink & Resin

Heat shrink, cold shrink, push-on and slip-over cable accessories enable the jointing, terminating and connection of 11kV-33kV and 66kV-132kV cables to oil, air or gas insulated switchgear, transformers, motors and overhead lines distributing electricity at medium/high voltages.


Stockists of separable connectors including Pfisterer CONNEX and Nexans Euromold for inner or outer cone cable termination.

HV Cable Joints, Terminations & Connectors

Arc flash clothing and protection equipment including coveralls, gloves, helmets, face shields, insulating gloves and general head-to-toe PPE is used to protect against flashover. 


Contact us to discuss and calculate your arc flash protective clothing requirements.


Arc Flash Helmets

Insulating Boots


BLOG : Can Arc Flash Clothing Save Utility Workers Lives?



Arc Flash Clothing, PPE & Flash Protection Kits

A complete range of cable cleats manufactured by Ellis Patents used to clamp and retain low, medium and high voltage cables in the event of a short circuit, including 11kV/33kV MV-HV power cables – single, trefoil, quadrofoil and multiple bundled cable cleat configurations.


LV MV HV EHV Cable Cleats


BLOG : IEC 61914 – Cable Cleats & Short Circuit Protection Calculations



Cable Cleats

The complete range of electrical connectors for jointing and terminating cables and connecting conductors into low, medium and high voltage switchgear, control panels and transformers using compression (crimping) or mechanical shearbolt (“snap-off”) type cable lugs and connectors.


BLOG : BS7609 | Crimping Cables With Cembre Cable Lugs & Tools

Cable Crimps, Lugs & Connectors

Cable cutting tools to suit LV-HV cables with copper or aluminium conductors, steel wire armoured (SWA) / braided cables with lead sheath and insulation types including XLPE, EPR and paper types – commonly used to cut armoured LV cables and medium/high voltage power cables 11kV-33kV, single and 3 core type.


Cable crimping tools using hydraulic or battery operated to crimp conductors 1.5sqmm-1000sqmm suit aluminium and copper conductors with sector shaped, stranded or solid cores.

Cable Cutting & Crimping Tools

Cable jointing tools for stripping and preparing low, medium and high voltage power cables including 11kV, 33kV, 66kV and 132kV-400kV polymeric cables with XLPE or EPR insulation and bonded/peelable semi-conductive cable screens.





T&D distribute Cable Jointing Tools from leading manufacturers including Alroc, Ripley, Boddingtons and Hivotec for all types of LV, MV or HV cable stripping, preparation and jointing requirements – insulated tools are available for live-working on low voltage cables, joints and electrical equipment up to 1,000v.

Cable Jointing Tools

Cable protection covers, tile tapes and underground warning tapes are installed over LV, MV and HV power cables in trench and ducted cable installations with high visibility colour providing a visual warning of danger when excavating cables.


11kV and 33kV cable protection tapes (Tapetile and Stokbord covers) are manufactured from heavy duty plastic for reliable protection.


Underground protective covers are used to provide a clear and effective visual warning to the presence of LV-HV underground cables, cable duct or high voltage cable joints.


BLOG : Tape Tile & Stokbord Cable Protection Covers For MV HV Power Cables

Cable Protection Covers

Thorne & Derrick distribute the most extensive range of Cable Pulling & Cable Laying Equipment to enable the installation of low, medium and high voltage power cables into underground trench or duct. 


Cable Rollers | Socks | Duct Rods | Jacks | Lubricant

Cable Pulling & Cable Laying

T&D distribute proven cable duct sealing products from leading manufacturers CSD Sealing Systems and Filoform with widespread utility approvals and industry acceptance as trusted alternatives to traditional “sticky and tricky” to install mastic seals or regulation violating expanding foams.





Duct Seals & Cable Sealing

Cable Transits manufactured by Roxtec to provide effective sealing of single and multiple low and high voltage cables and ducts against constant water pressure, fire spread and gas migration.


Extensively specified in the Utility Power, Transmission & Distribution sectors for sealing cable ducts and protecting 11kV/33kV medium/high voltage substations against flood risk.

Cable Transits

Earthing & Lightning Protection products including bare and covered copper earth tapes to provide effective earthing protection to LV, MV & HV substations, buildings and electrical infrastructure supported by a complete range of earthing products such as earth rods, plates and lattice or solid type copper earth mats.


BLOG: Earthing System Design Services 

Earthing & Lighting Protection

T&D supply both standard and bespoke feeder pillars in a selection of materials, paint finishes and dimensions to meet all indoor and exterior power distribution, control and lighting requirements up to 1,000 volts with IP65 door seal – this includes LV substation and network pillars with DNO supply cut-outs for utility applications.


Feeder Pillars

Non-radial, rough and jagged semicon screens with protuding points at the cutback will cause termination or joint FAILURE.




See our range of Jointing Tools including fully bonded and peelable ("easy strip") semicon screen removers


Also : MV Heat Shrink Cable Terminations Can Fail Despite Passing VLF Tests

Cable Jonting Tools 11kV

See our CSD & Filoform Cable Duct Seal Systems for the reliable sealing of LV MV HV ducts against water, gas, fire and rodents. 


Check out our Application Cases here:


LV Control Cable Sealing

LV Single Core Cable Sealing

HV Trefoil & 11kV Triplex Seals

132kV Switch Hall

Rats & Rodents & Substations


BLOG : Sealing Cable Ducts In Hazardous Area Locations According To ATEX Directive

Duct Seals

In this BLOG we discuss to processes and Furse products used for the Earthing of electricity substations with site installation photographs from an EHV 275kV substation earthing project.

Utility Showcase
LV MV HV Substations
Cable Ploughing MV HV 11kV 33kV

The following sequence of photographs provide a behind the scenes glimpse of Cable Splicer Training at the Quanta Services Lazy Q Ranch, a state-of-the-art facility where the Art & Craft of Cable Splicing is alive and kicking.


Cable Splicing At The Lazy Q


PILC - Cable Longevity


Cold Shrink Splicer Training


“You’re Just A Cable Splicer!”


“You’re Still Just A Splicer!”


Special thanks to James Craven & John Perez - Quanta Services.

More Info

BASEC are collaborating on knowledge and content sharing with Thorne & Derrick.


With a shared passion and ambition to enhance LV MV HV electrical safety by the education of industry stakeholders to specify and buy accredited, tested and certified Quality Cables & Cable Accessories.

The following article has been republished with kind permission of Martha Davis (Senior Director of Content – T&D World and Utility Analytics Institute) from Transmission & Distribution World and their video sponsor Burns & McDonnell.


The 5 Videos videos are real-life and shot-on-site, showing transmission and distribution crews and splicers at work.

Special Guest Feature
More Info
Cable Terminations | Heat Shrink Terminations MV HV Cables Cable Joints | Heat Shrink Joints MV HV Transition Cable Joint
Cable Joints | Heat Shrink Joints MV HV Straight Cable Joint Separable Connectors | Tee Connector (Elbow) MV HV Cable Connectors
Cable Joints | Cold Shrink Joints MV HV Straight Cable Joint Cable Terminations | Cold Shrink Terminations MV HV Cables
Duct Seals Cable Jointing Tools

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Thorne & Derrick are specialist distributors of LV, MV & HV Cable Installation, Jointing, Earthing, Substation & Electrical Eqpt – servicing UK and global businesses involved in cable installations, jointing, substation, overhead line and electrical construction at LV, 11kV, 33kV and EHV.

Product Categories: Duct Seals | Cable Cleats | Cable Glands | Electrical Safety | Arc Flash Clothing & Protection | Cable Jointing Tools | Cable Pulling & Laying | Earthing | Feeder Pillars | Cable Joints  LVJoints & Terminations MV HV | Cable Transits | Fuses MV HV | Cold Shrink