CMP have developed a new quad cable cleats range that have been designed, constructed, tested and third party certified in accordance with IEC 61914:2015.
Cable cleats within the quad range manufactured by CMP are designed for a variety of industries including the data centre, energy, utility and rail market where high performance and a compact design of cable cleat is critical for the retention of cables in quadrafoil formation in the event of a short circuit fault situation.
‘Saturn’ quad cable cleats are designed to safely restrain single cables in quad (or quadrafoil) formation without sustaining damage to the cables or cable management system in the event of short circuit fault conditions.
Single Cables In Quad Formation
For quadruplex cable, CMP has developed the QPSS cable cleat, with an integrated C-Clamp and bolt, which provides installers with versatility of installation.
The QPSS type of cable cleat has a high short circuit rating of 135kA and can be installed in a range of applications where quadruplex cable is utilised, including data centres.
Combined Quadruplex Cables | CMP Cable Cleats
For further information on CMP Saturn QSDSS and the CMP Quadplex QPSS Metal Cable Cleats please click the links.
LV, MV & HV Jointing, Earthing, Substation & Electrical Eqpt
Thorne & Derrick International are specialist distributors of LV, MV & HV Cable Installation, Jointing, Duct Sealing, Substation & Electrical Equipment – servicing UK and global businesses involved in cable installations, cable jointing, substation, overhead line and electrical construction at LV, 11kV, 33kV and EHV.
THORNE & DERRICK Product Categories: Duct Seals | Cable Cleats | Cable Glands | Electrical Safety | Arc Flash Protection | Cable Jointing Tools | Cable Pulling | Earthing | Feeder Pillars | Cable Joints LV | Joints & Terminations MV HV
uploaded by Chris Dodds - Thorne & Derrick Sales & Marketing Manager
Thorne & Derrick International hold the largest UK stocks of Scotchcast resin cable joints including hazardous area ranges for cable jointing power, control and instrumentation cables manufactured by 3M Electrical.
An expert from 3M Electrical details the situations where 3M Hazardous Area Scotchcast Resin Cable Joints would be specified.
3M Scotchcast Hazardous Area joint kits include the new flame-retardant, hydrocarbon-resistant, halogen-free 1402FR resin packs.
3M Scotchcast Hazardous Area cable joint kits are designed for use with both single-core and multi-core armoured power cables up to 3.3kV – this new 3M product features a unique hinged mould body and totally enclosed mixing system which is suitable for use in areas of high soil contamination and ATEX rated hazardous areas.
Read our Blog about jointing offshore cables located in hazardous areas using 3M Electrical cable joints.
The 3M Scotchcast LVI-3/x range replaces the traditional Scotchcast LR range of cable joints and is designed for use with both Cembre type copper through connectors (compression splices) or mechanical shearbolt connectors, the two smallest 3M joints LVI-3/2C and LVI-3/3C being supplied with mechanical connectors to suit multi-core cables.
3M Electrical Cable Joints – for conductor jointing either Cembre (Crimp) or Pfisterer Sicon (Mechanical) style connectors can be used depending on application and Jointer preferences.
Although cable joints are not formally certified according to ATEX there are several minimum specification and performance requirements for cable joints when being used to connect, repair or joint cables in hazardous areas.
For example 3M LVI-3 type cable joints include specially formulated 3M Scotchcast 1402FR resin – this cable jointing resin is hydro carbon resistant, flame retardant, halogen free and chemical resistant for use in hazardous area locations.
Installing Hazardous Area Cable Joints Using 3M Scotchcast Resin Jointing Kits
Watch 3M Video
Cable Accessories & Electrical Equipment – ATEX Certified For Hazardous Areas
Thorne & Derrick stock and distribute LV Joints in Cold Shrink, Heat Shrink or Resin Cast technologies – multicore and multi-pair cable joints are available for immediate backfill and energisation of Low Voltage power, control and instrumentation cables 600V/1000V 3.3kV on both safe “non-hazardous” area and designated hazardous areas with potentially explosive atmospheres. Complete range of MV & HV Joints and Terminations are available for safe installation in explosive atmosphere locations using Cold Shrink are available from stock.
Complete range of LV Cable Accessories ➡
Cable Breakouts | Cable Caps | Cable Lugs | Cable Cleats | Cable Trough | Cable Duct | Feeder Pillars | for 11kV/33kV/66kV networks see MV HV Joints & Terminations
Pfisterer | Nexans Euromold | Prysmian | Cable Joints & Terminations MV HV
Cold Shrink by 3M | Joints | Abandonment | Terminations | Low Voltage LV Cables
uploaded by Chris Dodds - Thorne & Derrick Sales & Marketing Manager
Live Line Working Tools – LV Cable Jointers Tools
Electrical Safety Equipment
The CATU Electrical range of insulated tools comply with the NF EN 60900 and IEC 60900 standards – these insulated tools are used by cable jointers and electrical engineers for live working and jointing cables up to 1000 volts.
CATU insulated hand tools are dielectrically tested to 10,000 volts AC by electrical testing and severe mechanical tests including impact tests, tearing tests and puncture tests to meet these standards and are for working live at nominal voltages up to 1kV AC and 1.5kV DC.
Contact us with your Sales Enquiries for the following product ranges – we stock and distribute the most extensive range of IEC 60900 insulated tools:
CATU Tools
♦ Live Working Tools – Hand Tools For Use Up To 1000 V AC and 1 500 V DC
CATU Isomil insulated tools for live working cover all electricians and cable jointers requirements. Insulated tools are used by live working cable jointers on utility cables during connection, disconnection and cable fault repair of PILC, Consac, Waveform and XLPE SWA low voltage cables, 415V-600V.
From stock Thorne & Derrick can also supply complete LV Jointers Tool Sets and Jointers Tents to provide weather protection for utility workers carrying out maintenance, repair or installation services to both de-energised or energised power systems – for overhead line and pole working on cables and conductors we can supply a selection of insulating ladders compliant with EN 131 safety standards.
from CATU Electrical
CATU Electrical Safety Equipment protects Senior Authorised Persons (SAP’s), Linesmen, Cable Jointers and Electrical Engineers during electrical construction and maintenance work on underground cables and overhead lines – typical applications include LV-HV cable jointing, fuse pulling, racking circuit breakers, electrical switching and live working.
For instance, insulating gloves offer personal protection against electrocution – durable, flexible, high dielectric and mechanical strength insulating gloves from 500V – 33kV.
The CATU MO-180-ARC is part of our range of arc flash helmets which is comfortable and safe when in use with insulating protection of the shell, shockproof for the head and eye and face protection againstof thermal effect. Easy to use – taking only 3 Seconds To Install.
Arc Flash Safety Helmet with Integrated Face Shield – CATU MO-180-ARC4
Pfisterer | Nexans Euromold | Prysmian | Cable Joints & Terminations MV HV
Heat Shrink Wraparound Cable Sheath Repair & Jacketing Sleeves – 3M HDCW
uploaded by Chris Dodds - Thorne & Derrick Sales & Marketing Manager
3M HDCW series heat shrinkable wraparound sleeve kits are suitable for cable sheath repair and jacketing sleeves – this includes heat shrink cable repair, Cold Shrink cable repair, 3M Scotch electrical tape and insulating resin based repair solutions using Scotchcast products for low and high voltage cables.
The cable repair sleeves are suitable for use with cable joints and as an additional corrosion protection on undamaged cables.
Thorne & Derrick supply the mining industry with 3M Heat Shrink Cable Repair Kits to re-instate cable insulation to damaged low and high voltage cable sheaths caused by mechanical stress, third party accident or cable corrosion in underground damp mining cable installations.
Image: International Banker
3M Wraparound Heat Shrink Cable Repair sleeves are designed to quickly repair damaged cable jacketing. They are also suitable for use with cable joints and as additional corrosion protection on undamaged cables in hazardous, harsh and extreme operating environments in underground or surface mining applications.
3M HDCW is made from modified cross-linked polyolefin with a hot-melt adhesive coated to the inner side of the sleeve. Upon heating, the sleeve shrinks and the adhesive melts, thereby achieving a safe and watertight bond between the sleeve and the cable.
A corrosion proof metal clip is then used to fully close the heat shrink sleeve.
3M HDCW wraparound heat shrink cable repair sleeves are designed to quickly repair damaged cable jacketing – they can also be used to rejacket in-line cable splices.
HDCW wrap sleeves can be used as insulation material on cable and splices up to 1000 volts and as jacket repair material on cable up to 35kV. 3M HDCW is made from modified cross-linked polyolefin with a hot-melt adhesive coated to the inner side of the sleeve.
The design of the heat shrink wrap style sleeve allows it to be installed in tight spaces with ordinary heating equipment such as a heat shrink torch.
Thorne & Derrick International are the UK’s largest stockist of 3M Electrical Cable Accessories.
Cable Repair Solutions: Mining cable repair kits are available for BS6708 underground mining cables including – Type 11, Type 7, Type 7S, Type 7M, Type 307, Type 307S, Type 307M Flexible trailing cables for use with coalcutters and similar face equipment, Type 211, Type 201, Type 62, Type 63, Type 64, Type 321, Type 331 Flexibile trailing cables with galvanised steel wire pliable wire armouring for use as mine extension cables in quarries and coalface lighting.
3M HDCW Wraparound Heat Shrink Cable Repair Sleeve Features & Benefits
How to Install Wraparound Repair Sleeves
Cable Repair Sleeves – Installation
| 3M Cable Repair Kit Part Number | Length Inches (Metres) | Primary Insulation 600/1000V Conductor Size AWG/MCM | Jacket Repair Use Range max./min inches (mm) | Sleeve Dimensions | |
| Expanded Diameter inches (mm) | Recovered Diameter inches (mm) | ||||
| HDCW 35/10-250 HDCW 35/10-1200 |
9.8 (250) 47.2 (1200) |
#8-2/0 #8-2/0 |
1.38-0.39 (35-10) 1.38-0.39 (35-10) |
1.97 (50) 1.97 (50) |
0.32 (8) 0.32 (8) |
| HDCW 55/10-500 HDCW 35/10-1200 |
19.7 (500) 47.2 (1200) |
3/0-400 3/0-400 |
2.17-0.59 (55-15) 2.17-0.59 (55-15) |
2.95 (75) 2.95 (75) |
0.51 (13) 0.51 (13) |
| HDCW 80/25-750 HDCW 80/25-1200 |
29.5 (750) 47.2 (1200) |
500-1000 500-1000 |
3.15-0.98 (80-25) 3.15-0.98 (80-25) |
3.94 (100) 3.94 (100) |
0.91 (25) 0.91 (25) |
| HDCW 110/30-1000 HDCW 110/30-1200 |
39.4 (1000) 47.2 (1200) |
1000-2000 1000-2000 |
4.33-1.18 (110-30) 4.33-1.18 (110-30) |
5.20 (132) 5.20 (132) |
0.98 (25) 0.98 (25) |
| HDCW 140/40-1000 HDCW 140/40-1200 |
39.4 (1000) 47.2 (1200) |
N/A N/A |
5.51-1.57 (140-40) 5.51-1.57 (140-40) |
5.71 (145) 5.71 (145) |
1.26 (32) 1.26 (32) |
| 3M HDCW Cable Repair Kit Part Number | H/mm | F/mm | T/mm |
| HDCW 35/10 | 155 | 18 | 0.9 |
| HDCW 55/15 | 175 | 18 | 0.9 |
| HDCW 80/25 | 260 | 30 | 0.9 |
| HDCW 110/30 | 355 | 30 | 0.9 |
| HDCW 140/40 | 455 | 30 | 0.9 |
Where “hot-working” is not permitted due to atmospheric presence of flammable gases in potentially explosive atmospheres and hazardous area locations Cold Shrink tubes can be used to repair cables where access is possible to the open-end of the cable circuit – not suitable for repairing cables mid-circuit or mid-span unless cable can be isolated, uncoupled and disconnected from mains power supply.
If a flexible repair to cable is required we can provide 3M Scotchcast resin based cable repair solutions specified for marine and offshore with excellent resistance to seawater environments, submersion and exposure.
Read Blog: Repairing Damaged Cables, Cable Sheath & Jackets
3M HDCW – Heat Shrink Wraparound Cable Sheath Repair & Jacketing Sleeves
➡ Should you require customer service or technical support on the selection or specification of LV MV HV Cable Accessories please contact us.
♦ For LV Low Voltage Cables | Cold Shrink Cable Terminations MV | Cold Shrink Cable Abandonment | Cold Shrink Tubes
3M Cold Shrink
Thorne & Derrick stock and distribute LV Joints in Cold Shrink, Heat Shrink or Resin Cast technologies – multicore and multi-pair cable joints are available for immediate backfill and energisation of Low Voltage power, control and instrumentation cables 600V/1000V 3.3kV.
Complete range of LV Cable Accessories ➡
Cable Breakouts | Cable Caps | Cable Lugs | Cable Cleats | Cable Trough | Cable Duct | Feeder Pillars | for 11kV/33kV/66kV networks see MV HV Joints & Terminations
Pfisterer | Nexans Euromold | Prysmian | Cable Joints & Terminations MV HV
Cold Shrink by 3M | Joints | Abandonment | Terminations | Low Voltage LV Cables
uploaded by Chris Dodds - Thorne & Derrick Sales & Marketing Manager
Thorne & Derrick International distribute fireproof cable joints for LV Low Voltage fire resistant armoured (SWA) power cables to British Standards BS6387 and BS7846.
The BS7846 British Standard enhanced fire performance cable is specified for fire alarms and emergency lighting in both indoor and outdoor installations – general fire resistant power cables are used to protect emergency plant including sprinkler pumps, smoke extractors and fire dampers.
The British Standards
BS6387:2013 : Test Method For Resistance To Fire Of Cables Required To Maintain Circuit Integrity Under Fire Conditions.
BS 7846:2015 : Electric Cables. Thermosetting Insulated, Armoured, Fire-Resistant Cables Of Rated Voltage 600/1000 V For Fixed Installations (having low emission of smoke and corrosive gases when affected by fire).
BS7846 Cable Construction
| Conductor | Annealed plain or tinned copper (Class 2) |
| Insulation | GP6 or GP8 with levels of HCI no greater than 0.5% |
| Bedding | Polymeric materials with levels of HCI no greater than 0.5% |
| Armour | Galvanised steel wires or galvanised interlocking steel tape |
| Outersheath | Polymeric material conforming to the requirements for LTS 1 contained in BS7655-6.1 |
BS7846 Cable Core Identification
| Number of Cores | Identification |
| Two-core | Brown and blue |
| Three-core | Brown, black and grey |
| Four-core | Blue, brown, black and grey |
| Five-core | Green and yellow, blue, brown, black and grey |
BS7846 Cable Fire Resistance Categories
The cables under the British Standard are categorised according to their special fire resistance characteristics:
| F2 | Resistance to fire, resistance wear, resistance to fire with mechanical shock, assessed separately when tested in accordance with this Standard |
| F30 | Resistance to fire with direct mechanical impact and fire assessed in combination for 30mins when tested in accordance with British Standard BS8491 for 30mins |
| F60 | As per F30 for 60mins |
| F120 | As per F30 for 120mins |
Fire Resistant Armoured Power Cable For Essential Services
BS7846 fire resistant cable manufactured by Prysmian features a plain annealed stranded copper conductor, XLPE insulation, MICA fire resistant tape, polyester tape low smoke zero halogen bedding, fire barrier tape and black low smoke zero halogen outer sheath with a galvanised steel wired armour (SWA).
Low smoke zero halogen (LSZH) heat shrink cable joints with additional fireproof or fire resistant properties are available – typically used to connect, repair or joint Prysmian FP600S or Prysmian FP400 cables. The cable joints feature low smoke and corrosive gas emissions (LSOH) and are moisture resistant with LUL Approvals.
See also : Low Smoke Zero Halogen (LSOH) Cable Accessories
2, 3 & 4 Core 4sqmm – 400sqmm. Plain annealed stranded copper conductor, mica fire resistant tape, XLPE insulated, polyester tape, low smoke zero halogen (LSZH) bedding, fire barrier tape, galvanised steel wire armour, low smoke zero halogen (LSZH) outer sheath. Sheath Colour Black. 600/1000 grade volts.
Manufactured to meet the following standards – circuit integrity: BS8519-2010 120 minutes/BS8491, acid gas emission to IEC 60754, BS EN 50267, flame propagation to IEC 60332-3, BS EN 50265, BS EN50266 and smoke emission to IEC 61034, BS EN 50268.
SPS fireproof cable joints utilise LSF zero halogen heat shrink tubes and fire barrier tubes – the joints incorporate mica tape over each of the conductor cores. Micaca tape is a slit silica tape constructed from 96% pure silica fibre, coated one side with a pressure adhesive backing that facilitates installation of the joint kit.
➡ Watch the Installation Video for Fire Resistant & Zero Halogen Cable Joints HERE.
Fire resistant cable joints ensure vital emergency circuit integrity in fire conditions – cable joint kit contents include fire protection sleeve, stainless steel clamping spring, inner and outer sealing sleeve, tinner copper earth braid, tinned copper earth mesh, insulation tubes, mica pads and crimp ferrules.
Developed specifically for London Underground Limited (LUL) and for use within underground rail tunnels and above surface at platform and station level, the low smoke zero halogen cable joint incorporates flame retardant, non halogen polyolefin heat shrink tubing with a meltable inner liner providing excellent flame retardant properties with reduced acid gas emission and smoke generation.
A complete range of multicore and multipair cable joints are available with LU approval for rail power, signals and telecoms cables.
Thorne & Derrick International distribute the complete range of Fire Resistant Cable Accessories to preserve and power low voltage electrical systems without compromising the manufacturing standards according to BS7846 – complete ranges of cable clips, cleats (including claw cleats) and glands are also available to support the installation of Prysmian FP specification cables.
| Clips | Firefix | Claw Cleat (Single hole – stackable) | 2 Bolt Cleat (Stackable) | Traditional FP Gland | FP Easy Fit Gland | Brass Gland | |
| FP600S | – | – | BICON 370CG | BICON 370CG | – | – | BICON LSF-CW |
| FP200 GOLD | AP Clips | FP Firefix Single or Double | – | – | 251, 252, 254 | FP2520 | BICON A1/A2 423 L |
| FP PLUS | AP Clips | FP Firefix Single or Double | – | – | 251, 252, 254 | FP2520 | BICON A1/A2 423 L |
| FP400 | – | – | BICON 370CG | BICON 370CG | – | – | BICON LSF-CW |
Cable Breakouts | Cable Caps | Cable Lugs | Cable Cleats | Cable Trough | Cable Duct | Feeder Pillars | for 11kV/33kV/66kV networks see MV HV Joints & Terminations
Published 25 Mar 2026
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