Ellis Patents Trident Trefoil Cable Cleats (24-83mm)

Trident Cable Cleats

Trefoil Cleats

Maximum Short Circuit Test Level 94kA or 134kA
Cable OD Ø36mm
Cable Cleat Spacing – 600mm or 300nn
Cable Cleat Type –Trefoil Cables
Material – LSF
Cleat Range Trefoil Cables – 24-83mm

Thorne & Derrick International, based in the UK, stock and distribute the complete range of cable cleats and cable hangers manufactured by Ellis Patents including the Trident range for short circuit retention and cable protection of LV (Low Voltage), MV (Medium Voltage) and HV (High Voltage) power cable systems in a trefoil installation.

The Ellis Trident® Polymer Cable Cleat are expertly engineered for securing cables in trefoil formation. Designed, tested, and manufactured in compliance with IEC 61914, this robust cable cleat ensures reliable performance in electrical installations, even under short-circuit conditions.

The cleat is available in a range of sizes with range taking ability to suit cables in trefoil formation. The cleat is manufactured as standard in LSF which is PFAS and halogen free, flame retardant and suitable for outdoor applications. For higher temperature applications GFN has the same material properties as LSF but offers a higher operating temperature. (+120˚C)

The Trident can be fixed to the supporting structure by either two M10 fixings or one M12 fixing. Fixings for the cleat can also be supplied.

Trident Trefoil Cable Cleats

Trident Cable Cleats

Key Features

IEC 61914 Certified – tested and compliant with the latest international cleat standards
Trefoil Cable Retention – ideal for high-performance LV, MV & HV cable installations
PFAS & Halogen-Free – low smoke and fume material for improved safety
Flame Retardant – safe for indoor and outdoor environments
High Temp Version (GFN) – suitable for installations up to +120°C
Mounting Options – install with two M10 or one M12 fixing
Range-Taking Design – accommodates a wide range of cable diameters
Fixings Available – fasteners supplied upon request

Ellis Trident Polymer Cable Cleat – Trefoil Formation

Compliant with IEC 61914 and available in both LSF (standard) and GFN (high‑temperature, up to +120 °C) options. Fixable with two M10 or one M12 bolt; fixings available on request.

GFN Part No.	LSF Part No.	Cable Ø Range (mm)	W (mm)	H (mm)	D (mm)	P (mm)	Fixing	Weight (g) [GFN/LSF]
TR24-29GFN	TR24-29LSF	24–29	122	91	77	92.5	M10	360 / 288
TR27-32GFN	TR27-32LSF	27–32	126	95	77	98.5	M10	370 / 296
TR30-36GFN	TR30-36LSF	30–36	134	104	77	104.5	M10	383 / 306
TR34-41GFN	TR34-41LSF	34–41	144	112	77	114.5	M10	485 / 388
TR39-47GFN	TR39-47LSF	39–47	156	124	77	125	M12	568 / 454
TR45-54GFN	TR45-54LSF	45–54	172	138	77	145	M12	666 / 533
TR52-62GFN	TR52-62LSF	52–62	190	153	77	160.5	M12	793 / 634
TR60-72GFN	TR60-72LSF	60–72	215	177	98	182	M12	1100 / 880
TR69-83GFN	TR69-83LSF	69–83	238	198	98	205	M12	1300 / 1040

Trident Cleat Dimensions

Installing Cable Cleats

Installation instructions for trefoil cables using Trident cleats manufactured by Ellis Patents:

1) If the cleat is being fixed with 1 x M12 fixings, see 1a, if it is being fixed with 2 x M10/M12 see 1b.


1a) Feed the closure fixings through the base of the cleat into the hex recesses. Place then the cleat on the mounting structure and fix the cleat from below using 1x M12 fixings through the central hole.	1b) Place the base of the cleat on mounting surface and feed the 2 x M10 or M12 fixings through the base of the cleat (product size dependent) and the mounting structure. To hold the base down before the top is installed, the base needs to be fixed with two 2 x M10/M12 nuts (product size dependent) in the recesses provided (as detailed on the picture on the above).	3) Lay the cable on the base on the cleat.	4) Place top of the cleat on the base. Tighten the closure nuts to a maximum torque of 10N.m. Ensure that the nuts are tightened equally to ensure that the top is installed straight Note: Do not over tighten the cleat. The cleat should secure the cable but doesn’t need to be over tightened that the cable bulges on each side of the cleat.

Torque
Nuts need to be tightened in a maximum torque of 10Nm. This is based on the strength of the clamp rather than the cable installed within. See the item 4 of Ellis’ guidelines on clamped cables.

Short-Circuit Performance & Testing (IEC 61914:2021)

Tested in GFN or LSF to IEC 61914:2021 certification standards.
Short-circuit ratings:
- 134 kA for 300 mm spacing on Ø36 mm cable
- 94 kA for 600 mm spacing on Ø36 mm cable
Temperature range:
- GFN: –40 °C to +120 °C
- LSF: –60 °C to +60 °C

Ellis Patents Trident Cable Cleats Testing Summary

Trident Cleats have been tested in line with the International Standard ‘Cable Cleats for Electrical Installations’ IEC 61914:2021. Typical results are detailed below, please note that these testing values are maximums and safety factors appropriate to your application should be used:

Property	IEC 61914 Clause	Units / Classification	GFN Test Data	LSF Test Data
Cleat Type	6.1.2	Non-metallic	–	–
Temperature for Permanent Application	6.2	°C	–40 to +120	–60 to +60
UV Resistance	6.5.1.2	Xenon Arc (Method A)	Pass	Pass
Corrosion Resistance	6.5.2	N/A	N/A	N/A
Impact Rating	6.3.5	Heavy / Very Heavy	Very Heavy / Heavy	Heavy
Flame Propagation	10.0, 10.1	Application time ≥30s	Pass	Pass
Axial Load Rating	6.4.3, 9.4	Newtons (N)	1100	1500
Lateral Load Rating (Horizontal)	6.4.2, 9.3	Newtons (N)	2250	2250
Lateral Load Rating (Vertical)	6.4.2, 9.3	Newtons (N)	2250	2250
Short Circuit Withstand (300 mm Spacing)	6.4, 6.4.5, 9.5	kA	134 kA (Cable Ø36 mm) – Report PDL-18.071.6	121 kA (Cable Ø36 mm) – Report PDL-22.159.2
Short Circuit Withstand (600 mm Spacing)	6.4, 6.4.5, 9.5	kA	94 kA (Cable Ø36 mm) – Report PDL-18.071.5	N/A

Cable Cleats v Cable Ties

The Video produced by Ellis Patents provides compelling evidence of the need to ensure all cables are adequately supported and retained to cable containment to protect against the devastating effects of short circuit faults: 118kA Short Circuit Fault Current | 0.1 Seconds Duration | 480V Low Voltage Cables.