HEX Four-Hole Copper Cable Lugs – 400 to 1000 sq mm, 10.5 or 12.5 mm Holes

HEX four-hole cable terminal ends are built for the largest power cables — 400 to 1000 sq mm. A four-hole palm spreads the clamping force over the busbar, stops rotation and keeps contact resistance low at high currents. They are E-copper, electro-tinned, with 10.5 or 12.5 mm holes. Made by HEX, the brand of Brass Copper & Alloy (I) Ltd., Mumbai — an ISO 9001 company whose products are tested by CPRI (India), UL (USA), KEMA (Netherlands) and SIRIM (Malaysia).

At a glance

• Range: 400, 500, 630, 800 and 1000 sq mm
• Holes: 4 × 10.5 mm or 4 × 12.5 mm
• Hole pattern: 25 mm and 35 mm pitch (dimensions H and L)
• Economy four-hole: HLT 6304E10 (630) and HLT 8004E10 (800)
• Material: E-copper (electrolytic copper), minimum 97% IACS conductivity to IS 191
• Finish: electro-tinned to IS 1359

Why a four-hole lug

• Four bolts, lower contact resistance on large busbar joints.
• No rotation under heavy cable weight or vibration.
• Sizes to 1000 sq mm.
• Two hole diameters to match the bolts.

Specifications

• 400 sq mm: HT4004E10 / HT 4004E12 — barrel A 28.5, C 36.5, D 52.5, B 45, J 114 mm
• 500 sq mm: HT 5004E10 / HT 5004E12 — A 30, D 56, B 50, J 124 mm
• 630 sq mm: HT 6304E10 / HT 6304E12 — A 35, D 65, B 60, J 144 mm
• 800 sq mm: HT 8004E10 / HT 8004E12 — A 39, D 72, B 78, J 170 mm
• 1000 sq mm: HT10004E10 / HT 10004E12 — A 43, D 78.5, B 90, J 200 mm
• Hole pitch: L 35 mm, H 25 mm
• Tolerance: ± 3%
• Material: E-copper (electrolytic copper), minimum 97% IACS conductivity to IS 191
• Finish: electro-tinned to IS 1359

Where it is used

• Transformer LV bushings and busbars
• Main LT panels, PCCs and bus ducts
• Generator and large motor terminations
• Solar inverter and battery bank main cables

Which HEX copper lug do I need?

• Standard UL-listed tubular lugs — the general-purpose copper lug, 1.5–1000 mm², with inspection hole.
• Economy range — the same job for 35–1000 mm² where a lighter lug is acceptable.
• Bell mouth — flared entry for fast insertion of flexible or fine-stranded conductors.
• Without inspection hole — sealed barrel for damp or outdoor locations.
• Long barrel, 2-hole or 4-hole (this page) — longer crimp or anti-rotation palm for heavy terminations.
• 33 kV terminals — for HV cable terminations.

Related products

• HEX two-hole copper lugs
• HEX economy range copper lugs
• HEX bimetallic lugs with square palm

Frequently asked questions

Which cable sizes do four-hole HEX lugs cover?

400, 500, 630, 800 and 1000 sq mm, with 10.5 or 12.5 mm holes.

What is the hole pattern?

Four holes on a 35 mm × 25 mm pitch.

Is there a lower-cost version?

Yes — economy four-hole lugs HLT 6304E10 (630 sq mm) and HLT 8004E10 (800 sq mm).

How should the lug be crimped?

Use a crimping tool and die matched to the cable size, and crimp from the palm end towards the barrel end.

Where can I buy HEX cable lugs in India?

From Jai Enterprises, which supplies HEX cable lugs, terminals and connectors across India from Bhilai and Raipur, Chhattisgarh. Call +91 9340081159 with the product codes or cable sizes and quantities.

How to order

Supplied by Jai Enterprises, despatched from Bhilai and Raipur, Chhattisgarh, to sites across India. To request a price, call +91 9340081159 or send an enquiry from this page with your quantity and site details, and we will confirm availability, lead time and the right model for the job.