Tension Clamp Supplier
Tension Clamp Supplier
A tension clamp ends a run. It holds the full mechanical tension of the conductor or bundled cable and transfers it into the pole, the bracket or the tower, and it is the part that decides whether the span stays up. Unlike a suspension clamp it is never asked to let the cable slide: it has to grip, and keep gripping, for the life of the line.
We supply 51 models in four construction families: plastic wedge clamps for LV-ABC, aluminium-alloy PAL assemblies for insulated messenger, bolted metal dead-ends, and small wedge anchors for round cable and FTTH drop. 43 of them carry a published range and breaking load on this page. Start from what you are terminating, not from the model name — several bodies here are sold under more than one name.
Budget US$0.30 – 4.60 per piece · 100 pcs per model · 10 – 20 days after deposit · FOB Ningbo or Shanghai
4x50-120mm² is a four-core bundle, 50–120 mm² per core. 25-70mm² is a single conductor section. Ø5-10mm is a round cable measured across the sheath. A clamp ordered from the wrong notation grips the wrong surface at the wrong diameter.
Send the conductor type, the core count and section, and the breaking load your pole design calls for. Where two models publish the same range, we confirm which body your drawing expects before quoting, not after.
Models by cable type
Click any model to open its product page. Breaking load is the published figure for that model, in kN. Where several models share a range, the section and the load are what separate them.
LV-ABC bundle, two or four coreWritten as 2x… or 4x…, the section is per core · Budget US$0.60 – 1.60 / pc · MOQ 100 pcs
PA2/252-CORE2x10–35 mm²2.5 kN
PA4/254-CORE4x16–25 mm²2.5 kN
PA-25S4-CORE4x16–25 mm²2.5 kN
PA-903PLASTIC25–70/2x10–25 mm²1.5 kN
PA4/16~354-CORE4x16–35 mm²12 kN
PA4/352-CORE2x16–35 mm²5 kN
PA2/352-CORE2x16–35 mm²5 kN
PA25, four-corePLASTIC6–25 mm²2.5 kN
PA25, two-corePLASTIC6–25 mm²2.5 kNPlastic tension clamp for larger sectionsSingle or multi-core ABC above 50 mm² · Budget US$1.60 – 3.00 / pc · MOQ 100 pcs
PA16PLASTIC10–70 mm²3 kN
PA16~95PLASTIC4–120 mm²2.5 kN
PA1500PLASTIC50–70 mm²6 kN
PA2000PLASTIC70–95 mm²6 kNAluminium-alloy PAL assemblyInsulated neutral messenger, wedge body with stainless bail · Budget US$1.80 – 3.20 / pc · MOQ 100 pcs
Bolted metal dead-endBare or large-section conductor, bolted body · Budget US$3.00 – 4.60 / pc · MOQ 100 pcs
NES-1SMETAL4x16–50 mm²20 kN
NES-2SMETAL4x50–120 mm²20 kN
RPA425/70METAL4x16–50 mm²20 kN
JBG-50-1000METAL25–50 mm²10 kN
GD160METAL2x16–35 mm²5 kN
GD161METAL4x16–35 mm²5 kNRound cable and drop wedge anchorSized across the sheath in mm, not by conductor section · Budget US$0.30 – 1.20 / pc · MOQ 100 pcs
PA39ROUNDØ3–9 mm4 kN
PA03ROUNDØ3–7 mm1.2 kN
PA05ROUNDØ1.5–6 mm2 kN
PA06ROUNDØ2–6 mm4 kN
PA07ROUNDØ3–7.5 mm4 kN
PA08ROUNDØ3.5–6.5 mm5.5 kN
PA09ROUNDØ5–10 mm8 kN
PA300ROUND—2.5 kN
PA500ROUNDØ4.5–9 mm—
PA600ROUNDØ8–15 mm—
PAL1500DROUNDØ12–15 mm15 kNFTTH and ADSS drop anchorBail-type anchors for two-core drop and aerial fibre · Budget US$0.30 – 1.00 / pc · MOQ 200 pcs
ODWAC-15FTTH2×6 mm1 kN
ODWAC-20FTTH2×6 mm1 kN
ODWAC-21TFTTH2×6 mm1 kN
ODWAC-22/26FTTH2×6 mm1 kN
ODWAC-22GFTTH2×6 mm1 kN
ODWAC-22HFTTH—1 kN
ODWAC-22SFTTH—1 kN
ODWAC-24FTTH2×5 mm1 kN
ODWAC-24SFTTH2×5 mm0.5 kN
ODWAC-24SLFTTH2×5 mm0.5 kNEight models without published figures yetListed in this category but no cable range or breaking load is published for them. We do not guess these numbers: ask and we will send the drawing or confirm from the sample.
PAL500 · PA157, two-core · PA158, four-core · DCR-2 · STA · STC · PA56 · GD-F2
What a tension clamp does to the line, and what it must never do
At a dead-end, an angle pole or a section point the conductor is terminated, so the whole mechanical tension of the span arrives at the clamp. That is the difference from a suspension clamp, which only carries the weight of the cable between poles. The tension clamp is the fitting that converts a pull into a fixed point, and everything downstream — pole loading, stay design, foundation — is calculated on the assumption that it holds.
It also has to hold without damaging the cable. A wedge grips a length of the insulation or the messenger; a bolted body grips across the conductor; small drop anchors grip the sheath of a round cable. In each case the useful load is limited by how much pressure the cable will take, not by how hard the body can be tightened, which is why a bigger clamp is not automatically a safer choice.
Where the wrong part gets used, it is almost always here: a tension clamp on an intermediate pole, a suspension clamp at a dead-end, or a wedge sized by conductor section when the cable is actually round. The comparison below and the notes under each group are there to catch that before an order is placed.
Where the load goes. Into the pole, not into the cable. The clamp holds the conductor, the pole hardware holds the clamp, and the ground holds the pole. Every rating on this page is the load at which that chain is expected to hold.
How the grip is made. A wedge driven into a tapered body, a bolted body clamped over the conductor, or a set of cleats. In all three the load is spread over a length of insulation or conductor rather than pinched at one point, which is what keeps the grip from damaging what it holds.
What it must never do. Let go quietly. A suspension clamp that slips shows up as changed sag and can be corrected. A tension clamp that slips takes the span down, so its published breaking load and the fitting that seats it are not interchangeable with a heavier or lighter neighbour.
Complete comparison table
All 45 items with published data, grouped by construction and then by breaking load. The six models without published figures are listed above the table, not inside it.
| Model | Construction | Conductor or cable range | Breaking load |
|---|---|---|---|
| PA2/25 | Plastic wedge | 2x10–35 mm² | 2.5 kN |
| PA4/25 | Plastic wedge | 4x16–25 mm² | 2.5 kN |
| PA-25S | Plastic wedge | 4x16–25 mm² | 2.5 kN |
| PA-903 | Plastic wedge | 25–70/2x10–25 mm² | 1.5 kN |
| PA4/16~35 | Plastic wedge | 4x16–35 mm² | 12 kN |
| PA4/35 | Plastic wedge | 2x16–35 mm² | 5 kN |
| PA2/35 | Plastic wedge | 2x16–35 mm² | 5 kN |
| PA25, four-core | Plastic wedge | 6–25 mm² | 2.5 kN |
| PA25, two-core | Plastic wedge | 6–25 mm² | 2.5 kN |
| PA16 | Plastic wedge, large | 10–70 mm² | 3 kN |
| PA16~95 | Plastic wedge, large | 4–120 mm² | 2.5 kN |
| PA1500 | Plastic wedge, large | 50–70 mm² | 6 kN |
| PA2000 | Plastic wedge, large | 70–95 mm² | 6 kN |
| PAL1000 | Alloy wedge | 25–50 mm² | 12 kN |
| PAL1500 | Alloy wedge | 35–70 mm² | 15 kN |
| PAL2000 | Alloy wedge | 70–150 mm² | 18 kN |
| NES-1S | Bolted metal | 4x16–50 mm² | 20 kN |
| NES-2S | Bolted metal | 4x50–120 mm² | 20 kN |
| RPA425/70 | Bolted metal | 4x16–50 mm² | 20 kN |
| JBG-50-1000 | Bolted metal | 25–50 mm² | 10 kN |
| GD160 | Bolted metal | 2x16–35 mm² | 5 kN |
| GD161 | Bolted metal | 4x16–35 mm² | 5 kN |
| PA39 | Round-cable wedge | Ø3–9 mm | 4 kN |
| PA03 | Round-cable wedge | Ø3–7 mm | 1.2 kN |
| PA05 | Round-cable wedge | Ø1.5–6 mm | 2 kN |
| PA06 | Round-cable wedge | Ø2–6 mm | 4 kN |
| PA07 | Round-cable wedge | Ø3–7.5 mm | 4 kN |
| PA08 | Round-cable wedge | Ø3.5–6.5 mm | 5.5 kN |
| PA09 | Round-cable wedge | Ø5–10 mm | 8 kN |
| PA300 | Round-cable wedge | — | 2.5 kN |
| PA500 | Round-cable wedge | Ø4.5–9 mm | — |
| PA600 | Round-cable wedge | Ø8–15 mm | — |
| PAL1500D | Round-cable wedge | Ø12–15 mm | 15 kN |
| ODWAC-15 | Drop anchor | 2×6 mm | 1 kN |
| ODWAC-20 | Drop anchor | 2×6 mm | 1 kN |
| ODWAC-21T | Drop anchor | 2×6 mm | 1 kN |
| ODWAC-22/26 | Drop anchor | 2×6 mm | 1 kN |
| ODWAC-22G | Drop anchor | 2×6 mm | 1 kN |
| ODWAC-22H | Drop anchor | — | 1 kN |
| ODWAC-22S | Drop anchor | — | 1 kN |
| ODWAC-24 | Drop anchor | 2×5 mm | 1 kN |
| ODWAC-24S | Drop anchor | 2×5 mm | 0.5 kN |
| ODWAC-24SL | Drop anchor | 2×5 mm | 0.5 kN |
Models that look alike, and how to tell them apart
Four groups in this range cannot be separated by looking at the photograph, and two of them publish identical figures.
Read the note under the group you picked, then check it against the comparison table before ordering.
Both publish the same range, 2x16–35 mm², and the same 5 kN. The 4 in PA4/35 does not mean four-core here — it is a body reference. Order by the published range and the core count, not by the number in front of the slash.
Three names for bodies that all land on 2.5 kN. PA4/25 and PA-25S publish 4x16–25 mm², while the two PA25 listings publish 6–25 mm² for the four-core and the two-core version. Same load, different range.
All three publish 20 kN, the highest figure in this category. The range is the only separator: NES-1S and RPA425/70 take 4x16–50 mm², NES-2S takes 4x50–120 mm².
Eight of them publish 1 kN and two publish 0.5 kN, at cable ranges of 2×5 mm or 2×6 mm. Which one you need depends on the drop cable and the span, so send both rather than picking by name.
Where a tension clamp is the wrong part
Three cases come up often enough to state plainly, because each one fails in a way that is not obvious until the line is under load.
If the conductor is not terminated there, the fitting only has to carry the weight of the cable. That is suspension duty, and a suspension clamp is the correct part. Putting a tension clamp on a tangent pole over-constrains the cable and loads the pole in a direction it was not designed for.
You do not cut the main to terminate a branch. That joint belongs to an insulation piercing connector, which taps without stripping. A tension clamp used as a tap-off leaves the branch unsupported and the main damaged.
Wedge anchors are sized by the diameter they close on. A four-core clamp on a two-core drop, or a Ø5–10 mm anchor on a 12 mm sheath, will close on itself before it closes on the cable and will hold far less than its published load. Measure the sheath, do not read it off the conductor schedule.
What a first order costs, and how it ships
Price, minimum quantity, lead time and payment decide whether a clamp order is worth placing. These are the bands this class of product trades in, so you can budget before you ask. Wedge clamps and small drop anchors sit at the bottom of the range; bolted metal bodies at the top.
| Clamp group | Indicative FOB unit price | Typical minimum | Lead time after deposit |
|---|---|---|---|
| LV-ABC two or four-core clampPA2/25, PA4/25, PA-25S, PA-903, PA4/16~35, PA4/35, PA2/35, PA25 both cores | US$0.60 – 1.60 / pc | 100 pcs per model | 10 – 15 days |
| Larger-section plastic clampPA16, PA16~95, PA1500, PA2000 | US$1.60 – 3.00 / pc | 100 pcs per model | 10 – 20 days |
| Aluminium-alloy PAL assemblyPAL1000, PAL1500, PAL2000 | US$1.80 – 3.20 / pc | 100 pcs per model | 15 – 20 days |
| Bolted metal dead-endNES-1S, NES-2S, RPA425/70, JBG-50-1000, GD160, GD161 | US$3.00 – 4.60 / pc | 100 pcs per model | 15 – 20 days |
| Round-cable wedge anchorPA03 to PA09, PA39, PA300, PA500, PA600, PAL1500D | US$0.30 – 1.20 / pc | 100 pcs per model | 10 – 20 days |
| FTTH and ADSS drop anchorODWAC series, PA56, GD-F2 | US$0.30 – 1.00 / pc | 200 pcs per model | 12 – 20 days |
Figures are in US dollars, FOB Ningbo or Shanghai, for catalogue models in standard finish. They are the bands these clamps are listed at in 2026 — not a quotation for your order. Finish, pin material and packing move the figure more than the volume does.
Unit price by order quantityThe band above is the 100-piece price. The same model costs less as the quantity climbs.
The rest of the termsWhat is fixed before the container is loaded, and what is not.
Samples
Free of charge. You pay the courier and we credit it back against the first order. Posted within two to three days of the drawing being confirmed.
Payment
Small orders are paid in full when the order is placed. On larger orders, 30% T/T as a deposit, with the balance settled before shipment. The quotation states which of the two applies to your quantity.
Port and Incoterms
FOB, CFR or CIF from Ningbo or Shanghai. Give us the destination port and we quote the freight leg separately, so you can see what it adds to the landed cost.
Packing
Packed in export cartons, palletised or loaded loose in the container. Carton marks can carry your model code instead of ours, and we send the carton list with dimensions and weights before you book the freight.
Mixed models
One shipment can carry several models. Each is packed separately so your store can issue it without repacking.
Before the container leaves
Photographs of the finished parts and the packed cartons, and the mill certificate for the steel. Third-party inspection is welcome; tell us the date and we arrange access.
Treat these as budget bands, not a quotation.
Send the model, the quantity and the destination port. We reply with a firm price, the packing list and a lead time against your date, within one working day.
Our own workshop
Stamping, injection moulding, machining and assembly are carried out in-house. That is what makes it possible to confirm a model against the drawing before you order.
Body, bracket and keeper stamped to tolerance.
Polymer bodies and cable inserts moulded in-house.
Cable groove and contact surfaces finished to tolerance.
Bolted rather than welded assembly.
Manufacturer, not a trading desk
GGLDF is Zhejiang Ganggu Electric Power Technology Co., Ltd., registered in Yueqing, Zhejiang. We manufacture for utility contractors, EPC firms and distributors, and we build these product lines rather than reselling them.
The range covers suspension clamps, tension clamps, insulation piercing connectors, parallel groove clamps, busbar accessories, cable lugs and cable terminals. Where a project needs fittings from more than one of these categories, the drawings and the certification file come from one manufacturer rather than from two sources you then have to reconcile.
How to reach us
- Factory address
No. 1, Lane 17, Fangqiao Road, Liushi Town, Yueqing City, Wenzhou City, Zhejiang Province, China - Email
salesmanager@ggldf.com - Phone / WhatsApp
+86-15825688289
Questions buyers ask before ordering
Selection and ordering questions we answer most often on this range.
+What is the difference between a tension clamp and a suspension clamp?
A tension clamp carries the full mechanical tension of the line at dead-ends, angle poles and section points. A suspension clamp only carries the weight of the cable on an intermediate pole and lets it move lengthwise. The two are not interchangeable, and the suspension range is on a separate page.
+Why does PA4/35 only list a two-core range?
Because 2x16–35 mm² is the published range for that body. The 4 is a body reference in the model name, not a core count. This is exactly the kind of thing that gets ordered wrong from a catalogue photo, so confirm the core count in the enquiry rather than inferring it from the name.
+Which clamp do I need for 4x25 mm² ABC?
PA4/25 or PA-25S, both published at 2.5 kN for 4x16–25 mm². If the pole design calls for a higher load at that same conductor, PA4/16~35 publishes 12 kN over 4x16–35 mm², and the metal bodies go to 20 kN.
+Is 2.5 kN enough at a dead-end on LV-ABC?
It is the published rating for the plastic four-core bodies and it is the common figure for service and short-span work. It is not enough where the pole design specifies more, and that number comes from your line calculation, not from the clamp catalogue.
+What separates NES-1S from NES-2S?
Range only. Both publish 20 kN; NES-1S takes 4x16–50 mm² and NES-2S takes 4x50–120 mm². Choosing the larger body for a small conductor gains nothing.
+Do the PAL models include the pole bracket?
It depends on the model, so ask rather than assume. Some PAL assemblies are supplied with a mounting bracket and some as the clamp alone. Tell us whether you need the bracket and we will confirm what is in the box for that specific model before quoting.
+What does the Ø mean on the round-cable models?
It is the outside diameter of the cable measured across the sheath, not a conductor section. Measure the cable you will actually install, including any oversheath, because a clamp that closes on itself before it closes on the cable never reaches its published load.
+Can these clamps be reused after removal?
Treat them as single-use. A wedge takes a set against the cable it gripped and the cleats mark the insulation; reinstalling the same body gives a lower and less predictable grip than the published figure.
+Can these be used on bare AAAC or ACSR?
The published ranges on this page describe insulated ABC, insulated messenger and round drop cable. For bare conductor, send the conductor type, construction and diameter and we will confirm whether a model is suitable or recommend the metal dead-end that is.
+Can you produce to our drawing or under our brand?
Yes. Send the drawing or the sample, the annual quantity and the marking you need. Where a drawing differs from our standard body we quote from the drawing, and we say which tests we can evidence before you place the order.
+Can we start with a trial order?
Yes, and most first orders are one. A few hundred pieces across two or three models is the usual start, packed per model with the carton list sent before you book freight.
To get a quotation
Five details let us confirm the exact model rather than quote you a range and leave you to choose.
- What the clamp terminates: four-core ABC, two-core ABC, single insulated conductor, round drop cable or bare conductor
- Conductor section in mm², or cable outside diameter in mm — and for bundles, the number of cores
- The breaking load your pole design calls for
- Quantity, destination port, and whether you need the pole bracket
- Whether the joint is a dead-end, an angle pole or a section point
If you only have a cable size and a quantity, send those. We will come back with the model, not with a question about the model.
“4,000 pcs tension clamp for 4x25 mm² ABC, dead-end on concrete poles, 100 pcs per model, CIF Mombasa. Do you supply the pole bracket with it?”
The 4x25 mm² fixes the group, the bracket question changes what is in the carton, and the port lets us quote a delivered figure instead of FOB only.
Replies go to the email address you give us, within one working day.
Prefer email? salesmanager@ggldf.com