Insulated Piercing Clamp
An insulated piercing clamp is also called an insulation piercing connector, it is a type of transmission line accessory that is used for creating a tap connection. The connector can be used on different types of transmission cables, whether it is aerial bundled connectors or naked copper mains.
Insulated piercing clamps are made of UV-resistant thermoplastic fibre which is reinforced with tinned copper for extra strength and protection. It also features a steel bolt and head nut. These parts come in different dimensions depending on the specific areas of applications.
The insulated clamp ensures that no electric current flows through it especially when clamping live wires. This insulation feature is also relevant for the insulated strands.
The ergonomic design of the clamp makes it easy to clamp strands. The end cap is flexible to guide the wires that are connecting. The process of installing an insulated piercing clamp is easy as it does not require twisting and stripping wires.
Key Features
- Compact design and all the components are well secured
- The UV resistant thermoplastic fiberglass is durable and can withstand harsh conditions
- Exerts low clamping pressure during the installation to shield the cable from damage
- Applicable for different cable diameters
| Type | Equivalent Type | Mainline section (mm2) | Branch section (mm2) | Nominal current (A) | Outline size (mm) | Weight (g) | Piercing depth (mm) |
| MT101 | JJC-1 | 1.5-25 | 1.5-10 | 55 | 27×41×62 | 55 | 1.5-2 |
| MTEP | JJC-2 | 16-95 | 1.5-10 | 55 | 27×41×62 | 55 | 1-2 |
| MT2-95 | JJC-3 | 16-95 | 4-35(50) | 157 | 46×52×87 | 160 | 1.5-2 |
| MT2-150 | JJC-4 | 50-150 | 6-35(50) | 157 | 45×52×87 | 162 | 1.5-2.5 |
| MT3-95 | JJC-5 | 25-95 | 25-95 | 214 | 50×61×100 | 198 | 1.5-2 |
| MT3-120 | JJC-5-1 | 16-120 | 16-120 | 214 | 50×61×100 | 198 | 1.5-2 |
| MT4-150 | JJC-6 | (35)50-150 | (35)50-150 | 316 | 50 x 61 x 100 | 219 | 1.5-2.5 |
| MT6 | JJC-7 | 120-240 | 25-120 | 211 | 52×68×100 | 360 | 1.5-2.5 |
| MT7 | JJC-7-1 | 150-240 | 10-25 | 102 | 52×68×100 | 336 | 1.5-2.5 |
| MT240 | JJC-8 | 95-240 | 95-240 | 425 | 83×130×130 | 1040 | 1.5-2.5 |
| MT300 | – | 300 | Arbitrary | 425 | 83×130×130 | 1040 | 1.5-2.5 |
| MT400 | JJC-8-1 | 400 | Arbitrary | 425 | 83×130×130 | 1040 | 1.5-2.5 |
Frequently Answered Questions
What are the applications of insulated piercing connectors？
As the name suggests, insulated piercing connectors complete the connections from the main wires to the subsidiary wires. One common application is on the street lights where they connect the lamp wire to the main live conductor.
What is the reliability of insulated piercing clamp？
These connectors are designed and manufactured to be reliable. The strength of thermoplastic fibre material is one of the factors that makes the connectors reliable. Also, the design of the clamp ensures that there is safe contact with the conductors.
How to install an insulated piercing connector?
For proper insulation, you will need a spanner. You should also be cautious with the live wire when installing this transmission line accessory.
Start by identifying the correct cable from the cable and isolate it using a phase separator. Insert the selected cable into the piercing tap of the clamp. This tap is on the main side of the clamp.
Loosen the shear nut to properly accommodate the cable in the tap. You can then tighten the nut using a spanner until the top hex shears off.
What accessories come with the clamp?
The insulated piercing clamp features a galvanized steel bolt that has a hex head. The bolt allows you to clamp and unclamp the cables when needed.