Our JJC insulation piercing connectors are engineered for reliable electrical connections in 10kV and 1kV applications. These professional-grade connectors feature a durable construction with weather-resistant glass fiber reinforced polymer housing and high-conductivity contact teeth available in tinned brass, copper, or aluminum.

The connectors offer simple installation - simply place the main wire and branch wire in position and tighten with insulated tools. The special bolt design maintains consistent pressure for superior electrical connection with minimal wire degradation, extending the service life of your insulated wires.

Key features include the sealed structure filled with insulating oil that enhances insulation intensity and safety. These versatile connectors are suitable for various applications including branch connections between copper/aluminum wires, unequal diameter wire connections, and direct connections between equal diameter wires.

Important notes: Only use with conductors meeting national standards. Installation must be performed by qualified professionals using proper insulated tools. These connectors are not reusable after dismantling.
Brisk delivery was a pleasant surprise; the package arrived earlier than expected. The build quality feels robust and durable, which is essential for electrical components. Customer service was responsive and helpful when I had a query about my order. Overall, a smooth and satisfactory experience from start to finish.
Outstanding experience with this purchase! The ordering process was smooth, and the delivery was incredibly fast, arriving well before the estimated date. The quality of the connectors appears excellent, with no visible defects upon inspection. Customer service was very responsive and helpful when I had a question about my order. Overall, a very positive transaction that I would highly recommend to others.
Excellent experience overall! The delivery was incredibly fast and well-handled, arriving ahead of schedule without any issues. Everything was securely packaged, which I really appreciated. The quality of the items appears top-notch, with solid construction that inspires confidence. Customer service was responsive and helpful, making the whole process smooth. I'm very pleased with this purchase and would definitely recommend it to others.
Keenly impressed by the overall experience with this order. The logistics were handled exceptionally well; the package arrived much earlier than anticipated, which was a pleasant surprise. Everything was securely packaged, ensuring no damage during transit. The quality of the connectors appears robust and reliable, meeting high standards for electrical components. Customer service was outstanding—responsive and helpful throughout the process, making customization straightforward. A smooth and efficient transaction from start to finish.
Xcellent experience overall with this purchase! The shipping was incredibly fast and reliable, arriving well ahead of the estimated delivery date, which made my project timeline much smoother. The packaging was secure and protected the items perfectly, showing great attention to detail in logistics. In terms of quality, the connectors feel sturdy and well-made, with no visible defects or issues that I could spot upon inspection. They seem durable and fit for their intended use, giving me confidence in their long-term performance. Customer service was also top-notch; the support team was responsive and helpful, answering my queries promptly and professionally. I'd definitely recommend this supplier for anyone needing reliable electrical components.
Just outstanding service from start to finish! The delivery was incredibly fast and well-handled, with the package arriving securely and ahead of schedule. Jumping into the quality, the connectors feel robust and well-crafted, clearly made with attention to detail. Joyfully, the customer support team was responsive and helpful, addressing my queries promptly and professionally. Overall, a fantastic experience that I'd highly recommend to others.
Never have I been so impressed with the overall experience of ordering these connectors. The shipping was incredibly fast and reliable, with the package arriving well ahead of schedule and in perfect condition. No delays or issues whatsoever, which made the whole process smooth and stress-free. Next, the quality of the items is outstanding; they feel durable and well-made, showing no signs of defects or compromises. I'm confident they will hold up excellently in various applications. Lastly, the customer service team was very responsive and helpful, answering all my queries promptly and professionally. No complaints at all—this is a top-notch supplier that I would highly recommend to others.
Keenly impressed with the overall experience of ordering these connectors. The delivery was incredibly fast and arrived well ahead of schedule, which was a pleasant surprise. The packaging was secure, ensuring that all items were in perfect condition upon arrival. In terms of quality, the materials feel robust and durable, suggesting they will hold up well in various applications. Customer service was outstanding; the team was responsive and helpful, addressing my queries promptly and professionally. I would definitely recommend this supplier for their efficient logistics and high standards.
The delivery was incredibly fast and well-handled, arriving ahead of schedule without any issues. The packaging was secure, ensuring the items were in perfect condition upon arrival. The quality of the connectors appears excellent, with sturdy materials and precise craftsmanship that suggest long-term reliability. Customer service was outstanding; the team responded promptly to my inquiries and provided helpful assistance throughout the ordering process. Overall, a very positive experience that makes me confident in recommending this supplier to others.