Hot Line Clamps are specialized electrical connectors for live line applications, enabling secure tap connections on energized distribution lines without service interruption. These clamps work with copper, aluminum, and Aluminum Conductor Steel Reinforced (ACSR) conductors and are installed using standard hot stick tools.
The clamps feature extended jaw width for improved conductor contact, reducing joint temperature and minimizing conductor cold flow. Vibration-resistant spring-loaded mechanisms maintain connection integrity under dynamic loads. Material composition typically involves high conductivity aluminum alloy or copper alloy with electro-tin plating for enhanced corrosion resistance. Some models include pure soft aluminum spacers or bronze components, with factory-installed inhibitor paste available to prevent galvanic corrosion in bimetal applications.
Design elements include forged eyebolts providing consistent strength and uniform expansion under loading, while side-positioned tap connections minimize corrosion risks. An enclosed compression spring on the eye screw thread aids vibration resistance. Hot Line Clamps accommodate conductor sizes from 8 American Wire Gauge (AWG) to 400 MCM for copper and similar ranges for aluminum and ACSR. Application scenarios include distribution tap connections, full-duty joints for line equipment, bimetal connections, grounding applications, and current limiting fuse mounts.
Testing per American National Standards Institute (ANSI) C119.4 standards verifies the clamp’s ability to withstand proper connection ampacity. The field-proven design, low contact resistance, and durable construction ensure secure, efficient electrical connections in both residential and industrial systems.
High-Performance Hot Line Clamp Supplier
RaxPower, established in 2003 and based in Hebei Province, China, is a leading manufacturer of pole line hardware with over 21 years of expertise in R&D, production, and global sales. Our Hot Line Clamp embodies this legacy, benefiting directly from our specialized knowledge in power line construction. Guided by the principle “quality is life, reputation is base,” we ensure that each clamp is crafted using advanced hot forging technology, resulting in superior strength and precise sizing for reliable performance in demanding applications.
Our manufacturing advantages include strict quality control from raw material selection to multi-stage testing, with automation ensuring uniform dimensions and timely delivery. The Hot Line Clamp features our expert hot-dip galvanizing, achieving smooth, bright surfaces with coating thickness exceeding 85 microns per ISO 1461, and undergoes rigorous load and gauge tests in compliance with IEC 120 standards. Backed by a skilled team of over 170 employees, including 30 technicians and 10 engineers, and supported by 17,000 square meters of production space, we guarantee products that have passed SGS and authoritative institute verifications. Trust RaxPower as your one-stop supplier for durable, high-performance hardware solutions.
| Model Number | Connection Type Run | Connection Type Tap | Run Diameter Range (in) | Tap Diameter Range (in) | Run Conductor Range | Tap Conductor Range | Dimension A (in) | Dimension B (in) | Dimension C (in) | Tap Nut Size | Standard Pack | Material | Key Features |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| C1520 | CU | CU | 0.128-0.414 | 0.128-0.414 | #8 sol – 2/0 str | #8 sol – 2/0 str | 4.5 | 1.25 | 2.75 | 9/16″ | 25 | Copper Alloy | Spring-loaded, Vibration-resistant, Forged eyebolts |
| C1530 | CU | CU | 0.162-0.745 | 0.152-0.682 | #6 sol – 400 MCM | #6 sol – 4/0 str | 6.5 | 1.75 | 2.5 | 3/4″ | 25 | Copper Alloy | Spring-loaded, Vibration-resistant, Forged eyebolts |
| C1535AP | AL | AL/CU | 0.250-0.860 | 0.250-0.860 | #4 ACSR – 477 MCM | #4 ACSR – 477 MCM | 6.5 | 2.65 | 2.75 | 3/4″ | 25 | Aluminum Alloy, Tin Plated | Spring-loaded, Vibration-resistant, Forged eyebolts |
| CPD-A | AL | AL | N/A | N/A | 16-35 mm² | 12 mm² | N/A | N/A | N/A | N/A | N/A | High conductivity aluminum alloy | Vibration-resistant with enclosed compression spring |
| CPD-B | AL | AL | N/A | N/A | 25-50 mm² | 18 mm² | N/A | N/A | N/A | N/A | N/A | High conductivity aluminum alloy | Vibration-resistant with enclosed compression spring |
Frequently Asked Questions (FAQS)
What is a hot line clamp?
RaxPower hot line clamps are live line tools designed for distribution tap connections, allowing secure electrical connections to be made on energized lines using insulated sockets or hot sticks.
What key features do hot line clamps offer?
Key features include extended jaw width for excellent conductor contact, spring-loaded mechanisms with enclosed compression springs that compensate for cold flow and vibrations, forged eyebolts for strength, and side-positioned tap connections to prevent corrosion.
Are hot line clamps tested and certified to industry standards?
Yes, RaxPower hot line clamps undergo successful current cycle testing per ANSI C119.4, ensuring they withstand the ampacity of properly installed connections and meet rigorous industry performance and safety requirements.
What materials are hot line clamps made from?
RaxPower hot line clamps are constructed from high-conductivity materials such as copper alloy with electro tin plating, bronze alloy, and aluminum alloy, ensuring durability, corrosion resistance, and compatibility with various conductors. For bimetal connections, inhibitor paste is recommended to avoid galvanic corrosion, ensuring ROHS compliance.
What types and sizes of conductors are compatible with hot line clamps?
RaxPower hot line clamps are compatible with copper, aluminum, and ACSR conductors, covering sizes from #8 AWG to 800 MCM, including solid, stranded, and compressed types.
How are hot line clamps installed?
RaxPower hot line clamps are installed on live lines using insulated sticks or sockets, enabling safe and efficient tap connections without de-energizing the line.
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