CellPack Heat Shrink Cable Breakout 4-Core for 240-300mm2 Cables

The CellPack heat shrink cable breakout is a specialized component engineered for the reliable sealing and mechanical protection of 4-core cable crutches. Designed specifically for cables with cross-sections between 240 and 300 mm2, this breakout ensures a tight, moisture-resistant seal at the point where individual cores branch out from the main cable jacket. It is constructed from high-quality, cross-linked polyolefin materials that provide excellent electrical insulation and resistance to environmental stressors, making it a critical component for maintaining the integrity of electrical terminations in demanding industrial and power distribution environments.

Advantages

This heat shrink breakout offers superior durability and long-term performance in various environmental conditions. Its high-shrink ratio allows for a precise fit, ensuring that the cable crutch is fully encapsulated and protected against moisture, dust, and chemical exposure. By providing robust mechanical strain relief, it prevents damage to the cable insulation at the branching point, which significantly extends the service life of the electrical connection. The material is also resistant to UV radiation and weathering, ensuring consistent performance in both indoor and outdoor installations.

Suitable for

• Sealing 4-core power cables in industrial electrical systems
• Protecting cable crutches in power distribution networks
• Terminating medium and low voltage cables within the specified cross-section range
• Applications requiring moisture-proof and environmentally sealed cable junctions

When it may not be suitable

This product is not intended for use with cables outside the specified cross-section range of 240 to 300 mm2, as an improper fit will compromise the seal and mechanical protection. It is also not suitable for applications involving high-temperature environments that exceed the thermal rating of the heat shrink material.

Key specifications

• Cable type: 4-core
• Cross-section range: 240–300 mm2
• Material: Heat-shrinkable cross-linked polyolefin
• Function: Environmental sealing and mechanical protection
• Resistance: Moisture, UV, and chemical resistant

How to use

To install the breakout, first ensure the cable crutch area is clean, dry, and free from debris. Slide the breakout over the cable cores until it is positioned firmly at the crotch of the cable. Using a gas torch or a hot air gun, apply heat evenly starting from the center of the breakout and moving outwards towards the fingers and the main body. Continue heating until the material has fully shrunk and the inner adhesive has flowed, creating a secure, watertight seal. Allow the component to cool completely before moving or applying mechanical stress to the cable.

What to consider before purchase

• Verify the exact cross-section of your 4-core cable
• Ensure compatibility with the cable jacket material
• Confirm the availability of appropriate heating tools for installation
• Check the environmental conditions of the installation site

Usage recommendations: Always perform the heat shrinking process in a well-ventilated area and use appropriate personal protective equipment. Avoid overheating the material to prevent degradation of the polymer structure.