Introduction
People often confuse cable glands and cable connectors. They look similar and both attach cables to equipment — but they serve different purposes. This guide explains the difference.
What Is a Cable Gland?
A cable gland (also called a cable fitting or cable gland) is a device that attaches and seals the end of a cable to an enclosure or equipment. Its main jobs are:
- Sealing — Prevents water, dust, and moisture from entering the enclosure
- Strain relief — Holds the cable in place so pulling doesn’t damage connections
- Grounding (metal glands) — Provides a ground path
Cable glands are typically used where cables enter electrical boxes, machines, or outdoor equipment.
What Is a Cable Connector?
A cable connector (also called a cable coupler or inline connector) joins two cables together. It’s used to extend a cable run or connect two cable ends.
Examples:
- MC4 connectors — Join solar panel cables
- NEMA connectors — Join power cords
- Audio connectors — Join audio cables (XLR, TRS)
Key Differences
| Feature | Cable Gland | Cable Connector |
|---|---|---|
| Purpose | Seal cable entry to enclosure | Join two cables together |
| Location | Where cable enters a box/equipment | Inline between two cable ends |
| Sealing | Primary function (IP65/67/68) | May or may not be sealed |
| Strain relief | Yes | Sometimes |
| Grounding | Yes (metal glands) | Sometimes |
| Typical use | Electrical boxes, outdoor equipment | Extending cables, joining runs |
When to Use Which
Use a cable gland when:
- A cable enters an enclosure or electrical box
- You need a waterproof seal at the entry point
- You need strain relief for the cable
Use a cable connector when:
- You need to join two cable ends
- You need to extend a cable run
- You need a detachable connection (e.g., MC4 on solar panels)
FAQ
Can I use a cable connector as a gland?
No — a connector joins two cables; it doesn’t seal the entry to an enclosure. They serve different purposes.
Are cable glands waterproof?
Yes — most are rated IP65, IP67, or IP68. The seal compresses around the cable to create a watertight seal.
What’s another name for a cable gland?
Cable glands are also called cable fittings, cable glands, or cable strain reliefs.
Conclusion
Cable glands seal cable entries to enclosures. Cable connectors join two cables together. They look similar but serve different purposes. Use the right one for your application. Contact us for help choosing.
