Cable gland selection plays a critical role in electrical safety, cable termination reliability, and long-term system performance. Choosing the wrong cable gland size, type, or compression method can lead to cable damage, ingress of dust or moisture, and even hazardous failures.
This comprehensive guide from Exgrip covers everything you need to know about cable gland size chart, cable gland types, double compression cable gland, brass cable gland, and armoured cable gland size charts, along with downloadable PDF-ready references.
What is a Cable Gland?
A cable gland is a mechanical device designed to secure, seal, and protect electrical cables entering electrical panels, junction boxes, control panels, or enclosures.
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Ensures strain relief
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Provides environmental sealing
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Maintains earth continuity
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Prevents dust, moisture & vibration damage
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Supports safe cable glanding and termination
Cable Gland Types
Understanding cable gland types is essential for correct application and compliance.
Major Cable Gland Types
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Single Compression Cable Gland
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Double Compression Cable Gland
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Armoured Cable Gland
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Brass Cable Gland
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Unarmoured Cable Gland
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Industrial & Heavy-Duty Cable Glands
Cable Gland Types Chart
Cable Gland Type
Suitable Cable
Protection Level
Common Use
Single Compression Cable Gland
Unarmoured
Medium
Indoor panels
Double Compression Cable Gland
Armoured
High
Industrial plants
Brass Cable Gland
All types
High
Harsh environments
Armoured Cable Gland
SWA / AWA
Very High
Outdoor & hazardous
Single Compression Cable Gland
Double Compression Cable Gland
Armoured Cable Gland
Brass Cable Gland
Unarmoured Cable Gland
Industrial & Heavy-Duty Cable Glands
| Cable Gland Type | Suitable Cable | Protection Level | Common Use |
|---|---|---|---|
| Single Compression Cable Gland | Unarmoured | Medium | Indoor panels |
| Double Compression Cable Gland | Armoured | High | Industrial plants |
| Brass Cable Gland | All types | High | Harsh environments |
| Armoured Cable Gland | SWA / AWA | Very High | Outdoor & hazardous |
Cable Gland Size Chart & Selection Chart
Correct cable gland size chart in mm ensures secure fitting and long service life.
Standard Cable Gland Size Chart (MM)
| Cable Size (sq mm) | Gland Size | Cable OD (mm) |
|---|---|---|
| 1.5 – 2.5 sq mm | M20 | 6 – 12 |
| 4 – 6 sq mm | M25 | 10 – 18 |
| 10 – 16 sq mm | M32 | 14 – 25 |
| 25 – 35 sq mm | M40 | 20 – 32 |
| 50 – 70 sq mm | M50 | 26 – 40 |
| 150 sq mm cable gland size | M75 | 42 – 55 |
| 3.5 core 300 sq mm cable gland size | M90 | 55 – 70 |
Why use a Cable Gland Size Chart?
Selecting the right gland is just as important as choosing the right cable. That’s where the cable gland size chart and cable gland selection chart come in. These charts act as quick references to match the outer diameter of a cable with the correct gland size.
Ensures a tight and reliable seal
Prevents water, dust, or gas entry
Avoids loose fittings that may cause cable damage
Simplifies installation for engineers and electricians
A cable gland selection chart also highlights which gland type is suitable for armoured, unarmoured, or flexible cables. For example, a brass cable gland is often selected for armoured cables in oil & gas industries, while a waterproof cable gland is chosen for outdoor solar or marine applications.
Cable Gland Size Chart for Armoured Cable :
Double Compression Cable Gland
A double compression cable gland provides two-stage sealing:
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Inner seal on cable insulation
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Outer seal on armour
Benefits
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Superior mechanical retention
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Excellent IP protection
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Ideal for armoured cable gland applications
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Prevents armour loosening
Double Compression Cable Gland Size Chart
| Cable Size | Gland Size |
|---|---|
| 16 sq mm | M32 |
| 35 sq mm | M40 |
| 70 sq mm | M50 |
| 150 sq mm | M75 |
| 300 sq mm | M90 |
Single Compression Cable Gland
A single compression cable gland seals only the outer sheath, making it suitable for unarmoured cables.
Applications
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Control panels
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Lighting systems
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Low-stress installations
Brass Cable Gland
A brass cable gland is preferred for corrosion resistance, durability, and long-term reliability.
Why Choose Brass Cable Glands?
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High mechanical strength
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Excellent conductivity
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Resistant to heat & chemicals
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Suitable for industrial cable glanding
Armoured Cable Gland
An armoured cable gland is specifically designed for SWA/AWA cables, ensuring secure armour termination.
Armoured Cable Gland Size Chart
| Armoured Cable Size | Recommended Gland |
|---|---|
| 10 sq mm | M32 |
| 25 sq mm | M40 |
| 70 sq mm | M50 |
| 150 sq mm | M75 |
| 300 sq mm | M90 |
Cable Gland Accessories
Essential cable gland accessories improve safety and installation quality.
Common Accessories
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Lock nuts
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Earth tags
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Reducers & adapters
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Shrouds
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Breather drain plugs
Connector & Thread Types
Cable glands are available with:
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Metric threads
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PG threads
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NPT threads
Correct connector selection ensures tight enclosure sealing.
Installation & Maintenance
Best Practices
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Follow correct cable and gland size
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Ensure proper torque tightening
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Use appropriate sealing washers
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Inspect periodically for loosening or corrosion
Correct cable glanding and termination extends system lifespan.
Certifications & Compliance
High-quality cable glands comply with:
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IP66 / IP68
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IS standards
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IEC standards
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ATEX (for hazardous areas)
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Correct cable gland HSN code for GST compliance
Global Reach – Why Choose Exgrip?
Exgrip delivers precision-engineered cable glands designed for industrial reliability, compliance, and performance, serving diverse electrical and infrastructure projects worldwide.
Conclusion & Call-to-Action
Selecting the right cable gland, whether it’s a waterproof cable gland, brass cable gland, or using the correct cable gland accessories, is vital for industrial safety and system reliability.
At Exgrip, we provide a full range of cable glands, connectors, and accessories, certified with ATEX, IECEx, IP, RoHS, and REACH, suitable for any industrial or hazardous application.
📩 Talk to our technical team today at Exgrip.com
📞 Or call us directly for quick assistance!
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📞 Phone: +91 9537118899
🌐 Website: www.exgrip.com
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FAQs
What is the purpose of a cable gland?
A cable gland secures, seals, and protects cables entering electrical equipment.
Which cable gland is best for armoured cables?
A double compression cable gland is ideal for armoured cables.
How do I select cable gland size?
Use a cable gland size chart in mm based on cable OD and core size.
Are brass cable glands suitable for outdoor use?
Yes, brass cable glands offer excellent corrosion resistance.
Exgrip provides industry-standard cable gland size chart PDF references.
A cable gland secures, seals, and protects cables entering electrical equipment.
