In modern industrial environments, electromagnetic compatibility (EMC) plays a critical role in maintaining signal integrity, operational safety, and regulatory compliance. As automation, data transmission, and control systems become more complex, the demand for EMC cable glands for shielded cables continues to grow.
Selecting the correct gland size, understanding cable size and gland size compatibility, and using certified ATEX cable glands are essential for reliable installations. This comprehensive guide covers EMC cable glands, cable gland size charts, cable gland accessories, applications, benefits, and selection criteria to help achieve optimal EMC performance and long-term reliability.
What is an EMC Cable Gland?
An EMC cable gland is a specialised cable entry device designed to terminate shielded or armoured cables while ensuring effective 360-degree electromagnetic shielding continuity. Unlike standard cable glands, EMC variants incorporate conductive elements that clamp directly onto the cable braid or foil shield.
-
Maintains electromagnetic shielding effectiveness
-
Prevents EMI and RFI interference
-
Provides mechanical strain relief
-
Ensures environmental sealing (IP66, IP67, IP68)
-
Supports compliance with EMC, ATEX, and IEC standards
EMC cable glands are widely used in environments where signal quality, data accuracy, and equipment safety are non-negotiable.
Types of EMC Cable Glands
-
Excellent conductivity
-
High corrosion resistance
-
Commonly nickel-plated
-
Suitable for industrial control panels
-
Superior mechanical strength
-
Ideal for harsh and corrosive environments
-
Widely used in food, pharma, and offshore industries
-
Enhanced EMC performance
-
Smooth surface finish
-
Reliable long-term shielding continuity
-
Suitable for unarmoured shielded cables
-
Compact design
-
Easy installation
-
For armoured and shielded cables
-
Improved sealing and retention
-
Common in hazardous and outdoor installations
EMC Cable Gland Size Chart & Selection Chart
Selecting the correct cable gland size based on cable size and gland size compatibility is critical for EMC performance and ingress protection.
Standard Cable Gland Size Chart
| Gland Size | Cable Diameter Range (mm) | Thread Type | Typical Use |
|---|---|---|---|
| M12 | 3 – 6 | Metric | Small signal cables |
| M16 | 4 – 8 | Metric | Control cables |
| M20 | 6 – 12 | Metric | Power & data cables |
| M25 | 10 – 17 | Metric | Industrial automation |
| M32 | 15 – 22 | Metric | Large shielded cables |
| M40 | 19 – 28 | Metric | Heavy-duty installations |
| M50 | 27 – 35 | Metric | Power distribution |
| M63 | 34 – 44 | Metric | Large diameter cables |
Cable Size and Gland Size Selection Chart
| Cable OD (mm) | Recommended Gland Size | EMC Suitability |
|---|---|---|
| 5 – 6 | M12 | Excellent |
| 7 – 9 | M16 | Excellent |
| 10 – 12 | M20 | High |
| 13 – 16 | M25 | High |
| 17 – 20 | M32 | Very High |
| 21 – 26 | M40 | Very High |
| 27 – 33 | M50 | Maximum |
| 34 – 40 | M63 | Maximum |
Using the correct gland size ensures consistent EMC contact, secure clamping, and optimal environmental sealing.
EMC Cable Gland Accessories
To enhance performance and adaptability, cable gland accessories are commonly used:
-
Earth Tags – Improve grounding and bonding
-
Locknuts – Secure gland position inside enclosures
-
Shrouds – Provide additional environmental protection
-
Reducers & Adapters – Match gland size with enclosure entry
-
Breather Drain Plugs – Manage condensation in panels
-
Blanking Plugs – Seal unused entries
Using certified cable gland accessories ensures system integrity and compliance with industry standards.
EMC Cable Gland Connectors & Threads
EMC cable glands are available with multiple connector thread types to suit global installations:
Metric (M) Threads
PG Threads
NPT Threads
BSP Threads
Choosing the correct connector type ensures proper enclosure fitment and maintains EMC performance across international standards.
Installation & Maintenance of EMC Cable Glands
-
Strip cable jacket carefully to expose shielding
-
Ensure 360-degree shield contact
-
Tighten gland to manufacturer torque specifications
-
Avoid paint or coatings on contact surfaces
-
Use appropriate cable gland size chart
-
Periodically inspect for loosening
-
Check grounding continuity
-
Replace worn seals
-
Verify EMC contact integrity
Proper installation directly impacts EMC efficiency, safety, and long-term performance.
Certifications & Compliance
High-quality EMC cable glands comply with international standards:
ATEX Cable Glands for hazardous areas
IECEx Certification
IP66 / IP67 / IP68 Protection
RoHS Compliance
EN 62444 / IEC 62444
EMC Directive Compliance
Certified ATEX cable glands are mandatory for explosive atmospheres involving gas, dust, or vapours.
Global Applications of EMC Cable Glands
Industrial automation
Oil & gas installations
Chemical processing units
Power generation facilities
Data centres & telecom infrastructure
Railway & transportation systems
Renewable energy systems
Why Choose High-Quality EMC Cable Glands?
Superior EMC shielding performance
Extended cable and equipment life
Reduced downtime and interference
Compliance with global safety standards
Reliable operation in harsh environments
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!
Contact Us:
📞 Phone: +91 9537118899
🌐 Website: www.exgrip.com
📩 Request a Quote: Contact Page
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!
Contact Us:
📞 Phone: +91 9537118899
🌐 Website: www.exgrip.com
📩 Request a Quote: Contact Page
FAQs
1. What is the purpose of an EMC cable gland?
EMC cable glands maintain shielding continuity and prevent electromagnetic interference.
2. How do I select the correct cable gland size?
Refer to a cable gland size chart based on the cable outer diameter.
3. Are EMC cable glands suitable for hazardous areas?
Yes, certified ATEX cable glands are designed for explosive environments.
4. Do EMC cable glands require accessories?
Accessories like earth tags and locknuts enhance grounding and stability.
5. Can EMC cable glands be reused?
They can be reused if seals and clamping elements remain intact.
