How EMC Shielding Works – Protect Your Equipment
Protect your installation against electromagnetic interference with the right EMC solutions
Electromagnetic interference can cause downtime, data errors, and costly interruptions. EMC shielding with shield clamps, EMC cable glands and EMC bushings provides control and safety.
Protect your installation against electromagnetic interference with the right EMC solutions
Electromagnetic interference can cause downtime, data errors, and costly interruptions. EMC shielding with shield clamps, EMC cable glands and EMC bushings provides control and safety.
Why is EMC Important?
- Electromagnetic interference (EMI) can arise from motors, frequency converters, radio signals, and high-frequency components.
- Interference can lead to downtime, data errors, or reduced service life of electronics.
- EMC (Electromagnetic Compatibility means that equipment functions without disturbing or being disturbed by other electronics.
How Do EMC Cable Glands Work?
- Create a 360° contact between the cable screen and the box
- Divert interference to ground, e.g via bus bars
- Combine sealing (IP65–IP68) and strain relief with shielding
When Should You Choose EMC Glands?
- In installations with high electromagnetic exposure
- When working with sensitive electronics in automation, telecom, medical technology, or energy
- When both IP-rated sealing and EMC shielding are required
Examples from Bimed
- Standard EMC glands in nickel-plated brass
- EMC versions in stainless steel for tough environments
- Special inserts for different cable diameters
- Compatible with accessories such as reducers, locknuts, and seals
Comparison Table
The table below provides an overview of different EMC solutions, their function, applicable standards and typical areas of use:
| Product | Function | Standard | Example |
|---|---|---|---|
| Cable Clamps | 360° screen relief | EN 55011 | Automation & Robotics |
| EMC cable glands | Density + shielding | EN 62444 | Telecom |
| EMC bushings | Multi-screw fitting | IEC 61000 | Energy |
Summary
- Cable Clamps used where cables need to be quickly and easily grounded with effective shield relief.
- EMC cable glands is the best choice when you need both sealing (IP65–IP68) and EMC shielding in control cabinets or enclosures.
- EMC bushings Suitable for installations with many cables and provides a flexible, tight and interference-free feedthrough.
More information
Standards
- EN 55011 – industrial disruptions
- EN 61000-6-2 – immunity
- EN 62444 – cable entries
Industry Use Cases
- Automation: frequency converter
- Telecom base stations
- Energy: power grid, high interference levels
FAQ – Frequently Asked Questions about EMC shielding
What is the difference between standard and EMC cable glands?
EMC glands have a conductive contact surface that connects the cable screen to the box and protects against interference.
Do EMC glands provide the same sealing as standard ones?
Yes, they often achieve IP65–IP68 while providing shielding.
Do I need EMC glands in every installation?
No, they are mainly needed where there is a risk of electromagnetic interference.
Can I use EMC cable glands in plastic enclosures?
Yes, but shielding works best in metal enclosures or when the cable shield is connected to ground via a bus bar.
What accessories are available?
Reducing inserts, seals, nuts and blind plugs can also be used with EMC models.
Do you need help choosing EMC shielding?
Our experts will help you find the right cabinet for your application.
