ELV Directive EMI Filters and RFI Filters
Last Updated: April 1, 2025
Description
EMI (Electromagnetic Interference) and RFI (Radio Frequency Interference) filters are designed to suppress electromagnetic and radio frequency interference that can disrupt the normal operation of electronic devices. These filters are crucial in ensuring that electronic equipment functions correctly by minimizing the noise that can interfere with their operation.
Working Principle
EMI and RFI filters work by using a combination of inductors and capacitors to block or shunt unwanted noise signals. Inductors are used to eliminate most in-phase common-mode interference, while capacitors shunt high-frequency noise to the ground. This combination effectively reduces the electromagnetic disturbances that can affect the performance of electronic devices. The filters are particularly useful because they help maintain the integrity of signals in electronic circuits, ensuring that devices operate as intended without interference from external noise sources.
Applications
EMI and RFI filters are used in a wide range of applications where electromagnetic interference can be an issue. Specific examples include their use in commercial white goods connected to the Internet of Things (IoT), where they help ensure reliable communication and operation. They are also employed in various industrial and consumer electronics to comply with regulatory standards such as the European Union's EMC Directive, which mandates that electronic products must not emit excessive electromagnetic disturbances.
Advantages over other EMI Filters and RFI Filters
One advantage of certain EMI and RFI filters is their ability to provide a high level of insertion loss, which is the ratio of noise that would pass through without a filter to the noise that passes through with the filter installed. This high insertion loss capability makes them particularly effective in environments with significant electromagnetic interference, ensuring better performance and compliance with regulatory standards.
Limitations
A limitation of EMI and RFI filters is that they cannot bear a CE mark, as there are no appropriate EC directives that apply to them specifically. However, they can obtain an ENEC mark, which serves a similar purpose in bypassing application procedures for signatories. This limitation can affect the ease of market entry for products using these filters in certain regions.
Considerations
When selecting EMI and RFI filters, several considerations should be taken into account. These include initial costs, operating expenses, durability, accuracy, and replacement and maintenance costs. Filters must be chosen based on their rated voltage and current, as well as their leakage current and insertion loss characteristics. Additionally, the form factor, such as whether the filter is surface mount, through-hole, or feedthrough, can impact the overall design and cost of the electronic system.
from TE Connectivity
Configuration Features. Wiring Configuration : DELTA (3 wire + ground). Electrical Characteristics. Current Rating (AMP) : 1. Leakage Current (Max) (230VAC, 50Hz) : 3. Operating Voltage (VAC) : 440. Mechanical Attachment. Product Mount Type : Chassis Mount. [See More]
- Filter Type: Three Phase
- Operating Temperature: -25 to 85
- Rated Current: 1
- Standards and Certifications: ELV Directive
from TE Connectivity
Configuration Features. Wiring Configuration : DELTA (3 wire + ground). Electrical Characteristics. Current Rating (AMP) : 15. Leakage Current (Max) (230VAC, 50Hz) : 3. Operating Voltage (VAC) : 440. Mechanical Attachment. Product Mount Type : Chassis Mount. [See More]
- Filter Type: Three Phase
- Operating Temperature: -25 to 85
- Rated Current: 15
- Standards and Certifications: ELV Directive; RoHS
from TE Connectivity
Configuration Features. Wiring Configuration : DELTA (3 wire + ground). Electrical Characteristics. Current Rating (AMP) : 50. Leakage Current (Max) (230VAC, 50Hz) : 5. Operating Voltage (VAC) : 440. Mechanical Attachment. Product Mount Type : Chassis Mount. [See More]
- Filter Type: Three Phase
- Operating Temperature: -25 to 85
- Rated Current: 50
- Standards and Certifications: ELV Directive; RoHS
from TE Connectivity
Configuration Features. Wiring Configuration : WYE (4 wire + ground). Electrical Characteristics. Current Rating (AMP) : 3. Leakage Current (Max) (230VAC, 50Hz) : 3. Operating Voltage (VAC) : 440. Mechanical Attachment. Product Mount Type : Chassis Mount. [See More]
- Filter Type: Three Phase
- Operating Temperature: -25 to 85
- Rated Current: 3
- Standards and Certifications: ELV Directive; RoHS
from TE Connectivity
Configuration Features. Wiring Configuration : WYE (4 wire + ground). Electrical Characteristics. Current Rating (AMP) : 15. Leakage Current (Max) (230VAC, 50Hz) : 3. Operating Voltage (VAC) : 440. Mechanical Attachment. Product Mount Type : Chassis Mount. [See More]
- Filter Type: Three Phase
- Operating Temperature: -25 to 85
- Rated Current: 15
- Standards and Certifications: ELV Directive; RoHS
from TE Connectivity
Configuration Features. Wiring Configuration : WYE (4 wire + ground). Electrical Characteristics. Current Rating (AMP) : 50. Leakage Current (Max) (230VAC, 50Hz) : 5. Operating Voltage (VAC) : 440. Mechanical Attachment. Product Mount Type : Chassis Mount. [See More]
- Filter Type: Three Phase
- Operating Temperature: -25 to 85
- Rated Current: 50
- Standards and Certifications: ELV Directive; RoHS
from TE Connectivity
Configuration Features. Wiring Configuration : DELTA (3 wire + ground). Electrical Characteristics. Current Rating (AMP) : 150. Leakage Current (Max) (230VAC, 50Hz) : 11. Operating Voltage (VAC) : 440. Mechanical Attachment. Product Mount Type : Chassis Mount. [See More]
- Filter Type: Three Phase
- Operating Temperature: -25 to 85
- Rated Current: 150
- Standards and Certifications: ELV Directive; RoHS
from TE Connectivity
Configuration Features. Wiring Configuration : WYE (4 wire + ground). Electrical Characteristics. Current Rating (AMP) : 10. Leakage Current (Max) (230VAC, 50Hz) : 10. Operating Voltage (VAC) : 440. Mechanical Attachment. Product Mount Type : Chassis Mount. [See More]
- Filter Type: Three Phase
- Operating Temperature: -25 to 85
- Rated Current: 10
- Standards and Certifications: ELV Directive; RoHS
from TE Connectivity
Configuration Features. Wiring Configuration : WYE (4 wire + ground). Electrical Characteristics. Current Rating (AMP) : 80. Leakage Current (Max) (230VAC, 50Hz) : 10. Operating Voltage (VAC) : 440. Mechanical Attachment. Product Mount Type : Chassis Mount. [See More]
- Filter Type: Three Phase
- Operating Temperature: -25 to 85
- Rated Current: 80
- Standards and Certifications: ELV Directive; RoHS
from TE Connectivity
Configuration Features. Wiring Configuration : WYE (4 wire + ground). Electrical Characteristics. Current Rating (AMP) : 150. Leakage Current (Max) (230VAC, 50Hz) : 15. Operating Voltage (VAC) : 440. Mechanical Attachment. Product Mount Type : Chassis Mount. [See More]
- Filter Type: Three Phase
- Operating Temperature: -25 to 85
- Rated Current: 150
- Standards and Certifications: ELV Directive; RoHS
from TE Connectivity
Configuration Features. Wiring Configuration : WYE (4 wire + ground). Electrical Characteristics. Current Rating (AMP) : 200. Leakage Current (Max) (230VAC, 50Hz) : 15. Operating Voltage (VAC) : 440. Mechanical Attachment. Product Mount Type : Chassis Mount. [See More]
- Filter Type: Three Phase
- Operating Temperature: -25 to 85
- Rated Current: 200
- Standards and Certifications: ELV Directive; RoHS
from TE Connectivity
Configuration Features. Wiring Configuration : DELTA (3 wire + ground). Electrical Characteristics. Current Rating (AMP) : 180. Leakage Current (Max) (250VAC, 50Hz) (MAMP) : .92. Operating Voltage (VAC) : 480. Mechanical Attachment. Product Mount Type :... [See More]
- Filter Type: Three Phase
- Operating Temperature: -10 to 40
- Rated Current: 180
- Standards and Certifications: ELV Directive; RoHS
from TE Connectivity
Configuration Features. Wiring Configuration : DELTA (3 wire + ground). Electrical Characteristics. Current Rating (AMP) : 230. Operating Voltage (VAC) : 480. Mechanical Attachment. Product Mount Type : Chassis. Product Type Features. Filtering Requirements :... [See More]
- Filter Type: Three Phase
- Operating Temperature: -10 to 40
- Rated Current: 230
- Standards and Certifications: ELV Directive; RoHS
from TE Connectivity
Configuration Features. Wiring Configuration : DELTA (3 wire + ground). Electrical Characteristics. Current Rating (AMP) : 36. Leakage Current (Max) (250VAC, 50Hz) (MAMP) : .52. Operating Voltage (VAC) : 480. Mechanical Attachment. Product Mount Type :... [See More]
- Filter Type: Three Phase
- Operating Temperature: -10 to 40
- Rated Current: 36
- Standards and Certifications: ELV Directive; RoHS
from TE Connectivity
Configuration Features. Wiring Configuration : DELTA (3 wire + ground). Electrical Characteristics. Current Rating (AMP) : 50. Leakage Current (Max) (250VAC, 50Hz) (MAMP) : 3.25. Operating Voltage (VAC) : 480. Mechanical Attachment. Product Mount Type :... [See More]
- Filter Type: Three Phase
- Operating Temperature: -10 to 40
- Rated Current: 50
- Standards and Certifications: ELV Directive; RoHS
from TE Connectivity
Configuration Features. Wiring Configuration : DELTA (3 wire + ground). Electrical Characteristics. Current Rating (AMP) : 80. Leakage Current (Max) (250VAC, 50Hz) (MAMP) : 3.25. Operating Voltage (VAC) : 480. Mechanical Attachment. Product Mount Type :... [See More]
- Filter Type: Three Phase
- Operating Temperature: -10 to 40
- Rated Current: 80
- Standards and Certifications: ELV Directive; RoHS
from TE Connectivity
Configuration Features. Wiring Configuration : DELTA (3 wire + ground). Electrical Characteristics. Current Rating (AMP) : 110. Leakage Current (Max) (250VAC, 50Hz) (MAMP) : 3.25. Operating Voltage (VAC) : 480. Mechanical Attachment. Product Mount Type :... [See More]
- Filter Type: Three Phase
- Operating Temperature: -10 to 40
- Rated Current: 110
- Standards and Certifications: ELV Directive; RoHS
from TE Connectivity
Configuration Features. Wiring Configuration : DELTA (3 wire + ground). Electrical Characteristics. Current Rating (AMP) : 150. Leakage Current (Max) (250VAC, 50Hz) (MAMP) : 3.25. Operating Voltage (VAC) : 480. Mechanical Attachment. Product Mount Type :... [See More]
- Filter Type: Three Phase
- Operating Temperature: -10 to 40
- Rated Current: 150
- Standards and Certifications: ELV Directive; RoHS
from TE Connectivity
Configuration Features. Wiring Configuration : DELTA (3 wire + ground). Electrical Characteristics. Current Rating (AMP) : 7. Operating Voltage (VAC) : 480. Mechanical Attachment. Product Mount Type : Chassis. Product Type Features. Filtering Requirements :... [See More]
- Filter Type: Three Phase
- Operating Temperature: -10 to 50
- Rated Current: 7
- Standards and Certifications: ELV Directive; RoHS
from TE Connectivity
Configuration Features. Wiring Configuration : DELTA (3 wire + ground). Electrical Characteristics. Current Rating (AMP) : 16. Operating Voltage (VAC) : 480. Mechanical Attachment. Product Mount Type : Chassis. Product Type Features. Filtering Requirements :... [See More]
- Filter Type: Three Phase
- Operating Temperature: -10 to 50
- Rated Current: 16
- Standards and Certifications: ELV Directive; RoHS
from TE Connectivity
Configuration Features. Wiring Configuration : DELTA (3 wire + ground). Electrical Characteristics. Current Rating (AMP) : 30. Leakage Current (Max) (250VAC, 50Hz) (MAMP) : 33. Operating Voltage (VAC) : 480. Mechanical Attachment. Product Mount Type : Chassis. [See More]
- Filter Type: Three Phase
- Operating Temperature: -10 to 50
- Rated Current: 30
- Standards and Certifications: ELV Directive; RoHS
from TE Connectivity
Configuration Features. Wiring Configuration : DELTA (3 wire + ground). Electrical Characteristics. Current Rating (AMP) : 42. Operating Voltage (VAC) : 480. Mechanical Attachment. Product Mount Type : Chassis. Product Type Features. Filtering Requirements :... [See More]
- Filter Type: Three Phase
- Operating Temperature: -10 to 50
- Rated Current: 42
- Standards and Certifications: ELV Directive; RoHS
from TE Connectivity
Configuration Features. Wiring Configuration : DELTA (3 wire + ground). Electrical Characteristics. Current Rating (AMP) : 55. Operating Voltage (VAC) : 480. Mechanical Attachment. Product Mount Type : Chassis. Product Type Features. Filtering Requirements :... [See More]
- Filter Type: Three Phase
- Operating Temperature: -10 to 50
- Rated Current: 55
- Standards and Certifications: ELV Directive; RoHS
from TE Connectivity
Configuration Features. Wiring Configuration : DELTA (3 wire + ground). Electrical Characteristics. Current Rating (AMP) : 75. Operating Voltage (VAC) : 480. Mechanical Attachment. Product Mount Type : Chassis. Product Type Features. Filtering Requirements :... [See More]
- Filter Type: Three Phase
- Operating Temperature: -10 to 50
- Rated Current: 75
- Standards and Certifications: ELV Directive; RoHS
from TE Connectivity
Configuration Features. Wiring Configuration : DELTA (3 wire + ground). Electrical Characteristics. Current Rating (AMP) : 100. Operating Voltage (VAC) : 480. Mechanical Attachment. Product Mount Type : Chassis. Product Type Features. Filtering Requirements :... [See More]
- Filter Type: Three Phase
- Operating Temperature: -10 to 50
- Rated Current: 100
- Standards and Certifications: ELV Directive; RoHS