Three phase emi filters help to extract unwanted current conducted through wiring or cables, while allowing desirable currents to flow freely. This slide can help you to understand more about three phase power line filters.

1. THREE PHASE EMI FILTERS
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WHAT IS EMI FILTERS?
• EMI stands for Electromagnetic interference. It is defined as the electrical or magnetic
interference that interrupt the intended currents an electronic device is supposed to receive.
• It is also called as RFI (radio frequency interference).

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WHAT DOES AN EMI FILTER DO?
• When attached to circuits or devices, it can suppress electromagnetic noise transmitted
through conduction. These EMI filters extract any unwanted current conducted through wiring
or cables, while allowing desirable currents to flow freely.

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HOW DOES AN EMI FILTER WORKS?
• Most electromagnetic noise is in a higher frequency range, so EMI filters are often low-pass
filters that sift out high frequencies while letting lower frequencies pass through. Different EMI
line filters suppress specific frequencies of noise, while allowing others to flow unimpeded.

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THREE PHASE EMI FILTERS
• Three phase EMI filters help to block
higher level of noises.
• Three phase power line EMI filters used
in medical equipment, industrial
machine and motors tools, test
equipment, etc.

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TYPES OF EMI FILTERS
• Single phase EMI filters
• Three phase EMI filters
• Military EMI filters
• DC EMI filters
• Tempest EMI filters
• Facility/SCIF EMI filters

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COMMERCIAL/INDUSTRIAL
THREE PHASE EMI FILTERS (DELTA)
• PF303S 520VAC / 6A TO 60A / M5
STUDS
• PF305S 520VAC / 10A TO 75A / M5
STUDS
• PF307S 520VAC / 10A TO 100A /
M5/M6 STUDS
• PF309S 520VAC / 30A TO 150A /
M5/M6/M10 STUDS

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COMMERCIAL/INDUSTRIAL
THREE PHASE + NEUTRAL EMI FILTERS (WYE)
• PF400S 520VAC / 6A TO 50A / M5
STUDS
• PF403S 520VAC / 10A TO 60A / M5
STUDS
• PF405S 520VAC / 20A TO 70A / M5
STUDS
• PF407S 520VAC / 30A TO 100A /
M5/M6 STUDS

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MILITARY/COTS
THREE PHASE EMI FILTERS (DELTA)
• PFM300S 520VAC / 10A TO 80A / 10-
32 STUDS

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MILITARY/COTS
THREE PHASE + NEUTRAL EMI FILTERS (WYE)
• PFM400S 520VAC / 10A TO 80A / 10-
32 STUDS

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CONTACT US
At Premier Filters, we have an extensive line of standard EMI power line filters and unlimited custom
capability to address any EMI power line filter requirement. Coupled with our in-house safety and EMI
conducted emissions test labs.
Products Range:
• EMI/RFI FILTERS
• Three Phase Filters
• Single Phase Filters
• Mil/COTS EMI Filters
• DC FILTERS
• Custom Filters

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PREMIER FILTERS
Address: Premier Filters, Inc.
952 N. Elm Street
Orange, CA 92867
Phone : +1-657-226-0091
FAX : +1-657-223-6495
Email : info@premieremc.com
Site: www.premieremc.com