EMC / EMI Filters
01 / Power line filters
Reliable Power Line Filtering
Single-phase, three-phase, and custom EMI filters engineered for cleaner power and easier compliance.
Power Line Filters & EMC Solutions
Cleaner power. Fewer compliance headaches.
WELLEMC designs and builds single-phase, three-phase, and three-phase + neutral EMI filters that suppress interference at the source — helping your equipment pass EMC testing and run reliably in the field.
In-house design, production, and testing from our base in Jiangmen, Guangdong, with standard series and custom-engineered solutions.
Single to 3-phase
Full filter range
Standard & custom
OEM / ODM available
Published specs
Verified ratings
Our products
Single-Phase EMI Filter
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Compact, panel-mount filters for industrial and consumer equipment needing reliable EMC compliance.
Focus
EMI power line filters
Coverage
Single, three-phase & 3PH+N
For
Equipment makers worldwide
WELLEMC power line filters in production and testing.
Jiangmen, Guangdong
Why WELLEMC
Filters engineered to certify, not just to sell.
Every WELLEMC filter is built around one goal: suppress interference at the source so your equipment passes EMC testing and runs reliably in the field.
01 / Compliance1
Designed to certify
Filters engineered to help equipment pass EN/IEC EMC testing with margin, not luck.
CE / UL / RoHS
02 / Range2
Single to three-phase
Single-phase, three-phase, and three-phase + neutral series covering most equipment power-entry needs.
1A – high current
03 / Support3
Engineering, not just sales
In-house design and testing from our base in Jiangmen, with standard series and custom-engineered solutions.
OEM / ODM
Our products
Filter series for every power entry
Start with the families equipment makers reach for first — single-phase units for compact devices, three-phase filters for industrial drives, and three-phase + neutral models for mixed loads. Every series is engineered for EMC compliance.
Standard series are shown first. Custom-engineered and OEM/ODM options are available across the full range.
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Three Phase Filters
DLC Three-Phase Power Line Filter (WF-T Series)
WELLEMC DLC three-phase power line filters suppress conducted EMI/RFI on the AC mains of three-phase equipment. Compact book-style housing; the WF-T series spans 6–990 A across 16 models (WF-T6-C to WF-T990-C). Helps equipment meet IEC/EN 61000-6-2 and 6-4. Ideal for VFDs, servo drives, industrial automation, robotics and power conversion.
Single Phase Filters
DLC Single-Phase Power Line Filter (WF-S Series)
WELLEMC DLC single-phase power line filters suppress conducted EMI/RFI at the AC inlet of single-phase equipment. Compact book-style housing; the WF-S series covers 10–35 A (0.75–3.7 kW): WF-S10-C, WF-S15-C, WF-S20-C, WF-S35-C. Helps equipment meet IEC/EN 61000-6-2 and 6-4. Ideal for VFDs, servo drives, test equipment, industrial controls and medical devices.
Three Phase + Neutral
DLC 3-Phase + Neutral Power Line Filter (WF-TN Series)
WELLEMC DLC three-phase-plus-neutral power line filters suppress conducted EMI/RFI on the 3-phase+neutral mains of mixed and unbalanced loads. Compact book-style housing; the WF-TN series spans 6–170 A across 9 models (WF-TN6-C to WF-TN170-C). Helps equipment meet IEC/EN 61000-6-2 and 6-4. Ideal for medical IT systems, industrial automation, HVAC, lifts and power conversion with neutral currents.
Build quality
Engineered to perform, built to last.
Every WELLEMC filter is assembled from selected components and tested before it ships — so it keeps suppressing interference for the life of your equipment.
Selected components
High-purity copper and grade-matched ferrite chosen for stable, low-loss attenuation.
Rugged enclosures
Metal and molded cases built for panel, DIN-rail, and chassis mounting.
Verified before shipping
Every batch is tested against published specs in our Jiangmen, Guangdong lab.
Where our filters go
Quiet power for demanding equipment.
Across industrial, medical, and power markets
Keeps EMC noise out of sensitive test and measurement gear.
Test & measurement
Single-phase series
Holds attenuation steady under variable motor loads.
Industrial automation
Three-phase series
Clean power entry for patient-connected devices.
Medical equipment
Custom 3PH+N
Insights & guides
Field notes, application guides, and updates
Practical EMC guidance, application notes, and company updates from the WELLEMC engineering team.
View all articles
FeaturedAug 16, 2026
How Power Line Filters Help Equipment Pass EMC Testing: IEC/EN 61000-6-2 & 6-4
Conducted EMI/RFI is a common reason equipment fails EMC certification. Understand common-/differential-mode noise and how DLC filters attenuate it to keep your drive within emission limits.
Latest articles
Aug 16, 2026Selection Guides
How to Select the Right DLC Filter for Your VFD: By Drive Current & Power
Match the DLC filter's WF model to your drive's input current (A) and output power (kW): single-phase S series 10–35 A, three-phase T series 6–990 A, three-phase + neutral TN series 6–170 A.
Aug 16, 2026Product Technology
DLC Series Compact Power Line Filters: Single-Phase, Three-Phase & Three-Phase + Neutral
WELLEMC DLC power line filters suppress conducted EMI/RFI on the AC supply of single- and three-phase equipment. 29 WF models, book-style compact housing, help meet IEC/EN 61000-6-2 and 6-4.
Common questions
Questions buyers ask before they order
Quick answers about lead times, customization, certifications, and shipping.
Still need help? Talk to our engineering team and we will point you in the right direction.
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Contact
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Email
274979331@qq.com
Phone
+86 19260661703
Office
No. 53 Xiayang Road, Hetang Town, Pengjiang District, Jiangmen, Guangdong, China
Hours
Mon-Fri, 9:00-18:00 PT
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