Three-phase power EMI filter , industrial-grade EMI suppression solution

Three-phase power filters designed specifically for high-power equipment ensure stable system operation and EMC compliance.

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Three-phase power EMI filters are high-performance filters designed for three-phase systems. They effectively suppress common-mode and differential-mode interference on power lines, ensuring the safety and stability of industrial equipment, power systems, and automation devices.
DOREXS three-phase filters offer high current carrying capacity, strong anti-interference performance, and excellent thermal stability. They are widely used in variable frequency drives, servo systems, UPS, elevator control, and new energy equipment.They are typically rated at 380/440VAC and 10-1000A, with higher voltage and current specifications available upon request.

Technical Parameters

Parameter	Value
Rated Voltage	380/440VAC, 50/60Hz
Rated Current	10-1000A
Wiring Method	Optional Y-type/Δ-type wiring
Insertion Loss	High insertion loss (>60dB) covering 150kHz–30MHz
Operating Temp	-25°C ~ +85°C
Safety Approvals	CE, RoHS
Typical Mounting	Chassis installation/Power cord/Bolt/Copper busbar terminal/Guide rails

Support three-phase three-wire and three-phase four-wire systems, support customized current, voltage, installation method and terminal structure

The above parameters are all for standard products. If they cannot meet your requirements, we can provide you with exclusive customized services, including parameter customization, appearance customization and logo customization.

Features & Benefits

Technical Advantages

Simultaneous suppression of three-phase common-mode and differential-mode interference
Low-temperature rise design suitable for continuous high-load operation
High-quality magnetic core and capacitor materials ensure long-term stability
Compatible with surge protection modules

Application Advantages

Ensure reliable system operation and reduce equipment malfunctions.
Reduce conducted interference from the power grid, helping customers easily pass EMC certification.
Meet the high EMC standards of Industry 4.0 and automation systems.

Overall Dimension（±1mm)

three phase emi power filter overall dimensions

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Electrical Performance Chart

Applications

Three-phase EMI power filters are often used in industrial sectors with high EMC standards due to their strong interference suppression performance.

Application Areas	Brief Description
⚙️ Industrial Automation	PLC Control Systems, Servo Drives, Inverters, etc.
🔋 New Energy Equipment	Solar Inverters, Energy Storage Systems, Wind Power Control Systems
🏢 Elevator and Building Control	Elevator Control Cabinets, HVAC Systems, Power Distribution Cabinets
⚡ UPS and Data Centers	Three-Phase UPS, Power Voltage Stabilization Systems
🚛 Power and Rail Transit	Power Conversion Equipment, Train Power Supply Systems

Product Recommendations

Model	Rated Current	Rated Voltage	Insertion Loss (dB)	Terminal Type	Certification	Applications
DAC1	10A	380/440VAC	60dB@150kHz-30MHz	Inserts/bolts/guide rails	CE	Servo Drives
DAC3	30A	380/440VAC	60dB@150kHz-30MHz	Inserts/bolts/guide rails	CE	Industrial Controls
DAC44	100A	380/440VAC	60dB@150kHz-30MHz	Inserts/bolts/guide rails	CE	New Energy Systems

Support OEM/ODM customization (current, voltage, terminal type, shielding shell are all optional).

Why Choose DOREXS Three Power EMI Power Filters ?

DOREXS three-phase EMI power filters offer enhanced performance and flexible configuration, making them ideal for industrial automation, power equipment, and new energy industries. Their current range, from 1A to 1000A+, meets the demands of applications requiring stringent EMC standards. Their compact design significantly reduces installation space and effectively suppresses broadband electromagnetic interference. DOREXS also offers professional OEM/ODM customization services, providing cost-effective, reliable, and stable filtering solutions at highly competitive prices.

Contact us to get the latest three phase EMI power filter prices.

FAQ

1. Who are we?

DOREXS was founded in 2008 and is a manufacturer focusing on EMI solutions and power quality solutions with rich industry experience. Professional R&D technical team and advanced production equipment support us to provide cost-effective products and solutions.

2. What is the difference between a three-phase filter and a single-phase filter

Three-phase filters are designed specifically for three-phase power systems. They can simultaneously filter out common-mode and differential-mode interference between the three phases and are suitable for high-power devices.

3. Do they meet low leakage current requirements in medical applications?

Yes, we offer designs with a leakage current of <0.5mA that complies with the IEC 60601 standard.

4. Can they be used in new energy inverter systems?

Absolutely. DOREXS three-phase filters are widely used in photovoltaic inverters and energy storage systems, ensuring purer and more stable output power.

5. Do we support customization?

DOREXS not only provides standard products, but also supports product appearance customization and product parameter customization. We provide cost-effective EMI solutions and power quality solutions.