Model No: single phase power filter
Single Phase Power Filter for Reliable EMI Suppression in Industrial Applications
DOREXS Single Phase Power Filters are engineered to suppress conducted EMI on AC power lines, improving power quality while helping electrical equipment comply with international EMC standards.
✔ Rated Current: 1A-100A
✔ Rated Voltage: 115/250VAC
✔ Frequency: 50/60Hz
✔ single stage & double stage
✔ Excellent Common Mode & Differential Mode Noise Suppression
✔ Compact Metal Enclosure
✔ UL、CB、CE & RoHS Compliant
✔ OEM & Custom EMI Filter Available
✔ Rated Current: 1A-100A
✔ Rated Voltage: 115/250VAC
✔ Frequency: 50/60Hz
✔ single stage & double stage
✔ Excellent Common Mode & Differential Mode Noise Suppression
✔ Compact Metal Enclosure
✔ UL、CB、CE & RoHS Compliant
✔ OEM & Custom EMI Filter Available
Quantity :
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Eliminate Electromagnetic Interference in Your Single-Phase Applications
Single phase power filters suppress electrical noise on single-phase power lines, delivering clean, stable AC power to the equipment that depends on it. Whether your application involves switching power supplies, motor drives, or sensitive digital circuits, electromagnetic interference (EMI) traveling along the power line degrades performance, causes malfunctions, and blocks regulatory approval. A well-designed single phase EMI filter intercepts that conducted noise-both common mode and differential mode-before it reaches your load, so your device operates exactly as intended.
DOREXS single phase filters are engineered to protect sensitive equipment from voltage spikes and RFI from the AC mains, ensure compliance with EMC standards, and deliver high performance noise suppression across the frequency spectrum that matters most.
DOREXS single phase filters are engineered to protect sensitive equipment from voltage spikes and RFI from the AC mains, ensure compliance with EMC standards, and deliver high performance noise suppression across the frequency spectrum that matters most.
Why Use Single Phase Power Filter?
| ✔ Superior EMI Suppression | ✔ Equipment Protection | ✔ Regulatory Compliance |
| DOREXS single phase EMI filters provide high differential mode attenuation alongside effective common mode rejection, keeping electrical noise off your power line and out of your circuits. | Single-phase filters enhance the reliability of electronic devices by filtering power-line transients. | Single-phase filters help ensure compliance with EMC standards including UL, CE, and medical-grade requirements. With DOREXS filters installed, your product is positioned to meet emissions and immunity regulations the first time through testing. |
| ✔ Built for Demanding Environments | ✔ Easy Installation | ✔ Wide Current Range |
| Operating temperature ranges from –25 °C to +85 °C, robust surge withstand capability, and rigorous quality testing mean DOREXS single phase filters deliver long-term reliability in the harshest industrial settings. | Multiple mounting options-chassis mount, DIN rail, panel mount-and connection types including terminal blocks and wire leads make integration straightforward. These filters are compact and easily integrated into smaller devices without redesigning your enclosure. | Available in multiple current ratings suitable for everything from compact electronic devices to high-power industrial machinery. |
| ✔ Custom Engineering Support | ||
| DOREXS offers customized electrical parameters, leakage current options, mounting configurations, terminal styles, and attenuation characteristics to meet unique customer requirements. |
Technical Specifications
Parameter | Specification |
| Product Type： | single phase power filter(single-stage/Multi-stage) |
| Rated Current： | 1A-100A |
| Rated Voltage： | 250 VAC single phase |
| Frequency: | 50/60 Hz |
| EMI Suppression Range: | 10 kHz – 30 MHz |
| Leakage Current (Industrial): | < 2.5 mA at 250 VAC |
| Insulation Resistance: | ≥100MΩ |
| Leakage Current (Medical): | ≤ 0.1 mA (optional variant) |
| Hi-Pot / Insulation: | 1,800–2,500 VDC, 2 seconds (line-line and line-ground) |
| Operating Temperature: | –25°C to +85°C (up to +100°C for premium designs) |
| Housing Material： | Nickel-plated iron casing |
| Terminal Options: | Threaded stud (M6+), FASTON tabs, terminal block |
| Certifications: | UL 1283, CB, CE, RoHS compliant |
EMI filters are rated for specific current and voltage ranges. High performance EMI filters provide high attenuation and low leakage current-the single phase power filter delivers both. Full datasheets and insertion loss curves (common mode and differential mode) are available through our download center.
Product Pictures
Detail Picture
 |  |  |
Screw Terminal | Insert | Line |
Overall Dimension（±1mm)
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| Insert | Screw Terminal | DIN Rail |
Circuit Diagram
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Single stage | Multi-stage |
Ideal Applications
Single-phase power filters are used in consumer electronics and medical devices, as well as across telecom and industrial sectors. Ideal for:
Industrial Automation Engineers
Industrial automation requires single-phase filters to operate reliably in noisy environments. CNC machines, robot controllers, variable frequency drives, and sensor networks all benefit from clean single phase power. Explore industrial EMI solutions.
Lighting & LED Driver Applications
Switching power supply–based LED drivers generate significant high frequency noise. DOREXS filters with configurable leakage current profiles address lighting-specific EMC and safety regulations.
Medical Device Manufacturers
Single-phase filters are tailored for applications like medical devices, where strict leakage current limits and IEC 60601-1-2 compliance are mandatory. DOREXS offers medical-grade solutions with low leakage and high attenuation.
Telecom & Data Infrastructure
Single-phase filters are used in telecommunication and medical applications where signal integrity and equipment uptime are critical.
Consumer Electronics & Appliance Designers
From computer power supplies to home appliances, emi filters ensure products meet FCC and CE emissions limits while protecting internal circuitry from power line disturbances.
OEMs across various applications
HVAC systems, telecommunications equipment, heavy-duty appliances, office equipment, and consumer electronics requiring reliable radio frequency interference suppression at high current levels. Single-phase filters enhance performance in consumer electronics and are critical for telecommunications equipment.
If electromagnetic interference is degrading your device performance, blocking compliance, or causing field failures, a properly specified single phase EMI filter is the right solution.
Insertion Loss Performance
The DOREXS single phase power filter is engineered to provide stable insertion loss performance against both:
- Common Mode Noise Reduction-Helps suppress interference transmitted between line conductors and ground.
- Differential Mode Noise Reduction-Reduces noise generated directly across power conductors.
Mechanical Design
This filter supports compact panel integration for industrial systems.
Installation recommendations:
- Install close to power entry points
- Minimize cable loop area
- Separate input and output wiring
- Ensure proper grounding connection
- Avoid parallel routing of noisy cables
Correct installation significantly improves EMC suppression performance.
Certifications & Compliance
DOREXS EMI filters are manufactured under rigorous quality control processes to meet international EMC standards.
Compliance support provided includes:
- UL compliance
- CB compliance
- CE compliance
- RoHS compliance
- EMC testing support
- ISO 9001 certification
- Industrial quality management
- OEM documentation support
Custom EMI Filter Solutions
As a professional EMI filter manufacturer, DOREXS provides OEM and ODM EMI filter solutions tailored to specific EMC requirements.
Customization options include:
- Current Rating Adjustment
- Low Leakage Current Design
- Terminal Configuration
- Mounting Structure
- Enhanced Attenuation Performance
- Medical Grade Design
- High Reliability Industrial Design
Our engineering team can assist with EMC troubleshooting, filter selection, and custom filter development for demanding industrial applications.
Why Choose DOREXS?
Professional EMI Filter Manufacturer
With years of experience in EMC suppression technology, DOREXS specializes in designing and manufacturing high-performance EMI power filters for industrial applications worldwide.
Complete Product Portfolio
We provide comprehensive EMI filtering solutions including:
- Single Phase EMI Filters
- Three Phase EMI Filters
- Medical EMI Filters
- DC EMI Filters
- IEC EMI Filters
- Custom EMI Filters
Custom Design Support
Our engineering team works closely with customers to develop customized power filters based on electrical specifications, installation requirements, EMC targets, and environmental conditions.
Quality Assurance
Every product undergoes comprehensive electrical performance testing before shipment to ensure consistent quality and reliability.
Fast Engineering Support
From filter selection to EMC troubleshooting, our engineers provide professional technical assistance throughout your project.
Global Customer Support
DOREXS products are trusted by industrial equipment manufacturers, automation companies, medical device manufacturers, and system integrators in multiple international markets.
Ready to Improve Your Power Quality?
Stop letting electromagnetic interference compromise your product performance, delay your compliance timeline, or threaten equipment reliability.
Choose DOREXS single phase power filters and get the noise suppression, protection, and regulatory compliance your application demands-backed by decades of EMC filter design expertise and a team ready to support custom requirements.
Contact DOREXS today for a technical consultation, request a quote for standard or custom single phase filters, or ask about quantity pricing and stock availability. Fast delivery and comprehensive engineering support included.
Choose DOREXS single phase power filters and get the noise suppression, protection, and regulatory compliance your application demands-backed by decades of EMC filter design expertise and a team ready to support custom requirements.
Contact DOREXS today for a technical consultation, request a quote for standard or custom single phase filters, or ask about quantity pricing and stock availability. Fast delivery and comprehensive engineering support included.
FAQ
What is a single phase power filter?
A single phase power filter is an EMI filter installed on an AC power line to suppress conducted electromagnetic interference, reduce electrical noise, and improve EMC performance.
How does a single phase power filter work?
The filter combines inductors and capacitors to attenuate both common mode and differential mode noise while allowing normal AC power to pass with minimal loss.
What is the difference between a power filter and an EMI filter?
A single phase power filter is typically a type of EMI filter specifically designed for AC power lines. Both terms are often used interchangeably in industrial applications.
Can your filters help pass EMC testing?
Yes. Properly selected filters significantly reduce conducted emissions and improve the likelihood of meeting international EMC compliance requirements. Final compliance depends on the overall equipment design.
Do you provide custom power filters?
Yes. We offer OEM and ODM services with customized current ratings, housing sizes, terminal configurations, attenuation characteristics, and electrical specifications.
What's the difference between medical-grade and standard filters?
Medical-grade single phase filters feature ultra-low leakage currents (typically below 100 µA), meet IEC 60601-1-2 EMC requirements, and carry safety certifications specific to patient-contact equipment. Standard industrial versions may allow higher leakage for greater attenuation.
How do I select the right current rating for my application?
Match the filter's rated current to your equipment's maximum steady-state current draw, accounting for inrush and transient surges. Rated currents for single-phase filters range from 1 to 60 A. DOREXS provides selection guidance to help you find the ideal match for your load.
Can DOREXS provide custom single phase filter designs?
Yes. Custom single-phase filters can meet specific industry standards, attenuation targets, leakage current limits, mechanical dimensions, and connector types. Contact our engineering team to discuss your application requirements.
What certifications do DOREXS filters carry?
DOREXS filters carry UL, CB, CE, and RoHS certifications. Medical versions comply with IEC 60601-1-2. Specific product lines hold additional regional approvals. Read more about our certifications and standards.
How do single phase filters compare to three phase solutions?
Single phase filters are designed for single phase power systems (line, neutral, ground), while three phase EMI filters handle three-line industrial power. The choice depends entirely on your electrical system topology. For a detailed comparison, read our guide on three phase vs single phase EMI filters.
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