We Design. We Build. We Deliver.
Explore our flagship series of passband, single-phase, three-phase, and feed-through radio frequency interference (RFI) suppression filters tested to IEC/EN standards.
In the Swiss industrial landscape—spanning high-precision CNC machinery in the Watch Valley (Jura Arc), advanced robotics in Zurich, medical technology in Bern, and high-altitude solar projects in the Valais Alps—electromagnetic compatibility (EMC) is non-negotiable. Radio Frequency Interference (RFI) can severely degrade sensor accuracy, compromise high-speed bus communications (such as EtherCAT, PROFINET, and CANopen), and breach strict federal regulatory mandates enforced by the Federal Inspectorate for High Current Installations (ESTI).
As a global premier RFI filter manufacturer supplying original equipment manufacturers (OEMs) and system integrators across Switzerland, our engineering methodology focuses on delivering high Information Gain through custom magnetic design, optimized LC/RC passive filter networks, and rigorous suppression curve matching.
Whether your application requires compliance with EN 61000-6-3 (residential and light industrial) or EN 61000-6-4 (heavy industrial environments), our manufacturing facility engineers custom filter topologies—including single-stage LC, dual-stage Pi-filters, Delta-configured 3-phase networks, and hermetically sealed feed-through capacitors—to ensure your equipment passes ESTI, CE, and UL certification on the first compliance test.
Matching the optimal filter architecture to your specific electromagnetic interference profile and operating environment.
| Filter Series / Topology | Operating Voltage / Current | Attenuated Frequency Band | Typical Leakage Current | Primary Swiss Industry Application |
|---|---|---|---|---|
| Single-Stage LC Entry Module | 125V – 250VAC / 1A – 15A | 150 kHz – 30 MHz | < 0.25 mA | Medical diagnostic monitors, lab instruments (Zurich/Bern MedTech) |
| Dual-Stage High-Insertion Pi Filter | 250VAC / 5A – 50A | 10 kHz – 30 MHz | < 0.50 mA | Precision CNC spindle drives, laser cutting tools (Jura Arc Machine Tooling) |
| Nanocrystalline 3-Phase Heavy Industrial | 480V – 690VAC / 20A – 600A | 10 kHz – 100 MHz | < 3.5 mA | Ultra-fast EV charging networks (Fastned/Ionity Swiss highways), Alpine Solar Inverters |
| Feed-Through Screw Capacitors (8-32UNC) | 100V – 500VDC / 10A – 100A | 10 MHz – 1 GHz | N/A (DC Line) | RF shielded cabinets, military electronics, Swiss defense telecommunications |
| Low-Loss Microstrip RF Bandpass | Signal Level (< 10W) | Selective GHz Passband | N/A | 5G infrastructure, satellite earth stations, Swiss alpine microwave links |
Engineered to withstand the environmental, altitude, and regulatory demands of Swiss industrial hubs.
In the watchmaking and micro-mechanics sector across Neuchâtel, Biel/Bienne, and Solothurn, high-frequency servo drives generate significant common-mode feedback. Our 3-phase high-voltage LC networks mitigate line harmonics, protecting sensitive encoder communications from corruption.
Swiss medical device manufacturers in Bern and Zurich must strictly observe IEC 60601-1 safety standard limits for patient leakage current. We design low-capacitance Y2 medical-grade RFI inlet filters that keep touch leakage under 5 µA while maintaining high differential mode attenuation.
Photovoltaic installations located in high-altitude environments like the Valais Alps suffer from severe ambient thermal swings and cosmic ionization risks. Our IP65-sealed nanocrystalline core chokes maintain high magnetic permeability down to -40°C without core saturation.
Switzerland's rapid expansion of EV charging corridors along the A1 and A2 autobahns requires high-power DC contactors and broad-spectrum EMI line filters. Our heavy-current filters reduce switching transients generated by 350kW DC chargers to pass CISPR 11 Class B limits.
Supplying components for Swiss rail infrastructure (SBB/CFF/FFS ecosystem) demands compliance with EN 50121-3-2 EMC standards for rolling stock. Our ruggedized RFI filters withstand continuous mechanical vibration, thermal cycling, and high electromagnetic stress.
1. Strict Compliance with the Swiss Low Voltage Electrical Products Ordinance (NEV / SR 734.26):
Switzerland aligns closely with European Union CE standards while maintaining independent oversight via ESTI. Electrical equipment commercialized in Switzerland must demonstrate non-interfering operation within the public low-voltage grid. Incorporating pre-certified EMI power line filters eliminates expensive re-engineering cycles at testing labs like Eurofins ETHZ or Montena Technology.
2. Adoption of Wide Bandgap (SiC/GaN) Power Converters:
Swiss industrial equipment manufacturers are rapidly transitioning from legacy IGBT switches to Silicon Carbide (SiC) MOSFETs to boost energy efficiency. However, faster switching rates (dv/dt > 50 kV/µs) shift radiated and conducted EMI into higher frequency spectra (10 MHz to 100 MHz). Our engineering team utilizes custom magnetic damping and low-parasitic LC winding techniques to suppress these high-band harmonics.
3. Derating Factors for Alpine High-Altitude Operation:
Many Swiss clean-tech applications operate at elevations exceeding 2,000 meters above sea level. At these altitudes, lower atmospheric pressure reduces the dielectric breakdown threshold of air. We supply custom RFI filters featuring enlarged creepage and clearance distances compliant with IEC 60664-1, preventing partial discharge breakdown in mountain installations.
From drawing-board circuit modifications to documented volume production, we back your engineering team every step of the way.
We modify termination leads, coil inductances, insertion loss curves, mounting footprints, and wire harnesses, issuing customer-specific part numbers under complete revision control.
Every single filter produced undergoes automated dielectric withstand (Hi-Pot), insulation resistance, contact resistance, and functional insertion loss checks prior to packaging.
Our product families are built to UL, cUL, CE, CSA, and RoHS/REACH specifications. Full material declarations and test reports ship with qualification samples.
We provide fast sample turnaround times for design-in qualification, ensuring your R&D team in Zurich, Basel, or Geneva meets project milestone deadlines.
By leveraging high-permeability nanocrystalline ribbon cores, our filters achieve superior attenuation curves in smaller housing volumes compared to traditional ferrite chokes.
Experiencing long lead times or end-of-life notices from legacy filter vendors? Our technical team provides direct pin-for-pin cross-references with full parameter matching.
Clear solutions to common technical, logistical, and compliance questions asked by engineers in Switzerland.
Our passive RFI filters are explicitly engineered to attenuate conducted emissions across the mandatory 150 kHz to 30 MHz band defined by CISPR 11 / EN 55011 (Class A and Class B). By inserting our pre-validated LC/RC filter modules directly at the power entry interface, your equipment significantly reduces noise emission levels, ensuring seamless compliance approval during ESTI audits or independent laboratory testing in Switzerland.
Standard catalog samples are dispatched via express air freight (DHL/FedEx) within 3 to 5 business days, reaching Swiss engineering centers within 48 hours of shipment. For customized housings or unique connector configurations, sample build lead times typically range between 2 to 3 weeks, accompanied by full English datasheets, 3D CAD step files, and test reports.
Yes. For medical devices used in hospitals and diagnostic clinics throughout Switzerland, touch current must remain extremely low to ensure patient safety. We produce dedicated medical-grade RFI filters configured without Y-capacitors (or with ultra-low capacitance values), maintaining ground leakage current well below 5 µA while still suppressing high-frequency differential noise.
Air density decreases at high elevations, reducing insulation breakdown voltages. For equipment installed above 2,000 meters in mountain locations like Zermatt or St. Moritz, we apply altitude correction factors per IEC 60664-1. This includes increasing terminal spacing, specifying higher dielectric potting resins, and verifying insulation withstand up to 3,000V AC/DC.
Absolutely. Custom mechanical and electrical engineering is one of our key strengths. We offer custom metal enclosure stamping, IP65/IP67 weatherproofing, custom cable assembly harnesses, specialized fast-on or screw terminals, and private-label laser marking with your company’s internal part numbers.
Ferrite cores are highly cost-effective for standard low-to-medium power applications. However, for compact high-current systems (such as EV fast chargers or 100kW solar inverters), nanocrystalline cores offer significantly higher saturation flux density (1.2 T vs. 0.4 T) and superior thermal stability. This allows us to design a filter that is up to 50% lighter and smaller while delivering better wideband attenuation.
Need custom insertion loss curves, localized compliance advice, or quick-turn OEM samples for your engineering project? Contact our application engineers today for immediate support.
