SCHURTER’s successful FMAB NEO single-phase filter series is now offered with enhanced asymmetrical attenuation performance in higher frequencies, achieved by adding a ground line choke on the earth conductor. The new filter series offers a simple solution to filtering critical earth conductor currents generated by today’s power conversion technologies, such as those using high-speed switching power supplies, frequency converters, and motor drives.
Due to the inherent electromagnetic interferences being generated in and between different systems, inadequately suppressed interferences can affect the operation of the equipment or other nearby devices. To meet these EMC challenges, engineers are searching for high-performance filters, which will also fit in smaller spaces. In addition to the current-compensated choke on the line and neutral conductor, the FMAB NEO offers a second choke on the earth line. The ground line choke is located between the filter input and output. With the two earth connections at the input and output, the earth connection at the main input is insulated from the housing. This ensures that possible high-frequency interference currents on the earth conductor cannot bypass the filter via the housing. Applications with critical high-frequency earth line currents include medical and laboratory equipment, audio and video, as well as industrial automation systems. Medical filters without Y-capacitors especially benefit from an improved asymmetrical attenuation in the higher frequency range due to the earth conductor choke.
The single-stage FMAB NEO filter family is ENEC and cURus approved. Rated current range is 1-60 A at 40°C. The temperature range is from -40 °C to +100 °C with deratings according to rated current. Rated voltage is 125/250 V. Variations include models with PE Choke, Protection Class II, Standard leakage current at 1 mA and Medical low leakage M80 or M5. Mounting options include bolt and nut or quick-connect terminals. Wire leads are also available on request. Pricing for the FMAB NEO PE-Choke starts at $22.00 each at 100-pieces. Link to datasheet. Link to landing page.
