FMAB & FMAD CEE Connectors with Line Filter Schurter FMAB 1-Phase and FMAB 3-Phase CEE Connectors with Line Filter provide an easy pre-wired solution with a universal flange for front or rear mounting and optimal filter position directly on the power entry. The FMAB connectors are effective against symmetrical interferences in a 300kHz to 100Mhz frequency range, while the FMAD connectors are effective against asymmetrical interferences in a 150kHz to 10Mhz frequency range. Schurter FMAB and FMAB connectors are designed for use in industrial and power distribution applications.