Schaffner RB Series 3 Phase Common Mode Chokes. Characteristics. Radial through-hole inductor in vertical or horizontal PCB format Maximum current up to 50A High saturation core material Small size and open construction for convection or forced cooling Operating temperature: -40°C +125°C. Applications. EMI noise filtering on AC and DC lines Switch mode power supplies and UPS Charging stations, Fast chargers and Convertors Power supply filtering for midsize power range drives