The 4RB2021-3CC50 from Siemens is a Power Capacitor with Capacitance 45.5 uF, Voltage Rating 220 V, Peak Current 10000 A, Mass 0.4 Kg, Operating Temperature -40 to 55 Degree C. Tags: Screw Mount, Film Capacitor. More details for 4RB2021-3CC50 can be seen below.