The 4RB2125-3GA50 from Siemens is a Power Capacitor with Capacitance 37 uF, Voltage Rating 600 V, Peak Current 10000 A, Mass 0.8 Kg, Operating Temperature -40 to 55 Degree C. Tags: Screw Mount, Film Capacitor. More details for 4RB2125-3GA50 can be seen below.