The GWS 300 Ni from Vishay is a Power Resistor with Resistance 100 to 30000 ohm, Tolerance ± 5 to 10 %, Power Rating 200 W, Voltage Rating 2500 V, Temperature Operating Range -55 to 350 Degree C. Tags: Screw Mount. More details for GWS 300 Ni can be seen below.