Vishay Vitreous Resistors Series have great mechanical strength, high thermal shock strength, and are fireproof. Vishay Vitreous Resistors come in two styles: Adjustable Wirewound (RSSD) and Fixed Wirewound (RW).
-Vishay Vitreous Resistors Adjustable Wirewound (RSSD) medium and high power resistors are noted for their ability to withstand heavy transient and severe shock and vibration conditions. Standard RSSD resistors have a single adjustable collar.
-Vishay Vitreous Resistors Fixed Wirewound (RW) power resistors are extremely well suited to professional applications, where high power and excellent endurance are required. Five sizes cover the power range from 10 W to 80 W.