Vishay Sfernice model, RSSD series Unique due to their ability to withstand intermittent overloads and to work in assemblies which are subject to severe impact / vibration conditions, these resistors demonstrate great mechanical strength High dissipation and excellent resistance to thermal stress Supplied with slider collar not set Removal of the slider increases the resistance by 5 → 10%. 2 EN fixing brackets are supplied separately in pairs (RS 788-5154).