FSU is an extremely high temperature self-regulating heating  cable, having an exposure limit of 250ºC, energised or not. It has easy terminations, and able to be cut-to-length. It has the safest ever self-regulating product range for extremely high temperature exposure; it will not overheat even when exposed to 250ºC when energised or switched off as it is inherently temperature-safe. It is ATEX and IECEx Approved.