The Heatfast HF1230 is a self-regulating trace heating cable that can be used for frost protection of exposed pipework and temperature maintenance applications. It has parallel bus wires that apply voltage along its entire length and a conductive core that allows it to be cut to any length on site. As the core temperature increases, the number of conductive paths decreases, lowering the heat output in a self-regulating manner along the entire length of the cable.