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Self-regulating electric heating cable for freeze protection or temperature maintenance up to 65 °C of pipes, valves, tanks, vessels etc. Rated power 31 W/m at 10 °C, for a supply voltage of 230 V 1P. The heating cable consists of 2 parallel supply wires embedded in a conductive polymer core whose resistivity varies according to temperature. Insulation and protection are provided by 2 thermoplastic sheaths and a copper braid provides mechanical protection and allows connection to earth. A 30 mA circuit breaker or C-curve earth leakage switch is required. Supply voltage from 208 to 277 V max. ATEX and IECEx certified equipment for gas environments, zones 1 or 2, temperature class T5.