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Rails Tubular Electric Switch Heaters keep switches open in severe winter weather. Quality alloy sheath construction ensures trouble-free operation and long service life. Standard heaters for switches up to 45? in length are rated up to 500 watts/foot in various sizes with round and flat profiles. Custom voltages, lengths and wattages available. Non-separable and quick-disconnect terminals available in standard 10? leads or lengths to suit. Mounting hardware available as bolt-on or snap-on.