... Cartridge heater Technical Specification: 1.Wattage Tolerance: +5%, -10% 2.Resistance tolerance: +10%, -5% 3.Voltages available: 380V,240V, 220V,110V ... .Thermocouple Location: Disc End, Sheath, Center of Heater; 12.Insulation resistance (cold): ≥ 50 MΩ; 13.Maximum leakage current (cold): ≤ 0.5 ... , 5. Industrial: Packaging Equipment, Hole Punches, Hot Stamp. cartridge heater coil