Blade fuse NGT

fast-acting

NGT series fuse link for protection of semiconductor devices is suitable for the industrial electric distribution devices of AC 50Hz, rated voltage up to 1000V, rated current up to 630A, which is mainly used as the short-circuit protection for the emiconductor devices. Normal operating condition and installation condition 3.1 - Ambient temperature: -5ÿ~+40ÿ, average value within 24h does not exceed +35 ÿ, and the average value within one year should be less than this value. 3.2 - Altitude of installation place does not exceed 2000m 3.3 - Atmosphère condition The air is clean, and its relative humidity does not exceed 50% when the ambient temperature is at 40 ÿ. It is allowed relatively high humidity at the relatively low temperature, for example, the relative humidity can reach 90% when 20ÿ, and it should take considération of the condensation produced on the surface of product that is due to the temperature variation. 3.4 - Voltage The maximum value of system voltage does not exceed 105% of fuse's rated voltage; 3.5 - Installation category: III 3.6 - Grade of pollution: not less than 3 3.7 - Installation position This sériés of fuse can be vertically, horizontally or obliquely installed at those opération occasions of without obvious shake, impact vibration. Note: if the fuse is used in the différent from the normal installation specified condition, it should be negotiated with the manufacturer.