MAIN CHARACTERISTICS range of product ISFL250..630 range FUPACT product name FUPACT ISFL device short name ISFL400 product or component type FUSE-SWITCH DISCONNECTOR device application PROTECTION signalling function INTEGRATED FUSE MONITOR COMPLEMETARY CHARACTERISTICS poles description 1 X 3P SWITCHABLE protected poles description 1 X 3F fuse type DIN fuse size NH2 network type DC network frequency 50 60 HZ control type FUSE CARRIERS HANDLE provision for padlocking PADLOCKABLE mounting mode VERTICAL mounting support BUSBARS mounting location ONE ABOVE THE OTHER [Ie] rated operational current AC-21B : 400 A AC 50/60 Hz 220/240 V [Ith] conventional free air thermal current 400 A 40 C POWER DISSIPATION PER FUSE 34 W [Ithe] conventional enclosed thermal current 400 A 40 C POWER DISSIPATION PER FUSE 34 W VERTICAL rated duty UNINTERRUPTED [Ui] rated insulation voltage 800 V AC 5060 HZ CONFORMING TO EN 60947-3 [Uimp] rated impulse withstand voltage 12 KV CONFORMING TO IEC 947-3 [Ue] rated operational voltage 690 V AC 5060 HZ [Im] rated making and breaking capacity ICN 100 A 690 V suitability for isolation YES contact position indicator NO visible break YES contact operation SINGLE BREAK