THE REX SYSTEM Protection while keeping the standard firmly in view 0 8 1 0 1 2 1 4 1 6 1 8 2 2 2 2 4 2 6 2 8 3 3 2 3 4 IKS times current rating rated current REX12 characteristic curve Schematic diagram REX12 with fixed current ratings Blade fuse Semi conductor LINE LOAD 4 A 4 A Tr ip t im e s 1 000 100 10 1 0 1 0 01 0 001 The internal fail safe element in the shape of a blade fuse is adapted directly to the current rating of the corresponding circuit protector thus ensuring easy adjustment to the cable cross section Thus the REX12 with 4 A contains a 4 A fuse to IEC 60127 4 2 UL248 14 and CSA248 14 Besides the UL508 and NEC Class2 approvals the REX12 exclusively meets the requirements of cable protection to EN60204 1 16

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