Slow Acting Fuse Time lag Low breaking capacity Fuse type : 5 x 20 mm slow Number of pieces : 10 Test specifications opening time : 1.5 In: t > 1 H 2.1 In: max. 2 min 2.75 In: 600 ms < t < 10 s 4 In: 150 ms < t < 3 s 10 In: max. 300 ms specs : IEC127, BS4265 and CEE4 enduranc: Cyclic testing as specified by IEC127 and BS4265 Fuse speed : T (slow)