enclosed isolators 3, 4, 6 and 8 poles page <1> 26/05/12 v1.1 www.element14.com www.farnell.com www.newark.com box 1 (20 to 40 a): box 2 (63 to 80 a) and (25 to 40 a 4pbb): box 3 (100 to 125 a): change over box: rotary isolator (load break switch) dimensions box size height width depth depth (including switch) 1 (20 to 40 a) 125 100 70 118 2 (63 to 80 a) and 25 to 40 a 4pbb) 175 125 90 134 3 (100 to 125 a) 280 190 130 190 change over box ac-21 switch ratings dimensions : millimetres canadian standards: can / csa-c22.2 no.14 american standards: ul508 iec and european standards: iec 60947-1 and 3, en60947, vde 0660-107
enclosed isolators 3, 4, 6 and 8 poles page <2> 26/05/12 v1.1 www.element14.com www.farnell.com www.newark.com isolator rating (ac-21) measure switch code lb20 lb25 lb32 lb40 lb63 lb80 lb100 lb125 rated operational voltage, ue iec / en / vde volts v 690 690 690 690 690 690 690 690 ul / csa 600 600 600 600 600 600 600 600 main switch: isolating voltage up to 750 750 750 750 750 750 750 750 resistance to surge pulse voltage, uimp kv 6 6 6 6 6 6 6 6 rated uninterrupted current, iu amperes a 16 20 25 32 40 63 100 125 rated uninterrupted current, ie iec / en / vde ac-22 amperes a 16 20 25 32 40 63 100 125 ac-21 a 20 25 32 40 63 80 ac-1 ul / csa 16 20 25 32 40 63 rated operational power at 50 to 60 hz (iec / en / vde) iec / en / vde ac-23 a 3 phase 3 pole 220 to 240 v kw 3 4 5.5 7.5 11 15 22 30 380 to 440 v 5.5 7.5 11 15 18.5 30 37 45 500 to 690 v 7.5 11 22 45 55 ac-3 a 3 phase 3 pole 220 to 240 v 2 3 4 5.5 7.5 11 18.5 22 380 to 440 v 3 5.5 7.5 11 18.5 22 30 37 500 to 690 v 5.5 7.5 11 37 45 short circuit capacity (iec / en / vde) maximum fuse size (type gl) amperes a 16 25 25 32 40 63 100 125 rated fused short circuit current ka 5 5 30 30 30 30 30 30 ul / csa power rating dol 3 phase, 3 pole 120 v hp 1.5 1.5 3 3 5 7.5 7.5 7.5 240 v 3 3 7.5 7.5 10 15 15 15 480 v 7.5 7.5 15 20 20 25 30 40 600 v 10 10 20 25 30 30 40 50 1 phase 120 v 0.5 0.5 1.5 2 3 4.5 3 3 240 v 1.5 1.5 2 3 4 6 7.5 7.5
enclosed isolators 3, 4, 6 and 8 poles page <3> 26/05/12 v1.1 www.element14.com www.farnell.com www.newark.com isolator rating (ac-21) measure switch code lb20 lb25 lb32 lb40 lb63 lb80 lb100 lb125 short circuit capacity (ul / csa) maximum fuse size amperes a 25 25 50 50 70 70 100 125 fuse (being certified with j type fuses) type - j j j, rk5 j j rated fuse short circuit current amperes ka 5 5 5 5 5 5 10 10 terminal cross section single / multiple strand wire minimum mm 2 1.5 1.5 1 1 4 4 6 6 maximum 6 6 10 10 16 16 70 70 fine strand wire with sleeve minimum 0.5 0.5 0.75 0.75 2.5 2.5 4 4 maximum 6 6 6 6 10 10 50 50 american wire gauge - awg 12 12 8 8 6 6 1 1 recommended tightening torque for terminals - nm 0.8 0.8 1.7 1.7 1.7 1.7 2.5 2.5 duty category table current category typical applications relevant iec product standard ac-1 ac-3 ac-15 ac-21 ac-22 ac-23 non-inductive or slightly inductive loads, resistance furnaces squirrel-cage motors: starting, switching off motors during running control of ac electromagnetic loads switching of resistive loads, including moderate overloads switching of mixed resistive and inductive loads switching of motor loads or other highly inductive load 947-4 947-3 947-5-1 947-3 947-3 947-3 dc dc-1 dc-13 non-inductive or slightly inductive loads, resistance furnaces control of dc electromagnets 947-4 947-5-1
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