KRAUS & NAIMER Main Switches and Maintenance Switches

6 1 Valid for lines with grounded common neutral termination, overvoltage category III, pollution degree 3. Values for other supply systems on request. 2 Suitable for no load switching applications (AC-20A) above 690 V. 3 The value after the slash is valid for switches 6 pole. 4 Connecting for cable lug. Technical Data in accordance with IEC 60947-3, EN 60947-3, VDE 0660 part 107, IEC 60204, EN 60204, VDE 0113 Nominal ratings for North America (UL) see Catalog 150 5 . Rated Values Insulation voltage U i 1 min. voltage Impulse withstand voltage U imp 1 Thermal current I u open = I th I the enclosed Breaking capacity 220 V/240 V 380 V/440 V 660 V/690 V Main Switch Voltage Rating Disconnection property up to 1 Utilization Category AC-21A Switch disconnectors for resistive load I e AC-3 Direct 3 phase, 3 pole switching of 220 V/240 V single motors 380 V/440 V 660 V/690 V 1 phase, 2 pole 220 V/240 V 380 V/440 V AC-23A, Switch dis- 3 phase, 3 pole AC-23B connectors 220 V/240 V for motor 380 V/440 V circuits, main 660 V/690 V switches etc. 1 phase, 2 pole 220 V/240 V 380 V/440 V Power loss per contact at I u Resistance to vibration 7 Resistance to shock 7 Short Circuit Protection Max. fuse size (gL-characteristic) Rated short-time withstand current (1s-current) Max. Permissible Wire Gage 6 Single-core or stranded wire Flexible wire with sleeve Flexible AWG wires (without sleeve) Connecting bolts Flat copper busbar Auxiliary Contacts Rated Values Insulation voltage U i 1 Impulse withstand voltage U imp 1 Thermal current I u open = I th I the enclosed AC-15 Operational current I e 220 V/240 V 380 V/440 V Short Circuit Protection Max. fuse size (gL-characteristic) Max. Permissible Wire Gage 6 Single-core or stranded wire Flexible wire with sleeve Flexible AWG wires (without sleeve) V V kV A A A A A V A kW kW kW kW kW kW kW kW kW kW W A A mm 2 AWG MCM mm 2 AWG MCM mm mm V kV A A A A A mm 2 AWG mm 2 AWG 690 8 800 2 690 800 2 800 2 690 800 2 690 on request 4 6 6 6 6 6 6 6 20 16 25 20 25 32 32 40 20 16 25 20 25 32 32 40 120 160 180 200 250 220 300 300 120 160 180 200 250 220 300 300 80 160 125 160 180 135 210 150 690 8 690 690 690 690 690 690 690 20 16 25 20 25 32 32 40 2,2 3 4 3,5 4 5,5 5,5 7,5 3,7 5,5 5,5 6,5 7,5 7,5 11 11 3,7 5,5 5,5 6,5 7,5 7,5 11 11 1,1 1,5 2 2,5 3 1,5 2,5 3,2 5 5,5 3 4,5 5,5 5,5 7 5,5 9 7,5 5,5 7,5 7,5 10 12 11 16 15 5,5 13 7,5 15 17 11 22 15 1,5 2 2,5 3,3 4,2 2,2 3,7 4,5 5,5 7,5 0,9 0,2 0,7 0,3 0,3 1,1 0,4 1 C C A C C A C A C C B C C B C B 20 25 35 35 35 35 35 50 130 400 350 450 500 430 850 500 2,5 6 6 6 6 6 10 16 12 10 10 10 10 10 8 6 – – – – – – – – 2,5 4 4 4 4 4 6 10 12 12 10 12 12 10 10 6 – – – – – – – – – – – – – – – – – – – – – – – – 690 8 440 500 440 440 500 440 690 4 8 4 6 4 4 6 4 6 20 10 10 10 10 10 10 16 20 10 10 10 10 10 10 16 6 2,5 2,5 2,5 2,5 2,5 2,5 6 4 1,5 1,5 1,5 1,5 1,5 1,5 3 20 10 10 10 10 10 10 16 2,5 1,5 1,5 1,5 1,5 1,5 1,5 2,5 12 14 14 14 14 14 14 12 2,5 1,5 1,5 1,5 1,5 1,5 1,5 2,5 12 16 16 16 16 16 16 14 KG10 KG20 KG32 KG10A KH16 KG20A KH20 KH25 KG32A KG41 KG10B KH16B KG20B KH20B KH25B KG32B KH32 KG41B < back to table of contents >