KRAUS & NAIMER - ATEX Maintenance and Safety Switches

3 pole ATEX MAIN SWITCHES AND MAINTENANCE SWITCHES Zone 21, 3 pole / 3 pole + 1 NO/NC, IP 66 3 pole + 1NO/1NC 3 pole + 1NO/1NC 3 pole 3 pole (1-0-2) L1 T1 L2 T2 L3 T3 13 14 21 22 L1 T1 L2 T2 L3 T3 31 32 43 44 L1 T1 L2 T2 L3 T3 1T3 2T3 1L3 1T2 2T2 1L2 1T1 2T1 1L1 115 190 102 M25/M32 M20 26 101 128 31 5,3 80 7 Maintenance and Safety switch acc. to EC ATEX- Directive 94/9/EG equipment group II, Category 2, Zone 21, Indication of field D Mechanical impact resistance 7J KG20 - KG32: 2 x M25 ATEX cable glands and 1 dummy plug M20 included. KG41 - KG64: 2 x M25 ATEX cable glands, 2 x M32/M25 adaptors and 1 dummy plug M20 included. Utilization Category AC-23B (A) Thermal Current l u /l th Ordner number With auxiliary contacts (1 NO, 1 NC) 7,5 kW 25 A KG20.T103/NL-EXBA.KNBOX 11 kW 32 A KG32.T103/NL-EXBA.KNBOX 15 kW 40 A KG41.T103/NL-EXBA.KNBOX 20 kW 55 A KG64.T103/NL-EXBA.KNBOX Without auxiliary contacts 7,5 kW 25 A KG20.T103/NL-EXB.KNBOX 11 kW 32 A KG32.T103/NL-EXB.KNBOX 15 kW 40 A KG41.T103/NL-EXB.KNBOX 20 kW 55 A KG64.T103/NL-EXB.KNBOX EMC-Model with auxiliary contacts (1 NO, 1 NC) 7,5 kW 25 A KG20.T103/NL-EXBC*KNBOX 11 kW 32 A KG32.T103/NL-EXBC*KNBOX 15 kW 40 A KG41.T103/NL-EXBC*KNBOX 20 kW 55 A KG64.T103/NL-EXBC*KNBOX Note for EMC model: Maintenance Switches for EMC-compliant connection of FU-regulated drives use shield clips. These clips are used to continue the cable shield circuit through the enclosure. The configuration of the Maintenance Switch between FU and motor allows the use as Disconnec- tor up to 400 Hz and as Load Switch at frequencies from 40 Hz to 100 Hz. Each Maintenance Switch has as standard 2 auxiliary contacts, 1 NC and 1 NO. Via the NO (20 ms leading) the FU can be switched off before the main contacts of the switch open. For the rating of the switch please note that the motor may have approx. 10 % higher charging rate due to the higher loss in FU-operation e.g. a motor with 7,5 kW rating the motor current has to be determined with 16,7 A instead of 15,2 A.w Utilization Category AC-23B (A) Thermal Current l u /l th Ordner number 1-0-2-Model with auxiliary contacts (1 NO, 1 NC) 7,5 kW 25 A KG20.T903/NL-EXBA.KNBOX 20 kW 32 A KG32.T903/NL-EXBA.KNBOX Maximal number of locks Padlock device U-bolt-Ø Number of locks 6 3 Cable-Ø shield Shield clamp Type Ø min-max KG20-KG64 12-16 4 ATEX Units