MAIN, SAFETY AND MAINTENANCE SWITCH www.krausnaimer.com 66 MAIN CATALOG Maximal number of locks Padlock device U-bolt-Ø Number of locks 6 3 2 x M25 ATEX cable glands, 2 x M32/M25 adaptors and 1 dummy plug M20 included Utilization category AC-23B (A) Thermal current (Ithe) Order number 3 x 400 V 3-pole 7,5 kW 25 A KG20.T203/NL-EXRA.KNBOX 11 kW 32 A KG32.T203/NL-EXRA.KNBOX 15 kW 40 A KG41.T203/NL-EXRA.KNBOX 20 kW 55 A KG64.T203/NL-EXRA.KNBOX EMC-Model 7,5 kW 25 A KG20.T203/NL-EXRC.*KNBOX 11 kW 32 A KG32.T203/NL-EXRC.*KNBOX 15 kW 40 A KG41.T203/NL-EXRC.*KNBOX 20 kW 55 A KG64.T203/NL-EXRC.*KNBOX Utilization category AC-23B (A) Thermal current (Ithe) Order number 3 x 400 V 3-pole 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 EMC-Model 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 Notice 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 con guration of the maintenance switch between FU and motor allows the use as disconnector 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. Cabel-Ø shield Shield clamp KG20-KG64 12 – 16 115 190 102 M32 M20 26 101 128 31 5,3 80 7 Maintenance and safety switch acc. to EC ATEX-Directive 2014/34/EU, equipment group II, Category 2, Zone 21, explosive atmosphere "Dust", mechanical impact resistance 7J Similar image EMC-Model 3-pole + 1NO/1NC L1 T1 L2 T2 L3 T3 31 32 43 44 3-pole + 1NO/1NC EMC L1 T1 L2 T2 L3 T3 13 14 21 22 ATEX Zone 22 and 21, 3-pole + 1NO/NC, IP 66 ATEX 3-pole ATEX units < Back to the catalog directory
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