MAIN, SAFETY AND MAINTENANCE SWITCH www.krausnaimer.com 92 MAIN CATALOG ATEX units 2 x M25 ATEX cable glands, 2 x M32/M25 adaptors and 1 dummy plug M20 included Thermal current (I u/I th) Rating AC-23B (A) Name Art. no. 3-pole 3 x 400 V 25 A 7,5 kW KG20.T203/NL-EXRA.KNBOX 70022472 32 A 11 kW KG32.T203/NL-EXRA.KNBOX 70023921 40 A 15 kW KG41.T203/NL-EXRA.KNBOX 70023928 55 A 20 kW KG64.T203/NL-EXRA.KNBOX 70023934 EMC-Model 25 A 7,5 kW KG20.T203/NL-EXRC.*KNBOX 70022638 32 A 11 kW KG32.T203/NL-EXRC.*KNBOX 70023922 40 A 15 kW KG41.T203/NL-EXRC.*KNBOX 70023929 55 A 20 kW KG64.T203/NL-EXRC.*KNBOX 70022290 Thermal current (I u/I th) Rating AC-23B (A) Name Art. no. 3-pole 3 x 400 V 25 A 7,5 kW KG20.T103/NL-EXBA.KNBOX 70027276 32 A 11 kW KG32.T103/NL-EXBA.KNBOX 70022644 40 A 15 kW KG41.T103/NL-EXBA.KNBOX 70023925 55 A 20 kW KG64.T103/NL-EXBA.KNBOX 70023931 EMC-Model 25 A 7,5 kW KG20.T103/NL-EXBC.*KNBOX 70022632 32 A 11 kW KG32.T103/NL-EXBC.*KNBOX 70022932 40 A 15 kW KG41.T103/NL-EXBC.*KNBOX 70023926 55 A 20 kW KG64.T103/NL-EXBC.*KNBOX 70023932 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 configuration 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 KG20-KG64 12 – 16 Maximal number of locks Padlock device U-bolt-Ø Number of locks 6 3 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 22 115 190 102 M32 M20 26 101 128 31 5,3 80 7 ATEX Zone 22 and 21, 3-pole + 1NO/NC, IP66 ATEX 3-pole + 1NO/NC < Back to the catalog directory
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