Page 179 of Current Catalog by Moeller Electric USA

04/015 thermistor tripping units for protection of motors with p.t.c thermistors embedded in their windings terminal marking to en 50 005 flow diagrams led display green supply voltage is applied yellow device has tripped red device has tripped/short circuit in sensor circuit notes ul csa iec ce l emt6 emt6-db emt6-dbk auto suitable for the protection of eex e motors ptb certificate no 3.53-14606/96 can be snap mounted on an en 50 022 top-hat rail a1 power tripped 21 13 us a2 t1 t2 22 14 at rk 250 per sensor 6 sensors at rk 100 per sensor 9 sensors in the winding to be provided by the user maximum length of thermistor cable 250 m unscreened total thermistor resistance rk 1500 all the devices are also suitable for monitoring thermal contact sensors ptc n l emt6-db emt6-dbk manual characteristic values of sensor circuit at us and +20 °c emt6 ut1-t2 v dc max ­ 3 5.1 a1 power tripped y1 y2 21 13 us a2 t1 t2 22 14 rt1-t2 t1 t2 short-circuited 4k t1-t2 open it1-t2 ma max 1.9 0.8 ­ functions that can be disconnected on emt6-dbk function short-circuit recognition zero-voltage safety emt6-dbk zero-voltage safe operation disconnection via jumper y1 ­ y3 y1 ­ y4 ptc n l a1 power tripped y1 y2 y3 y4 21 13 us a2 t1 t2 22 14 ptc n thermal overload relays thermistor tripping units

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