Page 105 of Circuit Breakers / Switches by Moeller Electric USA

104 technical data circuit-breakers moeller sk1230-1157en-na rated uninterrupted current 160 a nzmb1 nzmn1 circuit-breakers disconnect switches up to 1200 a circuit-breakers rated impulse withstand voltage uimp main contacts auxiliary contacts rated operational voltage overvoltage category/pollution degree rated insulation voltage for use in it electrical power networks switching capacity rated short-circuit making capacity 240 v 50/60 hz 400/415 v 50/60 hz 440 v 50/60 hz 525 v 50/60 hz 690 v 50/60 hz ue ui v v v ac v v 6000 6000 690 iii/3 690 525 6000 6000 690 iii/3 690 690 icm icm icm icm icm ka ka ka ka ka 63 53 53 30 ­ 30 25 25 15 ­ 30 25 25 7.5 ­ a ­ ­ 187 105 74 40 17 85 50 35 20 10 85 50 35 10 7.5 a ­ ­ rated short-circuit breaking capacity icn icu to iec/en 60947 operating sequence 240 v 50/60 hz icu ka o-t-co ka 400/415 v 50/60 hz icu ka 440 v 50/60 hz icu ka 525 v 50/60 hz icu 690 v 50/60 hz icu ka ics ka icu to iec/en 60947 operating sequence 240 v 50/60 hz o-t-co-t-co 400/415 v 50/60 hz ics ka ka 440 v 50/60 hz ics ka 525 v 50/60 hz ics ka 690 v 50/60 hz ics utilization category to iec/en 60947-2 rated short-time withstand current t 0.3 s icw ka ka t=1s icw rated making and breaking capacity rated operational current ac-1 400/415 v 50/60 hz ie a a 690 v 50/60 hz ie a ac-3 400/415 v 50/60 hz ie 690 v 50/60 hz ie a lifespan mechanical operations of which max 50 trip by shunt/undervoltage release maximum operating frequency ops/h lifespan electrical to iec/en 60947-4-1 section b ac-1 400/415 v 50/60 hz operations 690 v 50/60 hz operations ac-3 400/415 v 50/60 hz operations 690 v 50/60 hz operations w current heat loss per pole at i u overload releases temperature compensation for nzm2 to iec/en 60947 residual error in the range -25 °c 70 °c reference temperature 40 °c thermomagnetic k electronic total opening delay at short-circuit ms technical data divergent from the products for the iec market switching capacity na switches ul489 csa 22.2 no 5.1 240 v 60 hz 480v 60hz 600 v 60 hz notes 1 for 2 for 160 160 160 160 20000 120 10000 7500 7500 5000 13 160 160 160 160 20000 120 10000 7500 7500 5000 13 0.7 ­ 10 0.7 ­ 10 ka ka ka 35 252 ­ 85 352 ­ switching capacity of na switches with nzm 1 na the following applies 480y/277 v from 60 a rated operational current ac-3 at nzm4 the following applies 400 v max 650 kw 600 v max 600 kw 3 for switching capacity of na switches with nzmh2 and nzmh3 the following applies current limiting switch to ul489 4 for switching capacity of na switches with nzmh4 at 240 v 60 hz the following applies please enquire

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