Page 5 of Circuit Breakers / Switches by Moeller Electric USA

4 overview circuit-breakers disconnect switches for north america 3 pole moeller sk1230-1157en-na circuit-breakers disconnect switches up to 1200 a circuit-breakers ul/csa approved to ul 489 csa 22.2 no 5.1 and to iec/en 60947 with main switch characteristics to iec/en 60204 and isolating characteristics to iec/en 60947 vde 0660 rated uninterrupted current iu rated current in adjustable overload releases ir adjustable short-circuit releases ii delayed short-circuit releases isd thermomagnetic releases overload releases fixed iu a nzm1 15 ­ 125 basic switching capacity1 nema test procedure nzmb1 na 35 252 ­ 25 0.25 25 0.25 15 0.30 nzmn1 na 85 352 ­ 50 0.25 35 0.25 20 0.30 10 0.50 adjustable iu a nzm1 20 ­ 125 ir a nzm2 20 ­ 250 1 x in without iu a nzm1 1.2 ­ 100 nzm2 15 ­ 250 nzm2 1.6 ­ 250 iec/en 60947 240 v 60 hz 480 v 60 hz 600 v 60 hz 400/415 v 440 v 525 v sym rms ka sym rms ka sym rms ka ka/cos v ka/cos v ka/cos v sym rms ka sym rms ka sym rms ka ka/cos v ka/cos v ka/cos v ka/cos v sym rms ka sym rms ka sym rms ka ka/cos v ka/cos v ka/cos v ka/cos v nzmb2 na 35 25 18 25 0.25 25 0.25 15 0.30 nzmn2 na 85 35 25 50 0.25 35 0.25 25 0.25 20 0.30 nzmh2 na 150 100 50 150 0.20 130 0.20 50 0.25 20 0.30 normal switching capacity1 nema test procedure 240 v 60 hz 480 v 60 hz 600 v 60 hz iec/en 60947 400/415 v 440 v 525 v 690 v high switching capacity1 nema test procedure 240 v 60 hz 480 v 60 hz 600 v 60 hz 400/415 v 440 v 525 v 690 v iec/en 60947 notes 1 breakers conform to ul/csa as well as the iec regulations iec switching performance values are contained on the rating plate a technical data 2 for nzm 1 na 50 a 480y/277v disconnect switches ul/csa approved to ul 489 csa 22.2 no 5.1 and to iec/en 60947 with main switch characteristics to iec/en 60204 and vde 0113 isolating characteristics to iec/en 60947-3 and vde 0660 without overload and short-circuit releases rated uninterrupted current iu in 400 550 600 800 1000 1200 n4 na 53 25 rated short-circuit making capacity icm rated short-time withstand current icw 1s currentrms ka ka n3 na 25 12

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