circuit breaker Masterpact NW12N1 – 1250 A – 3 poles – drawout – w/o trip unit   ۴۸۲۵۸   کلید هوایی ۱۲۵۰ آمپر سه پل کشویی  سری NW قدرت قطع 65KA NW12H13P2AD Main range of product Masterpact NW product or component type Basic frame device short name Masterpact NW12 circuit breaker name Masterpact NW12N1 poles description 3P network type AC breaking capacity code N1 suitability for isolation Yes conforming to IEC 60947-2 utilisation category Category B Complementary network frequency ۵۰/۶۰ Hz control type Push-button mounting mode Drawout [In] rated current ۱۲۵۰ A at 40 °C [Ui] rated insulation voltage ۱۰۰۰ V AC 50/60 Hz conforming to IEC 60947-2 [Uimp] rated impulse withstand voltage ۱۲ kV conforming to IEC 60947-2 [Icm] rated short-circuit making capacity ۱۸۷ kA 525 V AC at 50/60 Hz 187 kA 690 V AC at 50/60 Hz [Ue] rated operational voltage ۶۹۰ V AC 50/60 Hz conforming to IEC 60947-2 circuit breaker CT rating ۱۲۵۰ A breaking capacity ۴۲ kA Icu at 440 V AC 50/60 Hz conforming to IEC 60947-2 42 kA Icu at 525 V AC 50/60 Hz conforming to IEC 60947-2 42 kA Icu at 690 V AC 50/60 Hz conforming to IEC 60947-2 42 kA Icu at 220…240 V AC 50/60 Hz conforming to IEC 60947-2 42 kA Icu at 380…415 V AC 50/60 Hz conforming to IEC 60947-2 [Ics] rated service breaking capacity ۴۲ kA at 525 V AC 50/60 Hz conforming to IEC 60947-2 42 kA at 690 V AC 50/60 Hz conforming to IEC 60947-2 protection type Without protection mechanical durability ۱۲۵۰۰ cycles without maintenance conforming to IEC 60947-2 25000 cycles with maintenance conforming to IEC 60947-2 electrical durability ۱۰۰۰۰ cycles 440 V AC 50/60 Hz without maintenance conforming to IEC 60947-2 10000 cycles 690 V AC 50/60 Hz without maintenance conforming to IEC 60947-2 connection pitch ۱۱۵ mm [Icw] rated short-time withstand current ۲۲ kA 3 s conforming to IEC 60947-2 42 kA 1 s conforming to IEC 60947-2 maximum breaking time ۲۵ ms maximum closing response time ۷۰ ms height ۴۳۹ mm width ۴۴۱ mm depth ۳۹۴.۵ mm Environment standards IEC 60947-2 product certifications ASEFA ASTA pollution degree ۴ conforming to IEC 60664-1 ambient air temperature for operation -۲۵…۷۰ °C ambient air temperature for storage -۴۰…۸۵ °C