Main range of productMasterpact NW product or component typeBasic frame device short nameMasterpact NW20 circuit breaker nameMasterpact NW20 poles description4P neutral positionLeft network typeAC breaking capacity codeH2A suitability for isolationYes conforming to IEC 60947-2 utilisation categoryCategory B Complementary network frequency50/60 Hz control typePush-button mounting modeDrawout [In] rated current2000 A ( 40 °C ) [Ui] rated insulation voltage1000 V AC 50/60 Hz conforming to IEC 60947-2 [Uimp] rated impulse withstand voltage12 kV conforming to IEC 60947-2 [Icm] rated short-circuit making capacity187 kA 525 V AC 50/60 Hz187 kA 690 V AC 50/60 Hz [Ue] rated operational voltage690 V AC 50/60 Hz conforming to IEC 60947-2 circuit breaker CT rating2000 A breaking capacity85 kA Icu at 220...240 V AC 50/60 Hz conforming to IEC 60947-285 kA Icu at 380...415 V AC 50/60 Hz conforming to IEC 60947-2 [Ics] rated service breaking capacityIcs 85 kA 220/415 V AC 50/60 Hz conforming to IEC 60947-2 protection typeWithout protection mechanical durability10000 cycles without maintenance conforming to IEC 60947-220000 cycles with maintenance conforming to IEC 60947-2 electrical durability6000 cycles 690 V AC 50/60 Hz without maintenance conforming to IEC 60947-28000 cycles 440 V AC 50/60 Hz without maintenance conforming to IEC 60947-2 connection pitch115 mm [Icw] rated short-time withstand current75 kA ( 3 s ) conforming to IEC 60947-285 kA ( 1 s ) conforming to IEC 60947-2 integral instant protection171...209 kA maximum breaking time25 ms closing response time< 70 ms height352 mm width537 mm depth297 mm Environment standardsIEC 60947-2 product certificationsASEFAASTA pollution degree4 conforming to IEC 60664-1 ambient air temperature for operation-25...70 °C ambient air temperature for storage-40...85 °C Contractual warranty Warranty period18 months
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