Main rangeCompact range of productNS630b...1600 product or component typeCircuit breaker device short nameCompact NS1250N device applicationDistribution poles description3P protected poles description3t network typeAC breaking capacity codeN suitability for isolationYes conforming to IEC 60947-2 utilisation categoryCategory B trip unit nameMicrologic 5.0 E trip unit technologyElectronic trip unit rating1250 A ( 50 °C ) Complementary network frequency50/60 Hz control typeRotary handleToggle mounting modeFixed mounting supportBackplate upside connectionFront downside connectionFront (In) rated current up to 65 °C1250 A ( 50 °C ) [Ui] rated insulation voltage800 V AC 50/60 Hz conforming to IEC 60947-2 [Uimp] rated impulse withstand voltage8 kV conforming to IEC 60947-2 [Ue] rated operational voltage690 V AC 50/60 Hz conforming to IEC 60947-2 circuit breaker CT rating1250 A breaking capacity50 kA Icu at 440 V AC 50/60 Hz conforming to IEC 60947-285 kA Icu at 220/240 V AC 50/60 Hz conforming to IEC 60947-250 kA Icu at 380/415 V AC 50/60 Hz conforming to IEC 60947-230 kA Icu at 660/690 V AC 50/60 Hz conforming to IEC 60947-240 kA Icu at 500/525 V AC 50/60 Hz conforming to IEC 60947-2 [Ics] rated service breaking capacityIcs 30 kA 660/690 V AC 50/60 Hz conforming to IEC 60947-2Ics 40 kA 500/525 V AC 50/60 Hz conforming to IEC 60947-2Ics 50 kA 220/240 V AC 50/60 Hz conforming to IEC 60947-2Ics 50 kA 380/415 V AC 50/60 Hz conforming to IEC 60947-2Ics 50 kA 440 V AC 50/60 Hz conforming to IEC 60947-2 auxiliary contact composition1 NO/NC mechanical durability10000 cycles electrical durability2000 cycles IEC 60947-2 690 V In AC 50/60 Hz3000 cycles IEC 60947-2 690 V In/2 AC 50/60 Hz4000 cycles IEC 60947-2 440 V In AC 50/60 Hz5000 cycles IEC 60947-2 440 V In/2 AC 50/60 Hz local signallingPositive contact indication [Icw] rated short-time withstand current19.2 kA trip unit protection functionsLSI protection typeInstantaneous short-circuit protectionOverload protection (long time)Short time short-circuit protection long time pick-up adjustment type IrAdjustable long time pick-up adjustment range0.4...1 x In long time delay adjustment typeAdjustable 9 settings [tr] long-time delay adjustment range0.5...24 s 6 x Ir0.7...16.6 s 7.2 x Ir12.5...600 s 1.5 x Ir thermal memory20 mn short-time pick-up adjustment type IsdAdjustable 9 settings [Isd] short-time pick-up adjustment range1.5...10 x Ir short-time delay adjustment typeAdjustable [tsd] short-time delay adjustment range0.02...0.5 s [tsd] short-time delay adjustment range0.1...0.4 s I²t=on0...0.4 s I²t=off instantaneous pick-up adjustment type IiAdjustable instantaneous pick-up adjustment range2...15 x InOff integrated instantaneous protection40 kA zone selective interlocking ZSIWith display typeLCD display type of measurementEnergy meter height327 mm width210 mm depth147 mm Environment standardsIEC 60947-2 product certificationsASEFAASTA power losses44 W IP degree of protectionIP40 conforming to IEC 60529 IK degree of protectionIK07 conforming to EN 50102 pollution degree3 conforming to IEC 60947 ambient air temperature for operation-25...70 °C ambient air temperature for storage-50...85 °C Offer Sustainability Sustainable offer statusGreen Premium product RoHS (date code: YYWW) REACh Product environmental profileAvailable Product end of life instructionsNeed no specific recycling operations Contractual warranty Warranty period18 months
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