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circuit breaker Compact NS400H - STR53UE - 400 A - 4 poles 4dShow more characteristics
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Main range of productCompact NS100...630 product or component typeCircuit breaker device short nameCompact NS400H circuit breaker nameCompact NS400H device applicationDistribution poles description4P protected poles description4t3t + N/23t neutral positionLeft network typeACDC network frequency50/60 Hz [In] rated current400 A at 40 °C320 A at 65 °C [Ui] rated insulation voltage750 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 60947-2750 V DC conforming to IEC 60947-2 breaking capacity codeH breaking capacity100 kA at 240 V AC 50/60 Hz conforming to NEMA AB1 HIC65 kA at 480 V AC 50/60 Hz conforming to NEMA AB1 HIC35 kA Icu at 525 V AC 50/60 Hz conforming to IEC 60947-250 kA Icu at 500 V AC 50/60 Hz conforming to IEC 60947-265 kA Icu at 440 V AC 50/60 Hz conforming to IEC 60947-270 kA Icu at 380/415 V AC 50/60 Hz conforming to IEC 60947-2100 kA Icu at 220/240 V AC 50/60 Hz conforming to IEC 60947-2 [Ics] rated service breaking capacity35 kA at 525 V AC 50/60 Hz conforming to IEC 60947-250 kA at 500 V AC 50/60 Hz conforming to IEC 60947-265 kA at 440 V AC 50/60 Hz conforming to IEC 60947-270 kA at 380/415 V AC 50/60 Hz conforming to IEC 60947-2100 kA at 220/240 V AC 50/60 Hz conforming to IEC 60947-2 suitability for isolationYes conforming to IEC 60947-2 utilisation categoryCategory A trip unit nameSTR53UE F trip unit technologyElectronic trip unit rating400 A protection typeShort time short-circuit protectionOverload protection (long time)Instantaneous short-circuit protectionProtection of the fourth pole pollution degree3 conforming to IEC 60947 Complementary control typeToggle mounting modeFixed mounting supportBackplate upside connectionFront downside connectionFront circuit breaker CT rating400 A mechanical durability15000 cycles electrical durability12000 cycles 440 V AC 50/60 Hz In/2 conforming to IEC 60947-26000 cycles 440 V AC 50/60 Hz In conforming to IEC 60947-2 connection pitch45 mm local signallingPositive contact indication neutral protection settingNo protection1 x Ir0.5 x Ir long time pick-up adjustment type IrAdjustable 48 settings long time pick-up adjustment range0.4...1 x In long time delay adjustment typeAdjustable [tr] long-time delay adjustment range12…16 s 6 x Ir138…200 s 1.5 x Ir277…400 s 1.5 x Ir3…4 s 6 x Ir34…50 s 1.5 x Ir6…8 s 6 x Ir69…100 s 1.5 x Ir8…15 s 1.5 x Ir0.2…0.74 s 7.2 x Ir0.4…0.5 s 6 x Ir1…1.4 s 7.2 x Ir1.5…2 s 6 x Ir2…2.8 s 7.2 x Ir4…5.5 s 7.2 x Ir8.2…11 s 7.2 x Ir short-time pick-up adjustment type IsdAdjustable 8 settings [Isd] short-time pick-up adjustment range1.5...10 x Ir short-time delay adjustment typeAdj 4 setgs + const I²t option [tsd] short-time delay adjustment range0.06…0.14 s0.23…0.35 s0.015…0.06 s0.14…0.23 s instantaneous pick-up adjustment type IiAdjustable instantaneous pick-up adjustment range1.5...11 x In display typeLED height255 mm width185 mm depth110 mm Environment standardsIEC 60947-2 product certificationsASEFAKEMAASTALCIE IP degree of protectionIP40 conforming to IEC 60529 IK degree of protectionIK07 conforming to EN 50102 ambient air temperature for operation-25…70 °C ambient air temperature for storage-50…85 °C Contractual warranty Warranty18 months
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