Main product nameMicrologic product or component typeControl unit range compatibilityNSX250 circuit breaker device applicationDistribution poles description4P protected poles description3t3t + N/24t network typeAC network frequency50/60 Hz Complementary mounting modeFixed [Ue] rated operational voltage440 V AC 50/60 Hz trip unit nameMicrologic 4.2 AL trip unit technologyElectronic trip unit protection functionsLSoI local signallingAlarm residual current protection typeL : for overload protection (long time)So : for short time short-circuit protection with fixed delayI : for instantaneous short-circuit protection alarm functionEarth leakage fault trip unit rating250 A long time pick-up adjustment type IrAdjustable 9 settings long time pick-up adjustment range0.4...1 x In long time delay adjustment typeFixed [tr] long-time delay adjustment range11 s at 7.2 x Ir16 s at 6 x Ir400 s at 1.5 x Ir thermal memory20 minutes before and after tripping short-time pick-up adjustment type IsdAdjustable [Isd] short-time pick-up adjustment range1.5...10 x Ir short-time delay adjustment typeFixed [tsd] short-time delay pick-up0.02 s instantaneous pick-up adjustment type IiFixed instantaneous pick-up3000 A earth-leakage measurement typeType A earth-leakage measurement & signalIntegrated [I∆n] earth-leakage pick-up adjustment range5 A300 mA100 mA500 mA30 mA1 A3 A earth leakage specific modeOFF using the IΔn rotary switch earth-leakage time delay typeAdjustable [Δt] earth-leakage time delay pick-up adjustment range0 ms500 ms150 ms60 ms1 s Environment standardsNEMA AB1EN 60947-2IEC 60947-2UL 508 product certificationsEACCCCCB IP degree of protectionIP40 conforming to IEC 60529 pollution degree3 conforming to IEC 60947-1 ambient air temperature for operation-25…70 °C ambient air temperature for storage-50…85 °C Offer Sustainability Sustainable offer statusGreen Premium product REACh Regulation EU RoHS DirectiveCompliant
EU RoHS Declaration
Mercury freeYes RoHS exemption information China RoHS RegulationChina RoHS declaration
Product out of China RoHS scope. Substance declaration for your information
Environmental Disclosure Circularity Profile WEEEThe product must be disposed on European Union markets following specific waste collection and never end up in rubbish bins Contractual warranty Warranty18 months
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