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Schneider Electric LV431977

Schneider Electric LV431977

MPNLV431977
Obsolete

Circuit breaker, VigiComPact NSX250B, 25kA/415VAC, MicroLogic 2.2 trip unit 100A, add-on Vigi MH module, 3P 3d

Schneider Electric LV431977 datasheet (PDF)
Source DocumentedChannel stated on listing & quote
Condition PhotosReal unit photos / video on request
WhatsApp AnswersFast human replies for machine-down parts
Worldwide DispatchDHL/FedEx — transit quoted per order
Independent China distributor & sourcing agent· Listing updated Sep 2026

Specifications

LV431977 key specifications
ParameterValue
Control typeToggle
Network typeAC
Protection typeL : for overload protection (long time) So : for short time short-circuit protection with fixed delay I : for instantaneous short-circuit protection
Range of productComPact NSX100...250
Product or component typeCircuit breaker with Vigi add-on
Long-time protection delay adjustment type trFixed
Short-time protection delay adjustment type tsdFixed
Short-time protection pick-up adjustment type isdAdjustable 9 settings
Instantaneous protection pick-up adjustment type iiFixed
Earth-leakage protection sensitity adjustment type iδnAdjustable 5 settings
Earth-leakage protection time delay adjustement type δtAdjustable 4 settings
Long-time pick-up adjustment type ir (thermal protection)Adjustable 9 settings

All specifications

LV431977 additional specifications
ParameterValue
Voltage800 V AC 50/60 Hz
[Ue] rated operational voltage440 V AC 50/60 Hz
[Uimp] rated impulse withstand voltage8 kV
Current100 A at 40 °C
[Ics] rated service short-circuit breaking capacity20 kA at 440 V AC 50/60 Hz conforming to IEC 60947-2 25 kA at 380/415 V AC 50/60 Hz conforming to IEC 60947-2 40 kA at 220/240 V AC 50/60 Hz conforming to IEC 60947-2 15 kA at 500 V AC 50/60 Hz conforming to IEC 60947-2
[Icu] rated ultimate short-circuit breaking capacity15 kA Icu at 500 V AC 50/60 Hz conforming to IEC 60947-2 20 kA Icu at 440 V AC 50/60 Hz conforming to IEC 60947-2 25 kA Icu at 380/415 V AC 50/60 Hz conforming to IEC 60947-2 40 kA Icu at 220/240 V AC 50/60 Hz conforming to IEC 60947-2
Network frequency50/60 Hz
Poles3P
Protected poles description3t
Utilisation categoryCategory A
IK degree of protectionIK07 conforming to IEC 62262
IP degree of protectionIP40 conforming to IEC 60529
Mounting supportBackplate
Circuit breaker mounting modeFixed
Connection pitch35 mm
Upside connectionFront
Downside connectionFront
Pollution degree3 conforming to IEC 60664-1
Relative humidity0...95 %
Operating altitude0...2000 m without derating 2000 m...5000 m with derating
Electrical shock protection classClass II
Depth86 mm
Width105 mm
Height236 mm
Product weight2.4 kg
Electrical durability5000 cycles at 690 V In 10000 cycles at 690 V In/2 10000 cycles at 440 V In 20000 cycles at 440 V In/2
Mechanical durability20000 cycles
StandardsEN/IEC 60947
RangeComPact
Thermal memory20 minutes before and after tripping
Trip unit nameMicroLogic 2.2
Local signallingFlashing LED (green) for ready to operate LED 105 % Ir (red) for overload LED 90 % Ir (orange) for overload
Trip unit rating100 A at 40 °C
Device short nameVigiCompact NSX250B
Safety categoryB 25 kA 415 V AC
Device applicationDistribution
Overvoltage categoryClass II
Trip unit technologyElectronic
Earth-leakage protectionWith
Suitability for isolationYes conforming to EN/IEC 60947-2
Earth-leakage protection classClass A
Trip unit protection functionsLSoI
Zone selective interlocking ZSIWithout
Earth-leakage add-on module nameMH
Ambient air temperature for storage-50...85 °C
Ambient air temperature for operation-25...70 °C
Number of slots for electrical auxiliaries6 slot(s)
[Tr] Long-Time protection delay adjustment range11 s at 7.2 x Ir 16 s at 6 x Ir 400 s at 1.5 x Ir
[Ir] long-time protection pick-up adjustment range40...100 A
[Isd] short-time protection pick-up adjustment range1.5...10 x Ir
[Ii] instantaneous protection pick-up adjustment range1500 A
[IΔn] earth-leakage protection sensitivity adjustment range0.03...10 A
MPN
LV431977