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Schneider Electric LV432749

Schneider LV432749 ComPact NSX400N MCCB, 3-pole, 320 A, 85 kA

MPNLV432749
Obsolete

Schneider Electric ComPact NSX400N LV432749 molded case circuit breaker, 3-pole, 320 A, 85 kA Icu at 415 V AC, MicroLogic 1.3 M electronic trip unit, 690 V AC, fixed mount, toggle control, EN/IEC 60947.

$766.73 – $1,296.83Ref. price · indicative, final on quote
Schneider Electric LV432749 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

LV432749 key specifications
ParameterValue
Control typeToggle
Network typeAC
Protection typeI : for short-circuit protection (magnetic)
Range of productComPact NSX400...630
Product or component typeCircuit breaker
Short-time protection delay adjustment type tsdFixed
Short-time protection pick-up adjustment type isdAdjustable 9 settings
Instantaneous protection pick-up adjustment type iiFixed
Voltage800 V AC 50/60 Hz
[Ue] rated operational voltage690 V AC 50/60 Hz
[Uimp] rated impulse withstand voltage8 kV
Current320 A at 65 °C

All specifications

LV432749 additional specifications
ParameterValue
[Ics] rated service short-circuit breaking capacity11 kA at 525 V AC 50/60 Hz conforming to IEC 60947-2 85 kA at 220/240 V AC 50/60 Hz conforming to IEC 60947-2 10 kA at 660/690 V AC 50/60 Hz conforming to IEC 60947-2 50 kA at 380/415 V AC 50/60 Hz conforming to IEC 60947-2 30 kA at 500 V AC 50/60 Hz conforming to IEC 60947-2 42 kA at 440 V AC 50/60 Hz conforming to IEC 60947-2
[Icu] rated ultimate short-circuit breaking capacity85 kA at 240 V AC 50/60 Hz conforming to UL 508 22 kA Icu at 525 V AC 50/60 Hz conforming to IEC 60947-2 85 kA Icu at 220/240 V AC 50/60 Hz conforming to IEC 60947-2 10 kA Icu at 660/690 V AC 50/60 Hz conforming to IEC 60947-2 30 kA Icu at 500 V AC 50/60 Hz conforming to IEC 60947-2 20 kA at 600 V AC 50/60 Hz conforming to UL 508 50 kA at 480 V AC 50/60 Hz conforming to UL 508 50 kA Icu at 380/415 V AC 50/60 Hz conforming to IEC 60947-2 42 kA Icu at 440 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 pitch45 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
Depth110 mm
Width140 mm
Height255 mm
Product weight6.05 kg
Electrical durability3000 cycles at 690 V In 6000 cycles at 690 V In/2 6000 cycles at 440 V In 12000 cycles at 440 V In/2
Mechanical durability15000 cycles
StandardsEN/IEC 60947
RangeComPact
Trip unit nameMicroLogic 1.3 M
Local signallingFlashing LED (green) for ready to operate
Trip unit rating320 A at 65 °C
Device short nameNSX400N
Safety categoryN 50 kA 415 V AC
Device applicationMotor
Overvoltage categoryClass II
Trip unit technologyElectronic
Earth-leakage protectionWithout
Suitability for isolationYes conforming to EN/IEC 60947-2
Trip unit protection functionsI
Zone selective interlocking ZSIWithout
Ambient air temperature for storage-50...85 °C
Ambient air temperature for operation-25...70 °C
Number of slots for electrical auxiliaries6 slot(s)
[Isd] short-time protection pick-up adjustment range3840 A 3200 A 2880 A 2560 A 1600 A 4160 A 3520 A 1920 A 2440 A
[Ii] instantaneous protection pick-up adjustment range4800 A

Product details

Overview

The LV432749 is a Schneider ComPact NSX400N molded case circuit breaker rated 320 A continuous with an 85 kA interrupting capacity at 415 V AC, built on a 3-pole frame for 690 V AC line-to-line service. It carries a MicroLogic 1.3 M electronic trip unit providing magnetic-only short-circuit protection, suited for motor branch circuits where thermal overload is handled upstream.

Compared to the 1-pole LV438690 (160 A, 250 V), the LV432749 triples the pole count and doubles the current rating to 320 A at 690 V, making it the correct choice for three-phase motor feeders rather than single-phase lighting or control panels.

The LV432749 remains in active production as a current ComPact NSX catalogue item; standard lead times apply through distribution, and an RFQ confirms availability for the exact build.

MPN
LV432749