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Schneider Electric LV433960

Schneider LV433960 MicroLogic 4.3 AL trip unit, 400 A, 3-pole, discontinued

MPNLV433960
Obsolete

Schneider LV433960 Compact Nsx — now discontinued, supplied from remaining surplus and broker stock.

$1,506.05Ref. price · indicative, final on quote
Schneider Electric LV433960 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

LV433960 key specifications
ParameterValue
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 NSX400...630
Product or component typeTrip unit
Long-time protection delay adjustment type trFixed
Short-time protection delay adjustment type tsdFixed
Short-time protection pick-up adjustment type isdAdjustable
Instantaneous protection pick-up adjustment type iiFixed
Earth-leakage protection sensitity adjustment type iδnAdjustable
Earth-leakage protection time delay adjustement type δtAdjustable
Long-time pick-up adjustment type ir (thermal protection)Adjustable 9 settings
[Ue] rated operational voltage440 V AC 50/60 Hz

All specifications

LV433960 additional specifications
ParameterValue
Trip unit rated current400 A at 40 °C
Network frequency50/60 Hz
Poles3P
Protected poles description3t
IP degree of protectionIP40 conforming to IEC 60529
Pollution degree3 conforming to IEC 60947-1
Electrical shock protection classClass II
StandardsEN 60947-2 IEC 60947-2 UL 508 NEMA AB1
RangeComPact
Thermal memory20 minutes before and after tripping
Trip unit nameMicroLogic 4.3 AL
Local signallingFlashing LED (green) for ready to operate LED 105 % Ir (red) for overload LED 90 % Ir (orange) for overload Color indicator (yellow) for residual current
Neutral positionLeft
Device applicationDistribution
Trip unit technologyElectronic
Earth-leakage protectionIntegrated
Earth-leakage protection classClass A
Trip unit protection functionsLSoI
Zone selective interlocking ZSIWithout
Ambient air temperature for storage-40...85 °C
Ambient air temperature for operation-25...70 °C
Earth-leakage protection specific modeOFF using the IΔn rotary switch
[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 range160...400 A
[tsd] short-time protection delay adjustment range0.02 s
[Isd] short-time protection pick-up adjustment range1.5...10 x Ir
[Ii] instantaneous protection pick-up adjustment range4800 A
[δt] earth-leakage protection time delay adjustment range150 ms 1 s 0 ms 500 ms 60 ms
[IΔn] earth-leakage protection sensitivity adjustment range300 mA 3 A 500 mA 1 A 5 A 10 A

Product details

Overview

The LV433960 is a MicroLogic 4.3 AL electronic trip unit for the Schneider ComPact NSX400 and NSX630 molded-case circuit breakers, rated 400 A with 3 poles and LSoI protection (long-time, short-time with fixed delay, instantaneous). It carries integrated earth-leakage protection, adjustable short-time pickup (Isd), and a fixed long-time delay curve with a 20-minute thermal memory before and after tripping.

Schneider discontinued the LV433960 on 2023-05-02; it is no longer in active production. Remaining units are available through surplus and broker channels only. For a line-down or last-time-buy requirement, an RFQ confirms actual quantity and lead time from our multi-source network.

Compared to the LV433808, which is a 4-pole 250 A MicroLogic 4.3 AL trip unit, the LV433960 carries 3 poles and a 400 A rating. The LV433808 suits a 4-wire distribution panel at lower current; the LV433960 fits a 3-pole 400 A bus.

MPN
LV433960