Schneider Electric LV433800 trip unit MicroLogic 4.2 for ComPact NSX 100/160/250 circuit breakers, electronic, rating 40A, 3 poles 3d



The Schneider Electric LV433800 trip unit MicroLogic 4.2 is designed for use with ComPact NSX 100/160/250 distribution boards. This unit features a thermal circuit breaker with Type C tripping characteristics, suitable for interior use. It has 3 throws, 3 outlets, and thermal overload protection. With a maximum amperage of 400A and operating temperature of 70°C, this unit is compatible with wire gauge ranging from 21-25 AWG. The sleek black unit is suitable for industrial application and can be controlled via a switch. Its IP rating of IP40 ensures reliable performance in various electrical systems.

Main
RangeComPact
Range of productComPact NSX100...250
Product or component typeTrip unit
Trip unit nameMicroLogic 4.2
Trip unit technologyElectronic
Range compatibilityComPact NSX100
ComPact NSX160
ComPact NSX250
Device applicationDistribution
Number of poles3P
Protected poles description3t
Neutral positionLeft
Trip unit protection functionsLSoIR
Protection typeL : for overload protection (long time)
So : for short time short-circuit protection with fixed delay
I : for instantaneous short-circuit protection
R : for earth-leakage protection
Trip unit rated current40 A at 40 °C
[Ue] rated operational voltage440 V AC 50/60 Hz
Network typeAC
Network frequency50/60 Hz
Complementary
Long-time pick-up adjustment type Ir (thermal protection)Adjustable 9 settings
[Ir] long-time protection pick-up adjustment range18...40 A
Long-time protection delay adjustment type trFixed
[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
Thermal memory20 minutes before and after tripping
Short-time protection pick-up adjustment type IsdAdjustable
[Isd] Short-time protection pick-up adjustment range1.5...10 x Ir
Short-time protection delay adjustment type tsdFixed
[tsd] Short-time protection delay adjustment range0.02 s
Instantaneous protection pick-up adjustment type IiFixed
[Ii] instantaneous protection pick-up adjustment range600 A
Earth-leakage protectionIntegrated
Earth-leakage protection classClass A
Earth-leakage protection sensitity adjustment type IΔnAdjustable
[IΔn] earth-leakage protection sensitivity adjustment range1 A
100 mA
300 mA
30 mA
5 A
500 mA
3 A
Earth-leakage protection specific modeOFF using the IΔn rotary switch
Earth-leakage protection time delay adjustement type ΔtAdjustable
[Δt] Earth-leakage protection time delay adjustment range0 ms
500 ms
60 ms
1 s
150 ms
Zone selective interlocking ZSIWithout
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