Schneider LV433931 Compact Nsx — now discontinued, supplied from remaining surplus and broker stock.
| Parameter | Value |
|---|---|
| Network type | AC |
| Protection type | L : 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 |
| Range of product | ComPact NSX400...630 |
| Product or component type | Trip unit |
| Long-time protection delay adjustment type tr | Fixed |
| Short-time protection delay adjustment type tsd | Fixed |
| Short-time protection pick-up adjustment type isd | Adjustable |
| Instantaneous protection pick-up adjustment type ii | Fixed |
| Earth-leakage protection sensitity adjustment type iδn | Adjustable |
| Earth-leakage protection time delay adjustement type δt | Adjustable |
| Long-time pick-up adjustment type ir (thermal protection) | Adjustable 9 settings |
| [Ue] rated operational voltage | 440 V AC 50/60 Hz |
| Parameter | Value |
|---|---|
| Trip unit rated current | 570 A at 40 °C |
| Network frequency | 50/60 Hz |
| Poles | 3P |
| Protected poles description | 3t |
| IP degree of protection | IP40 conforming to IEC 60529 |
| Pollution degree | 3 conforming to IEC 60947-1 |
| Electrical shock protection class | Class II |
| Standards | EN 60947-2 NEMA AB1 IEC 60947-2 UL 508 |
| Range | ComPact |
| Thermal memory | 20 minutes before and after tripping |
| Trip unit name | MicroLogic 4.3 |
| Local signalling | Flashing 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 position | Left |
| Device application | Distribution |
| Trip unit technology | Electronic |
| Earth-leakage protection | Integrated |
| Earth-leakage protection class | Class A |
| Trip unit protection functions | LSoIR |
| Zone selective interlocking ZSI | Without |
| Ambient air temperature for storage | -40...85 °C |
| Ambient air temperature for operation | -25...70 °C |
| Earth-leakage protection specific mode | OFF using the IΔn rotary switch |
| [Tr] Long-Time protection delay adjustment range | 11 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 range | 250...570 A |
| [tsd] short-time protection delay adjustment range | 0.02 s |
| [Isd] short-time protection pick-up adjustment range | 1.5...10 x Ir |
| [Ii] instantaneous protection pick-up adjustment range | 6900 A |
| [δt] earth-leakage protection time delay adjustment range | 60 ms 0 ms 150 ms 500 ms 1 s |
| [IΔn] earth-leakage protection sensitivity adjustment range | 10 A 300 mA 5 A 1 A 3 A 500 mA |
The LV433931 is a MicroLogic 4.3 electronic trip unit for the Schneider ComPact NSX630 molded-case circuit breaker, rated 570 A on a 3-pole frame with LSoIR protection (long-time, short-time, instantaneous, earth-leakage). It operates on a 440 V AC, 60 Hz network and carries CCC, EAC, and CB certifications. The Ir pickup adjusts from 250 to 570 A; the Tsd delay is fixed at 0.02 s.
Schneider discontinued the LV433931 on 2023-03-09. An RFQ confirms available quantity and lead time.
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