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- Schneider Electric C404400D1S ComPacT NSX400NA DC PV 4P 320 A 1000 V DC Switch Disconnector Schneider Electric C404400D1S ComPacT NSX400NA DC PV 4P 320 A 1000 V DC Switch Disconnector
Schneider Electric C404400D1S ComPacT NSX400NA DC PV 4P 320 A 1000 V DC Switch Disconnector
Schneider Electric C404400D1S ComPacT NSX400NA DC PV 4P 320 A 1000 V DC Switch Disconnector
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- Description
The Schneider Electric C404400D1S is a 4-pole ComPacT NSX400NA DC PV switch-disconnector rated 320 A (DC-22A) at 1000 V DC, built for photovoltaic DC distribution. It provides manual load-break isolation with a 6 kA short-time withstand and short-circuit making capacity, sized for the DC side of a solar array combiner or inverter input.
Technical Specifications
| Reference | C404400D1S |
| Brand | Schneider Electric |
| Range | ComPacT |
| Device Short Name | NSX400NA DC PV |
| Product Type | Switch disconnector |
| Device Application | Photovoltaic |
| Poles | 4P |
| [Ith] Conventional Free Air Thermal Current | 320 A at 65 °C |
| [Ie] Rated Operational Current | 320 A DC at 1000 V DC (DC-22A) |
| [Ue] Rated Operational Voltage | 1000 V DC |
| Network Type | DC |
| Utilisation Category | DC-22A |
| Breaking Capacity Code | NA |
| [Icw] Rated Short-Time Withstand Current | 6 kA during 1 s |
| [Icm] Rated Short-Circuit Making Capacity | 6 kA (switch-disconnector alone) |
| [Ui] Rated Insulation Voltage | 1000 V DC |
| [Uimp] Rated Impulse Withstand Voltage | 8 kV |
| Suitability For Isolation | Yes (EN/IEC 60947-3) |
| Contact Position Indicator | Yes |
| Mounting Mode | Fixed |
| Connection | Front (upside and downside) |
| Dimensions (W x H x D) | 185 x 255 x 110 mm |
| Net Weight | 8.1 kg |
| IP Degree Of Protection | IP40 (IEC 60529) |
| Ambient Air Temperature For Operation | -25...70 °C |
Certifications & Standards
- EN/IEC 60947-1
- EN/IEC 60947-3
Selection Notes
The C404400D1S is a switch-disconnector, not a circuit breaker, so it provides manual isolation of a PV DC string or inverter input but no overcurrent trip of its own; upstream fuses or a DC breaker still handle fault clearing. The 6 kA Icw/Icm rating and 1000 V DC insulation level size it for utility- and commercial-scale PV combiner boxes rather than low-voltage 600 V DC residential strings, where a lower-voltage ComPacT NSX switch-disconnector would be the better fit.