The C254200D3S is a 4-pole fixed-mount switch disconnector from the Schneider ComPacT NSX DC EP range, rated 200 A at 1500 V DC. It is designed for DC isolation and switching in photovoltaic arrays and marine DC distribution — environments where high DC voltage and isolation integrity are the primary concern. Rated operational current is 200 A in both DC-22A and DC-PV2 utilization categories at 1500 V DC. The DC-22A category covers switching of resistive and mixed loads including moderate overloads; DC-PV2 specifically addresses photovoltaic-side switching where the source can deliver sustained fault current. The conventional free-air thermal current (Ith) is also 200 A at 40 °C, so the rating holds without derating under normal panel ambient. Impulse withstand is 8 kV. This means the switch can be used as a load-break isolator in a DC string combiner box or marine DC switchboard — it provides a verifiable open gap and withstands transient surges common in PV and marine systems.
Connection pitch is 35 mm. IP40 enclosure protection keeps out tools and small debris; IK07 impact resistance handles incidental contact during maintenance. Class II double-insulation construction eliminates the need for a protective earth conductor, simplifying wiring in ungrounded DC systems.
Durability and ratings
Mechanical endurance is 10,000 cycles; electrical endurance at rated load is 4,500 cycles at 1500 V DC In. The short-time withstand current (Icw) is 3.5 kA for 1 second, and the making capacity (Icm) is 3.5 kA as a standalone switch-disconnector. These numbers define the device's fault-ride-through capability — important for coordination with upstream fuses or breakers in a PV combiner. That covers most outdoor PV installations and marine engine-room ambients without active cooling.