<b>Schneider Electric 865-4048-21 Conext SW 4kW 120/240VAC 48VDC Inverter/Charger RNW865404821.</b> Rule 21 Compliant.<p> ConextTM SW 120/240V is perfect for off-grid, backup power and self-consumption applications, it’s a pure sine wave, hybrid inverter system with switchable 50/60 Hz frequencies, providing power for every need. Conext SW features 120/240 VAC output, and capable of producing 120/240 VAC output from a 120 VAC input, without the need for an external transformer. For expanded off-grid capacity, the Conext SW is integrated with fuel-based generators as required to support loads larger than the generator’s output. It’s also self consumption ready, able to prioritize solar consumption over the grid, while maintaining zero grid export. The Conext SW works with the grid to avoid peak utility charges and support the grid when utility supply is limited. <p> <b>FAQs</b> <ul> <li><b>What is the difference between the old 865-4048 and the new 865-4048-21?</b><br> The only difference is that the new 865-4048-21 is Rule 21 compliant.</li> </ul>