SCHNEIDER ELECTRIC SDSA3650 / SDSA3650 (USED) SURGE PROTECTOR, SURGELOGIC, MAINS SURGE PROTECTOR, 4 POLE, TYPE 1, 40 KA, 510 VAC, PANEL. Part Number SDSA3650. The product is used surplus. Radwell is not an authorized surplus dealer or affiliate for the Manufacturer of this product.