500 GPH Ultima Combo Automatic Submersible Bilge Pump 12VJohnson Pump Marine Ultima Combo bilge pumps are JPM&';s proven Cartridge Bilge Pumps combined with the non-clogging electronic switch Ultima Switch(TM) for automatic operation. The electronic automatic switch Ultima Switch(TM) uses the patented Mirus field effect detector cells producing micro-electrical fields that detect disruptions caused by level of water present in the bilge and automatically activates and deactivates the pump.CE-ApprovedFeatures: Pre-configured with an electronic Ultima Switch for automatic operation Capacities 500 GPH, 750 GPH, 1000 GPH and 1250 GPH Extremely energy efficient Water-cooled motor for long service intervals Compact, all-in-one motor/impeller unit with stainless steel (SS2343) shaft No tools needed for maintenance, no need for complete disassembly. You can now leave the pump casing attached to both the boat and the hoses. 500 GPH, 750 GPH, and 1000 GPH pumps have easy-to-install Dura-Port discharge ports to eliminate stress cracking caused by over-tightened hose clamps 500 GPH, 750 GPH, and 1000 GPH pumps are delivered including both a straight and a 90Adeg smooth elbow Dura-Port as well as a removable check valve Meets the international standard, ISO 8849 marine Pump body: Thermoplastic Shaft seal: Lip seal Shaft: Stainless steel Voltage: 12v Wire size: 16GA Hose size: 3/4" Includes Dura-port connection Specifications Capacity 3ft (0.9 m) head (13.6V/27.2): 33 l/min - 525 GPH Capacity straight (13.6V/27.2V): 40 l/min - 630 GPH Amperage: 2.5 A Fuse size: 5 A Connection: 3/4" Length: 4.41" (112 mm) Width: 4.25" (108 mm) Height: 3.35" (85 mm) Weight: 14.4 oz. Specifications: Gallons Per Hour: 500 GPH Operation: Automatic Outlet Size: 3/4" Volts: 12v Type: Electric Box Dimensions: 4"H x 7"W x 7"L WT: 1 lbs UPC: 729321075039 Owner&';s Manual (pdf).embed-container { position: relative; padding-bottom: 56.25%; height: 0; overflow: hidden; max-width: 100%; } .embed-container iframe, .embed-container object, .embed-container embed { position: absolute; top: 0; left: 0; width: 100%; height: 100%; }