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3/10 HP N57 is the industry standard when it comes to cast iron sump pumps
Not all Models Conform Exactly to the Description Shown
The Model 460-575 is designed to protect 3-phase motors from damaging power conditions
Low Voltage Protection
This attention to detail ensures that the Model 2057 is able to withstand the most demanding applications
Littelfuse Model ALT-230-S-SW Alternating Duplex Pump Relay with Switch 95-125V 8-pin Plug-in Manufacturers__Franklin Electric__Submersible Pump Ends__Tri-Seal Pump Ends__15 GPM 3/10 HP N57 is theLittelfuse ALT 230 S SW Alternating Duplex Pump Relay With Switch Product Description Model ALT 230 S SW alternating relays are used to alternate between two loads. The ALT is commonly used in duplex pumping applications to balance the runtime of both pumps. The Model ALT S is used in single high level float applications. When the float switch opens, the alternating relay changes state forcing the other pump to run the next time the float closes
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