400A DC Reversing Contactor, 2 pole, 12V/24V/48V | ATO.com
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ATO 500A DC Contactor, Single Pole, 12V/24V/48V,for Battery, Rectification Power Supply, Pump Motor and Electronic Vehicles. (12V): Amazon.com: Tools & Home Improvement
200A DC Reversing Contactor, 12V/24V/48V, Continuous