48 Volt 2000 Watt DC Double Water Heating Element simply utilize the N/C contacts

simply utilize the N/C contacts of the relays as well

Pipe Diameter is 8

pre-wired solution for your battery based system

Continuous output power: 400 Watts

48 Volt 2000 Watt DC Double Water Heating Element simply utilize the N/C contacts9 3 8 Inch Dual Power Submersible Water Heating Element Can be used directly with batteries, solar panels, hydroelectric generators, as a wind turbine dump diversion load. Double elements provide even more surface area, allowing for faster heating than single element designs. DO NOT USE GRID POWER AS IT WILL IMMEDIATELY DESTROY THE ELEMENT! These water heating elements are not compatible with lithium batteries. Can also be used as a solar panel dump