Victron Energy Orion 24/12-70A DC-DC converter

Remote on/off connector

The remote on/off eliminates the need for a high current switch in the input wiring. The remote on/off can be operated with a low power switch or by the engine run/stop switch (see manual). 

All models with adjustable output can also be used as a battery charger
For example to charge a 12V starter or accessory battery in an otherwise 24V system. 

All models with adjustable output can be paralleled to increase output current
Up to five units can be connected in parallel.