BS407 is an electronic load from Aim-TTi, a manufacturer of test and measurement instruments. It is a DC electronic load with a power rating of 400 W, capable of loading currents up to 60 A in 4-quadrant operation. It features an adjustable constant current, constant power and constant resistance load modes, and can be controlled remotely by setting voltage and current limit points, as well as programs. The BS407 also has a range of protection functions to protect the device and any device connected to it, including over-voltage, over-current, over-temperature and short-circuit protection. Additionally, the BS407 offers data logging functions and the ability to save, store and recall tests, as well as trip events.