controls are meant to apply the brakes of the towed vehicle (trailer).
There are three types of brake controls on the market today: timed,
inertia, and proportional. Another type of braking system that is used
for trailers is a breakaway kit.
Timed Controls Timed
based controls generate an output signal that increases over a period
of time. The time based controls apply braking power at the fixed rate
that is not proportional to the pressure applied to the brake pedal.
Inertia Controls Inertia
based controls work very much like Timed based control in that they
apply braking power at a preset rate during normal stopping conditions
with one very important difference. Inertia controls have a patented
"Automatic Over-Ride" system with a separate power supply for
unexpected high speed stops.
Proportional Controls Proportional
based controls offer a smooth braking response to almost any stop.
Through the use of a sensing device, the brake control can determine
the tow vehicle's rate of deceleration and then apply the trailer
brakes to match. In other words, Proportional controls deliver power to
the trailer brakes in direct relationship to the actual physical
deceleration of the tow vehicle.
Breakaway Kit A
breakaway kit is designed to apply to trailer electric brakes in the
event that the trailer becomes disconnected from the hitch while in
motion. This kit is required in many of the States and Provinces.