The SW80 series is specially designed for DC applications, especially for switching electric motors in small vehicles on and off, such as: light industrial trucks, invalid carriages, electric pallet trucks, etc.
Extensions to the item codes can be:
B = with spark extinguishing magnets (blowout)
P = closed housing (protected)
L = large contact set (large)
po = long in (prolonged)
co = continuous operation (continuously)