Features include: heavy-duty copper sweep contacts, positive click-stop on all positions and built-in skirt to protect connections. Works on all 6-, 12-, 24- and 36-volt systems. Rated at 250 amps continuous, 360 amps momentary.
Dimensions: 5-1/4" diameter.
Works great, I can cut power off completely and run both batteries or keep on in reserve. Bought this one to replace one that I have been using for many years.