These are popular battery disconnect switches. Just search for the popular BATTERY DISCONNECT SWICTH on GOOGLE and when it loads up select "IMAGES" and you will then view many choices all in one location. Just click on the one you like to get the source information.
I have heard this style switch contacts is prone to arcing over when switch is used under load. The ones i have seen have the neat feature of removing the RED KNOB to keep someone from using it. Of course in my case I would be the one to lose the red knob hehe...
I have multiple batteries in my battery bank and I use the BLUE SEA style four position Battery Disconnect switch for each two battery groups. If i switch them all to OFF then it disconnects all of my batteries. This is probably an over-kill if you just have one battery