Cole Hersee Battery Cut Off Switch - M754

Battery Cut Off Switch; For any vehicle that needs to use two batteries where one battery is used for starting the engine, while the other is used to power auxiliary loads. This is a common situation in trucks, boats, RVs, police & rescue vehicles, & in ambulances & fire equipment.
A selector switch allows use of the first battery, the second battery, or both batteries simultaneously. This provides back-up starting power in an emergency. Either or both batteries can be selected for energizing. These switches combine the functions of Battery Selector & Master Disconnect Switches to give four battery power options:

• Power cut off at the source.
• Power On, Battery 2.
• Power On, Battery 1.
• Power On, both Batteries.

Battery selector switches provide a positive battery disconnect, which has many advantages: It gives a reliable shutdown of power during maintenance. The version with the key protects against theft of the vehicle, when unattended. It helps protect against electrical fires, when the vehicle is not in use, & minimizes battery drain. Electrical Ratings Labeled UL 707B. Rating: 500A intermittent, 310A continuous, 6-36V DC Electrical ratings on UL labels are conservative. Use with either alternators or generators. Make before break design permits operation through the three On positions with the engines running. Engines should always be shut down before turning to Off. Can be surface mounted, or installed through a 3-5/16" diameter hole in the panel. Dimensions: Flange: 6" (152.4mm) diameter, overall height 2-5/8" (66.7mm). Terminals: 3 copper studs, 3/8" (9.5mm) diameter.