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M-750 Series Battery Selector Master Disconnect Switch
Brand: Littelfuse, Inc.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 and rescue vehicles, and in ambulances or 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.
Features
These switches combine the functions of Battery Selector and 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, and minimizes battery drain
Specifications
- Rating: 500A intermittent, 310A continuous, 6-36V DC Electrical ratings on UL labels are conservative. Electrical Ratings Labeled UL 707B
- 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.
- Heavy-Duty Construction Vaporproof, weather-, dust- and corrosion-resistant.
- Durable, fracture-resistant high temperature plastic case, knob and insulator.
- Switches conform to USCG section 183.410 for ignition protection.
- Heavy duty copper stud terminals, with brass hexnuts.
- 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.
