See full version: Perko Medium Duty Battery Disconnect Shut Off/On 9601DP Color: Black, Amperage: 250 amps, w/ Free Shipping
Perko's 9601 Series battery On-Off switches are among the most popular battery switches ever produced. Their traditional Perko bolt circle makes for easy installation. These switches can be mounted in numerous locations. And as ignition protected switches, they can be installed in the engine rooms of gasoline powered boats.
Features/Specifications: here
Polycarbonate body with brass terminals, Ignition protected, Easy installation, Built with quality materials
Incorporates an improved design to protect the copper contacts and brass terminals used as electrical connections. For use with systems under 50 volts. Ignition protected.
• Continuous rating: 250 amps
• Intermittent rating: 360 amps
• For 12, 24 and 32 volt systems here
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Ratings for up to 350 continuous amps and 32 volts make the Blue Sea Systems E-Series (around $44) more than adequate for most people's electrical rigs. It also comes with advanced features like AFD, which protects your alternator and engine in the event of an accidental shutoff.
Most of the items on our list are 4-position, meaning that they provide options for disconnection, running on either of 2 battery banks, or using both power-sources simultaneously. A typical usage of this kind of switch would be to select a cranking battery that's good at delivering a quick surge of power while starting your engine, but utilizing a separate deep-cycle battery when using electronic equipment like stereos or televisions with the engine off. While the option to sum both batteries' power is passed while switching, this mode is typically only used in an emergency situation wherein each separate battery doesn't have enough juice to start your engine. The best all-around 4-position switches on our list are the Blue Sea Systems E-Series, Blue Sea Systems m-Series, and Perko 8511. It's hard to go wrong with any of these options, since they all provide a switch made from quality materials and amperage and voltage ratings that will be perfectly adequate for most people's needs. If one has a system that requires a particularly large amount of power however, such as a large yacht or a huge twin-engine setup, they should take a look at the slightly more expensive Blue Sea Systems HD-Series, which offers a super robust maximum amperage rating in a similar form factor as the aforementioned models. here
The more unique options on our list are the Blue Sea Systems m-Series and the Perko 8502. The former is an interesting variant that allows the simultaneous activation of 2 totally isolated battery systems, allowing your engine to run on only your cranking battery and your appliances to run on the house battery at all times. It's similar to using a separate switch on each circuit, however its emergency "combine batteries" mode allows for both batteries to be used for all loads simultaneously, similar to the "1+2" position on a 4-way switch. It is thought that all switches can help secure your boat if they are well hidden, but the aforementioned Perko actually features a keyed lock to further deter thieves. It's one of the few locking options that features a typical lock rather than a plastic key with just one notch, and even though it wouldn't be the hardest thing in the world for a determined thief to bypass it still makes your boat a more troublesome target, which might make all the difference in a real-life situation. Both of these are great choices, but it should be noted that several variations of each are available, such as a 4-position m-Series or a non-locking Perko 8502.
The Perko Compact Battery Disconnect Switch helps manage the overall use of electrical power on board. This device allows for a quick and easy way to shut down the entire electrical system in an emergency. During inactivity, the Perko Compact Battery Disconnect Switch will help prevent battery drain. This Disconnect Switch has a bright red polycarbonate housing with a large easy-to-turn black knob. Four removable skirt panels allow for easy cable connection from different directions. High conductivity studs are long enough to handle more than 1 cable and strong enough for toque needed for secure connections.
This compact battery disconnect switch has the same traditional footprint as the Perko 9601 series. This makes installation easy. These switches can be mounted in numerous locations and are ignition protected, so they can be installed in the engine rooms of gasoline powered boats. here