Perko Compact Medium Duty Battery Selector Switch w/Key Lock

The Perko Compact Medium Duty Battery Selector Switch w/Key Lock is an essential electrical management component designed for marine vessels, RVs, off-grid power systems, and dual-battery automotive setups. This switch allows operators to select between multiple battery banks, isolate power sources, or combine batteries for increased amperage capacity when needed. Whether you're managing independent engine and house batteries on a boat, coordinating auxiliary power on an expedition vehicle, or controlling battery bank distribution in a recreational vehicle, this selector switch provides reliable power routing with integrated key lock security to prevent unauthorized or accidental misuse.

Built by Perko, a manufacturer renowned for marine-grade electrical products, this medium-duty battery selector features a secure key-lock mechanism that restricts switch operation to authorized personnel only. The compact design measures 5 x 3 x 8 inches and weighs just 1 pound, making it suitable for tight installation spaces without compromising functionality. The switch handles multiple battery configurations safely, preventing cross-contamination between battery banks and reducing the risk of voltage spikes or dead batteries caused by improper switching. Its robust construction is engineered to withstand marine environments, high vibration, and demanding electrical loads typical of commercial and recreational applications.

This battery selector switch is ideal for boat owners, RV enthusiasts, and fleet operators who depend on multiple battery sources or require controlled power distribution. Installation typically involves mounting in an accessible location near the main electrical panel and wiring to the respective battery banks according to system amperage specifications. The key lock feature is particularly valuable in commercial marine, emergency response, and shared-vehicle scenarios where power management control must be restricted. Compatibility depends on your system's voltage (12V or 24V) and total amperage requirements; consult your electrical schematic or contact a marine electrician to ensure proper integration with your existing power architecture.