Perko Medium Duty Main Battery Disconnect Switch w/Alternator Field Disconnect & Key Lock

The Perko Medium Duty Main Battery Disconnect Switch w/Alternator Field Disconnect & Key Lock provides essential power management for boaters who prioritize safety and security on the water. This marine-grade switch allows users to isolate their battery systems, preventing parasitic drain during storage and ensuring a reliable start every time you leave the dock. By integrating a key lock, it adds a layer of theft deterrence and prevents unauthorized operation of the vessel's electrical systems. Whether you are maintaining a dedicated fishing rig or a weekend cruiser, this switch is a critical component for any 12, 24, or 32-volt electrical setup.

Engineered for long-term reliability, this unit is rated for 250 amps continuous and 360 amps intermittent duty, making it suitable for a wide range of medium-duty marine applications. The inclusion of an Alternator Field Disconnect is a vital technical feature that protects the alternator diodes if the switch is accidentally turned off while the engine is running. Being ignition protected, the housing is designed for safe installation in engine compartments where gasoline fumes may be present. Its compact design allows for flexible mounting in tight battery boxes or consoles without compromising on durability or electrical performance.

Owners of various watercraft will find this switch indispensable for managing multi-battery configurations or simply securing a single-battery setup against discharge. For those looking to buy a dependable disconnect, the key lock mechanism ensures that the power stays off and the vessel remains immobilized when you are away from the slip. The specifications of this model make it compatible with most standard marine wiring and charging systems found in modern offshore and inland vessels. When you review your boat's safety requirements, adding this Perko disconnect provides peace of mind that your electrical system is both protected and controlled.