Perko 8521DPC Compact Dual Battery Selector Switch with Cup Mount

The Perko 8521DPC Compact Dual Battery Selector Switch features a unique cup-mount (recessed mount) design that encloses the switch behind a durable, easy-open cover, protecting the switch face from the elements while maintaining a clean, professional appearance. This switch requires a 4-inch installation hole and is ideal for marine, RV, and automotive applications where space is limited.

Key Features:

• Four position selector: Battery 1, Battery 2, Both batteries combined, or Off
• Make-before-break design prevents power interruption when switching between batteries
• Ignition protected for safe operation in marine environments
• Removable key provides additional security to prevent unauthorized use
• Emergency disconnect capability for electrical system protection
• Allows parallel operation of both batteries for starting or charging
• Recessed mounting design protects switch from accidental contact and weather exposure

This dual battery switch provides complete control over your electrical system, allowing you to alternate between batteries to ensure you always have starting power available. The parallel "Both" position combines both batteries for additional cranking power or to charge a depleted battery from your alternator.