Perko 9603 DP Battery Selector Switch with Alternator Field Disconnect

The Perko 9603 DP is a heavy-duty battery selector switch designed for marine applications, featuring an integrated alternator field disconnect for enhanced electrical system protection. This switch allows you to select between two battery banks or combine them for parallel operation, while the alternator disconnect feature prevents voltage spikes that can damage sensitive electronics when switching between batteries.

Key Features:

• Four-position selector switch: OFF, Battery 1, Battery 2, and BOTH positions
• Built-in alternator field disconnect protects alternator and electronics during battery switching
• Heavy-duty construction with corrosion-resistant materials for marine environments
• Continuous duty rating ensures reliable performance in demanding applications
• Ignition protected design meets ABYC and USCG safety standards
• Lockable key-operated switch prevents unauthorized battery drain

The alternator field disconnect feature automatically disconnects the alternator field circuit when the switch is rotated, preventing dangerous voltage spikes that occur when switching batteries while the engine is running. This makes the Perko 9603 DP ideal for installations where battery switching under load may be necessary, protecting both your alternator and connected electronics from potential damage.