The Cole Hersee Battery Master Switch provides dependable battery isolation and system shutdown protection for commercial, agricultural and recreational vehicles. Designed as a DPST device with an integrated field circuit it allows simultaneous disconnection of positive and negative battery feeds while isolating the alternator field to prevent backfeed. Rated for operation across 9-36V systems it is suitable for both 12V and 24V electrical architectures and is ideal for maintenance, storage and theft deterrence applications. Durable construction and clear on off operation make it a practical fit for trucks, heavy equipment, boats and off road vehicles.

• Type DPST for double pole single throw battery isolation
• Integrated field circuit to disable alternator when switched off
• Operating voltage range 9-36V suitable for 12V and 24V systems
• Robust construction for harsh environments and regular use
• Provides positive battery disconnect for maintenance safety and theft prevention
• Simple installation with battery and field terminals for straightforward wiring

Use this switch to isolate batteries during service or storage and to prevent parasitic drain. If vehicle information was referenced in the product name confirm compatibility with your application by using the Parts Checker before purchase and consult wiring diagrams or a qualified technician for installation.