BATTERY MASTER ISOLATION SWITCH - 4PN The REDARC BMIS4PNV2KIT is a Battery Master Isolation Switch with positive negative isolation designed to isolate both battery circuits.
BATTERY MASTER ISOLATION SWITCH - 4PP The REDARC BMIS4PPV2KIT is a Battery Master Isolation Switch with positive positive isolation designed for heavy vehicles with dual start cables to isolate both battery circuits.