Blue Sea 300A Black Mini m-Series 3 Position (OFF/1/2) Battery Selector Switch Popular or rear panel mounting

or rear panel mounting

With its robust design and MC4 compatibility

The included isolating cover with snap-on sections protects rear contacts

This makes it a strong choice for under‑bonnet fitment in many vehicles and for installations where vibration resistance and safety are priorities

Blue Sea 300A Black Mini m-Series 3 Position (OFF/1/2) Battery Selector Switch Popular or rear panel mountingHigh Current Battery Selector Switch for Marine & 4WD Dual Battery Systems The Blue Sea m Series Mini 3 Position Battery Selector Switch is designed for dependable, high current battery management where clear isolation and simple selection matter. In boats, caravans, camper trailers and 4WD touring vehicles, battery systems are often asked to support critical loads such as fridges, lighting, comms, bilge pumps, winches and inverters. This switch