Product Overview
Battery Switch "E" 4 Pos W/Hfd

Take command of your vessel's electrical system with the Blue Seas Battery Switch "E" 4 Pos W/HFD. This robust, 4-position selector switch provides ultimate control and flexibility for managing your power, ensuring reliable starts, preserving battery life, and protecting your sensitive electronics. Designed for demanding marine environments, this red switch combines rugged construction with intelligent features like alternator field disconnect (AFD) and make-before-break switching for seamless transitions between power sources.
Key Features
- **4-Position Selector:** Offers complete control over your battery banks – select battery 1, battery 2, combine both for parallel power, or completely disconnect power for storage or maintenance.
- **Integrated Alternator Field Disconnect (AFD):** Protects your alternator's diodes from damage when switching the battery off while the engine is running.
- **Make-Before-Break Switching:** Ensures uninterrupted power to critical systems during battery switching, preventing resets or damage to sensitive electronics.
- **High-Amperage Ratings:** Handles heavy electrical loads with a 325A continuous rating, 600A intermittent rating, and a whopping 1200A starting rating, making it suitable for a wide range of boats.
- **Durable Construction:** Built to withstand harsh marine conditions with ignition protection and an IP66 rating for water resistance, ensuring reliable performance.
- **Tinned Copper Studs and Stainless Steel Hardware:** Maximizes conductivity, resists corrosion, and ensures secure connections for years of trouble-free service.
- **Versatile Mounting:** Can be mounted on the surface or rear panel for flexible installation options.
- **Compatible with 7902 Battery Switch ICON Label Kit (sold separately):** Allows for clear and customized labeling of switch positions for added safety and convenience.
Specifications
The Captain's Take
After years of battling unreliable battery switches, I switched to the Blue Seas "E" Series. The difference is night and day. The solid construction, smooth operation, and integrated AFD give me peace of mind knowing my electrical system is in top shape. This switch is a must-have for any serious boater.