Blue Sea Systems 11001 e-Series 3-Position Battery Selector Switch with AFD

The Blue Sea Systems e-Series 11001 is a compact, high-performance battery selector switch designed for marine applications. This 3-position switch features integrated alternator field disconnect (AFD) technology that protects alternator diodes if the switch is inadvertently turned to the OFF position while the engine is running, preventing costly electrical system damage.

Built for durability and ease of installation, this switch offers a compact footprint with dual mounting options for surface or rear-of-panel installation. The ignition-protected design meets marine safety standards, allowing installation in the engine rooms of gasoline-powered vessels. One-piece tin-plated copper terminal studs measure 7/8" in length and accommodate multiple cable connections with 3/8" stud sizing, supporting cable sizes up to 4/0 AWG.

Key Features:

• Alternator field disconnect (AFD) protects alternator diodes during operation
• Compact 3 5/8" diameter design fits in tight installation spaces
• Dual mounting options: surface mount or rear-of-panel installation
• Ignition protected for engine room installation on gasoline boats
• Tactile textured face and knob enable operation in low-light conditions
• One-piece copper studs accept multiple cables and high torque connections
• Compatible hole pattern with Perko and Guest low-amperage switches
• Includes snap-out isolator covers for added safety
• Lifetime warranty coverage

Technical Specifications:

• Dual circuit design with 3 switch positions
• Maximum voltage: 32V DC
• Continuous rating: 350A
• Intermittent rating: 600A (5 minutes)
• Cranking rating: 1200A (30 seconds)
• 2 battery inputs with no battery combine function
• Dimensions: 3 5/8" diameter x 2 5/8" depth
• Weight: 3 lbs
• Certifications: ABYC E-11, UL 1107, UL 1500, SAE J1171, CE, ISO 8846

Ideal for boats requiring reliable battery management with alternator protection, this switch can function as a standalone unit or integrate into larger marine electrical systems.