Blue Sea Systems 5511E e-Series Dual Circuit Plus Battery Switch 350A

The Blue Sea Systems e-Series Dual Circuit Plus Battery Switch provides professional-grade power management for marine electrical systems. This advanced switch isolates Start and House battery circuits, preventing accidental discharge of the starting bank while protecting sensitive electronics from voltage sags and spikes during engine cranking. The emergency combine feature allows cross-connection of both battery banks when additional power is needed for starting or critical radio calls.

Key Features:

• Dual circuit design maintains battery bank separation while enabling simultaneous switching
• Emergency combine function draws power from both batteries when needed
• 350 ampere continuous rating per circuit with 1000 ampere total capacity
• 700 ampere cranking rating for 30 seconds handles high-demand starting loads
• Long 7/8" tin-plated copper studs accept up to 4/0 AWG cables
• Ignition protected for safe installation in gasoline engine compartments
• Tactile face textures enable operation by feel in low-light conditions
• Compatible with Perko and Guest low-amperage switch mounting patterns
• Surface or rear panel mounting options for flexible installation
• Includes snap-out isolator covers and identification labels

Technical Specifications:

• Maximum Voltage: 32V DC
• Continuous Rating: 350A per circuit
• Intermittent Rating: 525A (5 minutes)
• Cranking Rating: 700A (30 seconds)
• Terminal Stud Size: 3/8" x 7/8" long
• Recommended Cable Size: 4/0 AWG for rated capacity
• Mounting Holes: Four 1/4" diameter
• Dimensions: 3-5/8" diameter x 2-5/8" depth
• Certifications: UL 1107, UL 1500, SAE J1171, ABYC compliant

UL Listed for safety and reliability, this switch meets stringent ABYC battery switch standards. The one-piece cast copper studs handle high torque loads required for secure, low-resistance connections. Ideal for use with Automatic Charging Relays to create a simplified, automated battery management system. Backed by Blue Sea Systems lifetime warranty.