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[Lifetime Warranty] 350A 9002E e-Series Battery Switch 350A Continuous 12V to 32V Battery Combiner and Selector Switch 4 Position

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350A 9002E e-Series Battery Switch 350A Continuous 12V to 32V Battery Combiner and Selector Switch 4 Position

Key Features

  • Electrical Rating: 350A continuous, 600A intermittent (5 min), 1200A cranking (30 sec).
  • Voltage: Rated for up to 32V DC systems.
  • Functionality: 4-position selector switches between two isolated battery banks or combines them for emergency starting or charging.
  • Construction: Tin-plated copper studs for maximum conductivity and corrosion resistance.
  • Design: Continuous contact design allows switching between battery banks without power interruption.
  • Safety: Ignition protected (ISO 8846) and waterproof (IP66) for use in marine engine compartments.
  • Mounting: Case design allows for surface, rear panel, or front panel mounting options.

Replaces / Cross-Reference Part Numbers

  • 9002E
  • Blue Sea Systems 9002E

Compatibility & Fitment

  • Application: Designed for marine vessels, RVs, and heavy-duty vehicles with multi-battery systems.
  • System Voltage: Compatible with 12V, 24V, and 32V DC electrical systems.
  • Terminals: Accepts 3/8"-16 (M10) ring terminals.

When to Replace

  • Switch fails to make a reliable connection, causing intermittent power.
  • Physical damage to the housing, terminals, or selector knob.
  • Signs of overheating, arcing, or melting at the terminals.
  • Selector knob becomes excessively stiff, loose, or will not engage in a set position.

Installation Tips

  • Disconnect all battery negative terminals before starting the installation.
  • Use marine-grade wiring and terminal lugs sized appropriately for the system's amperage.
  • Ensure all cable connections are clean and tighten terminal nuts to the manufacturer's specified torque.
  • Mount the switch in an accessible location, protected from direct spray and physical impact.
  • After installation, test all switch positions to confirm correct operation before reconnecting loads.
Product image
  • PERFECT FIT

    PERFECT FIT

    Our product is suitable for a Boats, Marines, Cars, Vehicles, Campers, RV, Motorcycles, Yachts battery, and other engine applications.
  • PREVENTS BATTERY DRAIN

    PREVENTS BATTERY DRAIN

    Our product prevents unnecessary drain when the vehicle is not in use, useful for long periods of inactivity.
  • SAVING SOLUTION

    SAVING SOLUTION

    BlueStars brings DIY solutions to help you deal with any trouble!
  • SIMPLE INSTALLATION

    SIMPLE INSTALLATION

    Our Battery Switch is designed to be easily install, allowing for quick and convenient maintenance.
SUPERIOR MATERIALS

SUPERIOR MATERIALS

The battery switch features durable heavy-duty housing constructed from Stainless Steel Studs.

FAQ

AFD stands for Alternator Field Disconnect. This feature protects the alternator diodes from damage if the switch is accidentally turned to the 'OFF' position while the engine is running. It provides a path to disconnect the alternator field circuit before the main battery circuit is broken.
Yes. The 9002e is ignition protected, meaning it meets UL and SAE requirements for external ignition protection, making it safe for installation aboard gasoline-powered boats.
This switch is rated for 350 Amps continuous service, making it suitable for most inboard gasoline or diesel engines. It is designed to operate within a voltage range of 12V to 32V DC.
The switch measures 3.85 inches in height, 3.85 inches in width, and 3.097 inches in depth. It is rated IP66, meaning it is protected against powerful water jets and is suitable for marine environments.
The four positions are OFF, 1, 2, and BOTH (1+2). This allows you to select between two separate battery banks, combine them for emergency starting, or isolate them completely.