Part Number: 9003e
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Description: Heavy-duty battery disconnect switch for reliable single-circuit power isolation.
e-Series On-Off Battery Switch
Take control of your battery-powered electrical system with the Blue Sea Systems e-Series On-Off Battery Switch (Part #9003e). Built for high-current marine, RV, overland, commercial, and off-grid applications, this heavy-duty battery disconnect switch provides a safe, reliable method for isolating a single battery from a single load group while protecting your electrical system during storage, maintenance, or emergencies.
Whether you're powering a Victron Energy system, an RV house battery bank, a camper van, a boat, or a fleet vehicle, the e-Series battery switch helps eliminate parasitic battery drain and gives you the confidence of a positive battery disconnect whenever your system isn't in use.
Designed with professional installers in mind, the Blue Sea 9003e features a rugged thermoplastic housing, corrosion-resistant tinned copper studs, and a robust switching mechanism capable of handling demanding electrical loads. Rated for 350 amps continuous, 600 amps intermittent (5 minutes), and 1,200 amps cranking (30 seconds), it easily supports large lithium and AGM battery systems used in today's high-performance mobile power installations.
The switch supports 12V, 24V, and 48V DC systems and accepts cable sizes up to 4/0 AWG, making it suitable for everything from small battery banks to large inverter-powered electrical systems. Its ignition-protected design allows installation in gasoline engine compartments, while multiple mounting options—including surface and rear-panel mounting—provide flexibility for nearly any installation layout.
Simple ON/OFF operation makes battery isolation quick and intuitive while improving safety during maintenance and long-term storage. Whether you're upgrading an RV electrical system, installing a marine battery disconnect, or designing an off-grid power solution, the Blue Sea Systems e-Series On-Off Battery Switch delivers the durability and reliability trusted by professional installers worldwide.
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