Battery Switch Single Circuit Red E Series | Blue Sea 9003E
Battery Switch Single Circuit Red E Series | Blue Sea 9003E
Blue Sea Systems
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Battery Switch Single Circuit Red E Series | Blue Sea 9003E
Battery Switch Single Circuit Red E Series | Blue Sea 9003E
BLUE SEA SYSTEMS Red E Series Battery Switch Single Circuit 9003E
The Blue Sea Red E Series Battery Switch Single Circuit 9003E is engineered for reliable power management in inboard gasoline or diesel engine setups. Designed to switch a single battery to a single load group, it offers robust performance with a 350 amp DC continuous rating and capable of handling intermittent loads up to 600 amps. The switch can endure a 1,200 amp DC cranking load for 30 seconds, supporting systems up to 48 volts DC. Its durable, reinforced polycarbonate case is corrosion-resistant and can be mounted on either the surface or rear panel for flexible installation. Tin-plated copper studs accept 3/8"-16 (M10) ring terminals and multiple cable connections up to 4/0 AWG, accommodating heavy-duty battery cables with ease. Precision-engineered to fit most standard Perko and Guest battery switch hole patterns, it measures 3.85 inches in diameter and 3.097 inches in depth. The switch meets rigorous marine standards, including ISO 8846 ignition protection, UL 1500, SAE J1171, and UL 1107 for electrical power switches, and is CE certified. Its IP66 rating ensures strong protection against dust and water intrusion, making it a dependable choice for harsh marine environments. Mounting screws (14 in., M6) are sold separately, allowing customization to specific setup requirements. This switch is ideal for professionals seeking a dependable, high-capacity battery switching solution with marine-grade durability.
Switches a single battery to a single load group for inboard gasoline or diesel engine applications.
- Blue Sea red On-Off battery switch
- e Series
- Switches a single battery to a single load
- Case design allows surface or rear panel mounting
- Molded in durable reinforced polycarbonate
- Tin-plated copper studs accept 3/8''-16 (M10) ring terminals
- 7/8 in. long stud accepts multiple cable terminals
- Accepts up to 4/0 AWG battery cables
- Constructed of non-corrosive marine grade metals
- 350 amp DC continuous rating
- 600 amp DC intermittent rating
- 1,200 amp DC 30 second cranking rating
- 48 volts DC maximum operating voltage
- Accepts 14 in. (M6) mounting screws – sold separately
- 3.85 in. diameter x 3.097 in. depth
- Designed to fit most standard Perko and Guest battery switch hole patterns
- IP 66 rated against dust ingression and water intrusion
- ISO 8846 marine
- Meets UL 1500 and SAE J1171 marine ignition protection requirements
- Meets UL 1107 standards for electric power switches
- CE certified

! Compatibility references are provided for informational purposes only and do not constitute a fitment guarantee. Part numbers, application listings, and "replaces" cross-references are based on manufacturer data and are intended as a starting point for identification — not a guarantee of fit for your specific engine, hull, or installation.
Buyer is solely responsible for verifying compatibility with their engine model, serial number, model year, and trim configuration before purchase. If you are unsure whether this part fits your application, contact MacombMarineParts.com before you buy — we're available via text, email, or online chat to help verify compatibility for your specific application.
MacombMarineParts.com is not liable for parts ordered based on assumed fitment. Returns due to buyer-selected incorrect fitment are subject to our standard return and restocking fee policies.