Item Number
9003E
Blue Sea Systems
Item Number: 9003E
SWITCH BATTERY E ON/OFF (Blue Sea Systems)
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WARNING: Cancer and Reproductive Harm - www.p65warnings.ca.gov
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Blue Sea Systems
Item Number: 9003E
WARNING: Cancer and Reproductive Harm - www.p65warnings.ca.gov
Tue, May 26 – Wed, May 27
9003E
0.92 lb
EACH
Heavy-Duty Battery Disconnect Switch for Marine, RV, and Off-Grid Applications
The Blue Sea Systems 9003E e-Series ON/OFF Battery Switch is a compact, ignition-protected rotary switch engineered for safely disconnecting battery banks from electrical systems. With a rating of up to 350A continuous at 12V DC, this switch is ideal for isolating a single battery or managing electrical load during maintenance, storage, or emergency shutoff.
Trusted by marine, RV, and industrial professionals worldwide, the 9003E is built to Blue Sea Systems’ rugged marine-grade standards and is certified for use in ABYC and USCG-compliant systems.
Simple ON/OFF Rotary Action
Intuitive 90° rotation design for quick disconnect or reconnection of a single battery.
Ignition Protected (ISO 8846)
Safe for installation in engine rooms and gasoline-powered compartments—no risk of ignition from switch operation.
High Current Capacity
Rated for 350A continuous, 600A intermittent, and 1500A cranking at 12V DC, making it ideal for large battery banks and starter circuits.
Surface or Recess Mount
Versatile design mounts easily on bulkheads or panels, with removable side panels for cable routing.
Isolates Battery Banks Safely
Prevents battery drain, electrical shorts, and unintended equipment use when off the water or on the road.
UL 1107 Certified
Meets stringent marine safety standards for battery switches.
Function: ON/OFF
Configuration: Single circuit (switches a single battery to a single load)
Stud Size: 3/8"-16 (tin-plated copper studs)
Maximum Voltage: 48V DC
Continuous Rating: 350A @ 12V DC
Intermittent Rating: 600A (5 minutes)
Cranking Rating (30 sec): 1500A
Mounting Options: Surface or rear panel mount
Ingress Protection: IP66 (Water resistant)
Weight: 0.77 lb (0.35 kg)
Dimensions: 3.85" x 3.85" x 3.0"
Main battery disconnect for marine or RV systems
Isolation switch for solar or off-grid battery banks
Emergency shutoff switch for auxiliary or starter circuits
Maintenance disconnect during system servicing
No reviews have been added for this product.
Blue Sea Systems
Item Number: 9003E
WARNING: Cancer and Reproductive Harm - www.p65warnings.ca.gov
Tue, May 26 – Wed, May 27
9003E
0.92 lb
EACH
Heavy-Duty Battery Disconnect Switch for Marine, RV, and Off-Grid Applications
The Blue Sea Systems 9003E e-Series ON/OFF Battery Switch is a compact, ignition-protected rotary switch engineered for safely disconnecting battery banks from electrical systems. With a rating of up to 350A continuous at 12V DC, this switch is ideal for isolating a single battery or managing electrical load during maintenance, storage, or emergency shutoff.
Trusted by marine, RV, and industrial professionals worldwide, the 9003E is built to Blue Sea Systems’ rugged marine-grade standards and is certified for use in ABYC and USCG-compliant systems.
Simple ON/OFF Rotary Action
Intuitive 90° rotation design for quick disconnect or reconnection of a single battery.
Ignition Protected (ISO 8846)
Safe for installation in engine rooms and gasoline-powered compartments—no risk of ignition from switch operation.
High Current Capacity
Rated for 350A continuous, 600A intermittent, and 1500A cranking at 12V DC, making it ideal for large battery banks and starter circuits.
Surface or Recess Mount
Versatile design mounts easily on bulkheads or panels, with removable side panels for cable routing.
Isolates Battery Banks Safely
Prevents battery drain, electrical shorts, and unintended equipment use when off the water or on the road.
UL 1107 Certified
Meets stringent marine safety standards for battery switches.
Function: ON/OFF
Configuration: Single circuit (switches a single battery to a single load)
Stud Size: 3/8"-16 (tin-plated copper studs)
Maximum Voltage: 48V DC
Continuous Rating: 350A @ 12V DC
Intermittent Rating: 600A (5 minutes)
Cranking Rating (30 sec): 1500A
Mounting Options: Surface or rear panel mount
Ingress Protection: IP66 (Water resistant)
Weight: 0.77 lb (0.35 kg)
Dimensions: 3.85" x 3.85" x 3.0"
Main battery disconnect for marine or RV systems
Isolation switch for solar or off-grid battery banks
Emergency shutoff switch for auxiliary or starter circuits
Maintenance disconnect during system servicing
