Blue Sea 3003 - HD-Series Heavy Duty Selector Battery Switch with AFD

Blue Sea 3003 - HD-Series Heavy Duty Selector Battery Switch with AFD

The Blue Sea 3003 HD-Series Heavy Duty Selector Battery Switch with AFD is an essential component for managing dual battery systems in marine applications. This switch allows you to switch between isolated battery banks or combine them to all loads, providing flexibility for your electrical system. It includes an Alternator Field Disconnect (AFD), which helps protect the alternator diodes if the switch is turned off while the engine is running. This feature ensures reliable operation and prevents damage to sensitive components. The make-before-break contact design ensures there is no interruption in power when switching between battery banks.

Built with safety in mind, the Blue Sea 3003 is ignition-protected, making it suitable for use on gasoline-powered boats. The switch is designed to be mounted either on the surface or on the rear panel, offering versatile installation options. It accepts two 4/0 AWG cables, making it compatible with high-power setups. With a continuous rating of 500A, intermittent rating of 700A (5 minutes), and a cranking rating of 1600A for 30 seconds, this switch is perfect for handling the demands of high-current applications. Its durable construction ensures long-lasting performance, while its tinned copper studs and 1/2" (M12) terminal studs provide excellent connectivity and durability.

• Switch Type: Selector 4 Position
• Alternator Field Disconnect (AFD): Yes
• Maximum Voltage: 32V DC
• Continuous Rating: 500A
• Intermittent Rating: 700A (5 min)
• Cranking Rating: 1600A for 30 seconds
• Battery Inputs: 2
• Cable Size to Meet Ratings: 4/0 AWG (120mm²)
• Weight: 1.25lb (0.57 kg)