Ultraflex 721 Battery Switch B1 B2 48V 350A - 63143E

The Ultraflex 721 Battery Switch B1 B2 Selector is a high-current battery switch designed for use in electrical installations of boats, yachts, and specialized vehicles where reliable power management from two independent batteries is required. The device allows selection of the power source – Battery 1 (B1), Battery 2 (B2), both simultaneously, or complete circuit disconnection, enabling safe disconnection of the system during servicing or extended downtime. The switch is panel-mounted, ensuring robust construction and resistance to harsh environmental conditions.

• Continuous current: 350A
• Intermittent current (short-term): 1000A for 5 seconds
• Maximum voltage: 48V DC
• Number of switching positions: 4 (OFF, B1, B2, B1+B2)
• Mounting type: panel
• Housing material: corrosion-resistant plastic
• Protection rating: IP56
• Dimensions: 135x135x75mm
• Weight: 0.7kg
• Operating temperature range: -25°C to +60°C
• Compatibility: lead-acid, AGM, gel batteries
• Standards/certificates: CE, ISO 8846 (ignition protection)
• Warranty: 2 years
• Series: 721

Part Number: 63143E