BEP Marine 721 Heavy-Duty Battery Selector Switch 1-2-Both-Off 350A Continuous

The BEP Marine 721 is a heavy-duty battery selector switch designed for robust battery management on larger marine vessels. This professional-grade switch allows users to select between two batteries, operate both simultaneously, or disconnect power entirely with its 1-2-Both-Off configuration.

Key Features:

• Self-cleaning sliding contact design for reliable long-term operation
• Fits into the Contour Lock System for standalone use or integration with other switches
• Modular housing with removable plates and back cover for flexible installation options
• Available for both recess mount and surface mount applications
• Heavy-duty construction built to withstand harsh marine environments

Electrical Specifications:

• Continuous Rating: 350 Amps DC (between common and B1 or B2)
• Continuous Rating: 500 Amps DC (between common and B1 + B2 combined)
• Intermittent Rating: 500 Amps DC
• Cranking Rating: 1500 Amps DC for high-demand starting applications
• Voltage Rating: 48 Volts DC maximum
• Stud Size: 3 x 3/8" (Imperial) or 2 x 10mm (Metric)

The BEP 721 offers a simple, economical solution for managing dual battery systems on boats, providing essential power control for marine electrical systems. Note that selector switches do not isolate sensitive electronics from engine starting voltage spikes; isolated battery systems are recommended for advanced electronics protection.