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

Manufacturer

BEP Marine

<h3>About BEP Marine</h3><p><strong>BEP Marine</strong> has been a cornerstone of the marine electrical industry since its founding in 1995 in Auckland, New Zealand. Rooted in New Zealand's world-class yachting culture — a scene shaped in no small part by successive America's Cup campaigns — BEP Marine built its reputation on engineering electrical products that could survive the most demanding conditions on the water and beyond. Today, the brand is part of the Navico Group under Brunswick Corporation, and its products are specified as original equipment by leading boat, emergency vehicle, and RV manufacturers worldwide.</p><h3>Engineering for the Harshest Environments</h3><p>What separates BEP Marine from generic electrical suppliers is a relentless focus on real-world performance. Every product in the BEP lineup is designed to meet exacting performance specifications, capable of withstanding prolonged exposure to salt air, moisture, vibration, and extreme temperatures — both at sea and on land. BEP backs this confidence with a &quot;Trusted Quality&quot; 5-year warranty across their product range, a testament to how thoroughly their components are tested before they reach your vessel.</p><p>BEP's engineering culture also prioritizes ease of integration. Whether you're wiring a simple single-battery sailboat or a complex multi-bank power system on a large cruiser, BEP products are designed to slot into both straightforward and comprehensive electrical architectures without hassle. Their innovative product lines — including the CZone digital switching system and the Pro Installer series — represent the cutting edge of onboard power management, allowing boaters to monitor and control circuits from touchscreen interfaces and minimizing valuable space in crowded electrical panels.</p><h3>Core Product Categories</h3><p>BEP Marine's catalog spans the full spectrum of marine power management. At the heart of their offering are <a href="/11486-bep-marine-battery-switch-12204">battery switches</a>, where BEP has pioneered design innovations for decades — from compact On/Off isolation switches to high-capacity selector switches rated at 400A continuous and 600A intermittent. Their award-winning EZ-Mount line (recipient of the prestigious METS DAME award) features an industry-standard footprint that clusters with other Pro Installer components, saving precious onboard space.</p><p>For remote power control and automated charging management, BEP's <a href="/11486-bep-marine-solenoids-202547">solenoids</a> allow boaters to switch high-amperage loads using low-current control circuits — essential for bow thrusters, windlasses, and other high-draw accessories. The Digital Voltage Sensing Relay (DVSR) automates second battery bank charging with exceptional efficiency.</p><p>Rounding out the core lineup, BEP's <a href="/11486-bep-marine-battery-disconnect-switches-200143">battery disconnect switches</a> deliver reliable isolation capability for single or dual battery banks, ensuring your vessel's electrical system can be safely de-energized for maintenance, storage, or emergency situations. Motorized disconnect variants allow remote operation, making them ideal for installations where the battery is difficult to access directly.</p><h3>Who Uses BEP Marine?</h3><p>BEP Marine serves both OEM boat builders and the marine aftermarket, with a product range trusted by recreational boaters, commercial operators, and emergency vehicle fleets across North America, Europe, Asia Pacific, and Oceania. If your application demands reliable, durable, and intelligently designed electrical components, BEP Marine delivers solutions built to go the distance.</p>

Part Number

721
05/31/2036 9:46 PM
Sale Price

$94.18

In Stock (10+)

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Usually delivered within 2 days

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Live-in-stock inventory

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Fitment guaranteed

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Product Details

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.

Products specifications

Size

4" x 4"

Voltage

6-48

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