BEP Marine - 721 On-Both-On-Off Heavy Duty Switch - Up To 500 Amps

Heavy-Duty Battery Selector for Reliable Marine Power Management

The BEP Marine 721 Heavy Duty Battery Selector Switch is designed for robust and efficient battery management in marine applications. This high-performance switch allows users to select between two batteries, operate both simultaneously, or disconnect power entirely. Engineered for durability, the 721 model is housed in a modular unit with removable plates and a back cover for flexible installation. While it offers a cost-effective method for managing dual battery systems, it is important to note that selector switches do not isolate sensitive electronics from engine starting spikes.

High-Capacity Electrical Performance

Built to handle substantial power demands, the 721 Battery Selector Switch delivers impressive electrical ratings to support various marine systems:

• Continuous Rating: 350 Amps DC (between common B1 or B2)
• Continuous Rating: 500 Amps DC (between common B1 + B2)
• Intermittent Rating: 500 Amps DC
• Cranking Rating: 1500 Amps DC
• Voltage Rating: 48 Volts DC

Versatile Operation and Installation

The switch features a user-friendly Selector-Battery 1-2-Both-Off operation, offering seamless control over power distribution. It supports both recessed and surface mounting, ensuring compatibility with different marine setups. The tin-plated copper studs and nuts provide superior conductivity and corrosion resistance, essential for harsh marine environments.

Compact and Durable Design

• Dimensions: 102 x 102 x 90 mm (4 x 4 x 3.5 inches)
• Termination Stud Size: 3 x 10mm (3/8")
• Ignition Protected for enhanced safety in marine applications

Key Features at a Glance

• Heavy-duty battery selector switch for marine power systems
• Supports single or dual battery operation
• Rated for up to 1500 Amps DC cranking power
• Durable tin-plated copper terminals for corrosion resistance
• Flexible mounting options for different vessel configurations
• Modular design with removable plates and back cover for easy installation

Designed for reliability and ease of use, the BEP Marine 721 Heavy Duty Battery Selector Switch is an excellent choice for marine professionals and enthusiasts seeking efficient battery management solutions.

Shipping
We ship worldwide from the United States. Rates are calculated at checkout based on destination and package weight. Some items include free shipping, which will show automatically. Not every product is eligible for international shipping; checkout will confirm eligibility. We do not ship to PO Boxes except through USPS, and not all packages qualify.

Processing and dispatch
Most orders are verified, packed, and handed to the carrier within 1 to 2 business days. Some products may need extra handling time or ship directly from the manufacturer. For certain international orders, inventory transfers between warehouses may add time. If any delay is expected, we will let you know the dispatch date.

Delivery and tracking
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Duties, taxes, and support
International customers are responsible for any customs duties, taxes, and fees charged by the destination country. If these charges are refused and a shipment returns to us, the carrier’s return cost and any re-entry customs fees will be deducted from the refund. If your order is late or you need help, contact cs@qualityboatparts.com and we will assist you.

Quality Boat Parts is a reseller. Many items include a manufacturer’s warranty, and all warranty service is handled directly by the manufacturer. We do not manage or administer warranty claims on behalf of customers.

Warranty terms, coverage, and duration are set by each manufacturer. Issues involving defects, repairs, or replacements must be addressed with the manufacturer’s support team. When available, the warranty period is listed on the product page. If it is not shown, contact us or the manufacturer for details before purchasing.

To start a claim, the customer must contact the manufacturer and follow their process. Keep your proof of purchase and original packaging, and register the product if the manufacturer requires it, as these are often needed for warranty service.

We are happy to help you find the right contact or documentation, but we cannot decide outcomes or intervene in claim resolutions. For guidance, email cs@qualityboatparts.com.