Perko 9703 Heavy Duty Battery Disconnect Switch, Alternator Field Disconnect, 6-32V, Ignition Protected

Overview

The Perko 9703DP is a heavy duty battery disconnect switch with alternator field disconnect for 6 to 32 volt marine electrical systems. It is ignition protected and rated for 450 amps continuous with 1200 amps intermittent capacity for 15 seconds on and 5 minutes off.

This is an ON-OFF battery switch for boats that need one clear battery shutoff point rather than a selector. It can be mounted in engine rooms on gasoline-powered boats, and the alternator field disconnect helps protect alternator diodes if the switch is turned to OFF while the engine is still running.

The body is polycarbonate with brass terminals, and the 1/2 inch terminal studs give room for secure battery cable connections where more than one cable may need to land on the switch. The housing measures 5-1/4 inches square and 3-3/8 inches deep, which is useful when replacing an older Perko switch with the same mounting pattern.

Key features

• ON-OFF battery disconnect for 6, 12, 24, and 32 volt DC marine systems
• 450 amp continuous rating and 1200 amp intermittent rating
• Ignition protected for installation in engine rooms on gasoline-powered boats
• Alternator field disconnect with F1 and F2 terminals to break field current and reduce risk to alternator diodes
• Polycarbonate body with brass terminals and 1/2 inch terminal studs for heavy battery cable connections
• 5-1/4 inch square footprint, 3-3/8 inch depth, and the traditional Perko bolt circle for replacement work

Installation and setup

Battery disconnect switches work best when battery cables are kept as short as practical and sized for the load and cable run. On boats where the switch will be used near its continuous rating in an engine compartment, cable size and insulation temperature need to match the installation.

The alternator field disconnect circuit uses minimum 14 AWG wire suitable for marine engine compartments. On systems with a separate voltage regulator, that circuit is spliced into the field lead, so this switch fits installations where the alternator wiring can be reached cleanly during a refit or replacement.

Compatibility and fit

This switch is a good match for boats that need a main battery shutoff for storage, service work, seasonal layup, or emergency shutdown. It also makes sense in refit jobs where the existing bulkhead or panel already matches the Perko mounting pattern.

Because it is a disconnect switch, it suits battery isolation duty rather than multi-bank battery selection. That keeps the job simple on boats where the main requirement is to connect or disconnect the electrical system at one dependable point.

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Deliveries are handled by preferred carriers such as USPS, UPS, FedEx, DHL, and others depending on your location and selected service. Estimated delivery times are displayed at checkout and may vary due to customs processing, carrier delays, weather, postal disruptions, or other circumstances beyond our control. Once your order ships, you'll receive a confirmation email with tracking information. Tracking may take up to 24 hours to update on the carrier's website and is also available through your account when applicable.

We ship throughout the United States and to most international destinations for products eligible for international shipping. International orders may be subject to customs duties, taxes, brokerage charges, or other import fees, which are the customer's responsibility and are not included in the product or shipping price. PO Boxes are accepted only when shipping through USPS, and not all packages qualify for this option. If your order does not arrive within the estimated delivery window, please contact us at info@apollolighting.com or +1 (954) 375-0100 so we can assist with locating your package.

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Returns may be requested within 30 days of receiving your order. Items must be unused, uninstalled, unaltered, and returned in their original packaging with all tags, packing materials, blank warranty cards, manuals, instructions, accessories, and included items. Certain products, including installed or used electronics, electrical components, lighting, consumables, custom or special-order items, cut-to-length products, safety equipment, and merchandise exposed to water or marine conditions, may not be eligible for return.

To request a return, sign in to your account and select the applicable order and items, and submit your request for review. Eligible unfulfilled items may also be submitted for cancellation within 1 hour of placing the order. Returns or cancellations are not considered approved until you receive confirmation from Apollo Lighting. Please do not ship or drop off merchandise before receiving return approval and instructions.

Customers are responsible for arranging and paying for return shipping unless the return is due to an error by Apollo Lighting or the item is verified as defective, damaged, or incorrect. Missing, damaged, defective, or incorrect items must be reported within 2 business days of delivery, and photos or other documentation may be required for review. If the issue is verified, Apollo Lighting may provide or reimburse return shipping and issue a replacement or refund depending on the circumstances. International customers are responsible for return shipping, duties, taxes, customs charges, brokerage fees, and other costs associated with an international return.

After your return is received and inspected, approved refunds are issued to the original payment method and may take 5-7 business days to appear after processing. Original shipping and handling charges are nonrefundable, and the value of any included free items that are not returned may be deducted from the refund. Apollo Lighting does not charge a standard restocking fee on eligible returns. Returns that are incomplete, damaged, installed, used, altered, improperly packaged, or otherwise do not meet the eligibility requirements may be refused. We recommend using a trackable and appropriately insured shipping service for all customer-arranged returns.

For assistance, contact info@apollolighting.com or call +1 (954) 375-0100.

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Many products sold by Apollo Lighting include a manufacturer's warranty covering defects in materials or workmanship. Warranty terms vary by brand, product category, and model, so eligibility, coverage duration, exclusions, and available remedies are determined by the applicable manufacturer. We recommend reviewing the warranty information provided with your product before installation or use, especially for marine electronics, navigation equipment, lighting, electrical systems, pumps, safety equipment, and other specialized marine products.

If you need warranty service, the claim must follow the process established by the manufacturer, authorized service center, or designated warranty provider. You may be asked for proof of purchase, a serial number, product registration, photos, maintenance or installation records, or other documentation. Apollo Lighting does not determine or modify a manufacturer's warranty coverage or final claim decision, but we are happy to help provide purchase information and direct you to the appropriate manufacturer or warranty resource.

Keep your receipt, product documentation, serial number information, and original packaging when practical. Damage caused by normal wear, misuse, improper installation, insufficient maintenance, corrosion, impact, unauthorized modifications, electrical issues, or operation outside the manufacturer's specifications may not be covered. Warranty claims are separate from standard returns, so a product that has been installed, used, or exposed to marine conditions may no longer qualify for return while still remaining eligible for evaluation under the manufacturer's applicable warranty.

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