Perko 9612 Compact Medium Duty Main Battery Disconnect Switch with Key Lock, Ignition Protected, 6-32V, 315A Continuous, 450A 5-Min Intermittent

Overview

The Perko 9612DP is a compact medium duty main battery disconnect switch with key lock for 6 to 32 VDC marine electrical systems. It is an On/Off switch, not a battery selector, and it carries a 315 amp continuous rating with 450 amp intermittent capacity. The housing measures 4 in. wide by 4 in. high by 3 in. deep and uses 3/8 in. terminal studs.

This switch is ignition protected, so it can be installed in gasoline engine rooms when the wiring is done correctly. It uses the same bolt pattern as the Perko 8500 Series, needs about one-third less mounting space, and adds keyed security by locking in the OFF position.

Key features

• 6 to 32 VDC operating range for common 12V, 24V, and 32V marine systems
• 315 amp continuous rating and 450 amp intermittent rating for medium duty main battery disconnect use
• Ignition protected for use in gasoline engine room installations
• Key lock secures the switch in the OFF position and the key can be removed in the locked or unlocked position
• Same bolt pattern as the Perko 8500 Series for easier replacement work
• Requires about one-third less mounting space than the 8500 Series
• Four removable skirt panels help route cables from different directions during installation
• Polycarbonate body with brass terminals and 3/8 in. terminal studs

Installation and fit

The body is made for surface mounting on a flat surface. Four removable skirt panels let the installer bring battery cables in from different directions, which helps when space around the battery bank, console, or engine room bulkhead is limited. Perko specifies #10 pan head or round head mounting screws and 15 ft-lbs of torque on the terminal nuts.

For retrofit work, the shared 8500 Series bolt pattern can simplify replacement without reworking the mounting face. Keeping cable runs short is still the right approach for this type of switch, and in areas exposed to corrosion it makes sense to protect the terminal connections with an electrical coating.

Electrical use on board

This switch is used to connect or isolate the battery feed from the rest of the boat, which helps reduce battery drain during layup and gives you a fast full-system shutoff in an emergency. It is suitable for systems that run with alternators and generators within its 6 to 32 VDC range.

This version does not include alternator field disconnect. It is a good match for boats that need a straightforward main battery cutoff with keyed lockout rather than a multi-bank selector switch.

Orders are processed within 2 business days, which includes verification, packing, and dispatch. Orders of $100 or more qualify for free shipping when eligible. For orders under $100, shipping costs are calculated at checkout based on destination, package weight, and selected service. International shipping is available for eligible products, and certain items may require additional handling, warehouse transfers, or may ship directly from the manufacturer, which can affect processing time.

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.

Learn more.

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.

Learn more.

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.

Learn more.