Blue Sea Systems m-Series Mini Dual Circuit Battery Switch, 32V DC, 300A

Overview

The Blue Sea Systems m-Series Mini Dual Circuit Battery Switch is a 2-position ON-OFF battery switch for controlling two isolated battery banks or circuits from one compact switch. It is rated for 32V DC systems, with a 300A continuous rating, a 450A intermittent rating for 5 minutes, and a 675A starting rating for 30 seconds per circuit.

This switch suits boats that need two circuits opened or closed at the same time, such as installations where positive and negative conductors must be switched together or where two isolated DC circuits are controlled from one location. It does not include a battery combine function, so it keeps the switching layout simple and predictable.

The m-Series Mini format helps in tight helm, console, battery compartment, and engine-room layouts. Tinned copper 3/8"-16 terminal studs, 4/0 AWG cable rating, #10 mounting screw holes, ignition protection, and an IP66 rating make it appropriate for marine electrical spaces exposed to vibration, humidity, and washdown conditions.

Key features

• Dual Circuit switch type simultaneously controls two isolated battery banks or circuits.
• 2 switch positions keep operation simple with ON and OFF control.
• 32V DC maximum voltage supports common 12V and 24V marine DC systems within the rated limit.
• 300A continuous rating with 450A intermittent capacity for 5 minutes and 675A starting capacity for 30 seconds per circuit.
• 3/8"-16 terminal studs accept 3/8" and M10 ring terminals for heavy battery cable connections.
• Rated for 4/0 AWG cable, with 1.12 in clearance for large cable runs.
• Tinned copper stud material helps maintain conductivity in marine electrical installations.
• Ignition protected and listed with ISO 8846, SAE J1171, UL 1107, UL 1500, CE, and IP66 regulatory ratings.
• Mounting holes accept #10 screws for secure installation in panels, battery compartments, or equipment spaces.
• Battery combine and alternator field disconnect functions are not included, which keeps the switch focused on dual-circuit ON-OFF control.

Variants

This product is offered in two color configurations for matching the switch location, panel layout, or existing battery management hardware on board.

The core switch function and electrical ratings remain consistent across the red and black versions. The visible color is the practical difference between the two variants.

• 6010, color red. The red version stands out clearly in battery compartments and helm-side electrical panels where quick visual identification is useful.
• 6010200, color black. The black version has a more understated look for darker panels, consoles, and equipment boards.

Installation and fit

Use the switch in a location where the operator can reach it easily and where battery cables can be routed without sharp bends or strain on the studs. The 4/0 AWG cable rating and 1.12 in cable clearance are important to confirm before replacing an older switch or planning a new battery layout.

Terminal stud torque is 120 in-lb, or 13.56 Nm. Matching the terminal size, cable gauge, and torque specification helps keep the connection secure in a high-current DC system, especially on boats that see engine vibration or rough-water movement.

Electrical use on board

This Dual Circuit switch is a good match for installations that need two circuits to move together rather than a selector or combine-style battery switch. It can be used where separate circuits must remain isolated while still being controlled with one switch action.

Because the switch has no battery combine function, it should not be treated as an emergency parallel switch. For systems that require charging automation, emergency combining, or multi-bank management, the rest of the battery system layout should be reviewed before installation.

Marine environment

The IP66 rating supports use in protected marine areas that may see spray or washdown, while ignition protection supports installation aboard gasoline-powered boats when the overall installation follows applicable marine electrical practices.

For long service life, mount the switch where standing water cannot collect on the rear terminals, keep cable lugs clean and tight, and inspect the connections during routine battery and engine-room checks.

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.

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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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