Victron Energy Battery Switch ON/OFF, 275A, 48V, ISO8846, Surface or Panel Mount

Overview

The Victron Energy VBS127010010 is a Battery Switch ON/OFF 275A for isolating a DC battery circuit on boats and other mobile power systems. It is rated for 275A continuous DC current, supports battery systems up to 48V nominal, and has a maximum DC operating voltage of 60V. Use it as a main battery disconnect, service isolation point, or emergency shutoff for house batteries, starter circuits, alternator circuits, DC loads, chargers, or an inverter feed.

The switch can be surface mounted or rear panel mounted, so it fits battery compartments, helm panels, lockers, and engine-room layouts where cable access and hand clearance matter. The removable knob lets the circuit stay off during maintenance or when a vessel is left unattended, while ISO8846 / SAE J1171 ignition protection supports installation in engine-room areas when fitted correctly.

Key features

• 275A continuous DC current rating, with 455A for 5 minutes and 1250A cranking capacity for 10 seconds.
• Works with battery systems up to 48V and a maximum DC operating voltage of 60V.
• Surface mount or rear panel mount options help fit the switch into compact marine electrical spaces.
• Removable knob helps prevent unwanted operation during service work or while the boat is unattended.
• M10 terminals accept 3/8 inch cable lugs, with tin-plated copper terminals and hex nuts.
• Glass fiber reinforced nylon base and ISO8846 / SAE J1171 ignition protection for engine-room installations.
• Removable cable access window on all four sides helps route battery cable cleanly.

Installation and wiring

For full-current installations, use 120mm² (4/0 AWG) cable on the terminals and tighten the terminal hardware to 70 lbf-inch (8 N.m), with 12.5 N.m as the maximum. The terminals are M10, so confirm lug size, cable bend radius, and cover clearance before final mounting. The positive battery terminal should be disconnected before installation, and sensitive DC loads, alternators, and motors should be switched off before using the battery switch to disconnect the DC supply.

The enclosure measures 2.71 x 2.71 x 2.87 inch (69 x 69 x 73 mm) and weighs 0.4 lb (0.2 kg). For rear panel mounting, confirm the knob cutout and screw hole positions with the supplied mounting template before drilling.

Use on board

This switch fits vessels where the owner or installer wants a clear ON/OFF battery isolation point for the house bank, starter battery, inverter supply, alternator circuit, or a parallel connection between battery banks. It suits refits and new installs where the switch must be easy to reach, clearly labeled, and able to sit near higher-current DC cabling.

Operation and care

The knob turns clockwise for ON, counter clockwise for OFF, and then a further 30 degrees counter clockwise to the remove position. When the knob is removed, the switch remains off, which helps prevent accidental switching while work is being done around the batteries or DC panel.

What's included

• Battery switch
• Instruction booklet with mounting template
• Interchangeable label sticker sheet
• 4 mounting screws

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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