{"product_id":"qbp874126","title":"Victron Energy Battery Switch ON\/OFF, 275A, 48V, ISO8846, Surface or Panel Mount","description":"\u003ch6\u003eOverview\u003c\/h6\u003e\u003cp\u003eThe 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.\u003c\/p\u003e\u003cp\u003eThe 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.\u003c\/p\u003e\u003ch6\u003eKey features\u003c\/h6\u003e\u003cul\u003e\n\u003cli\u003e275A continuous DC current rating, with 455A for 5 minutes and 1250A cranking capacity for 10 seconds.\u003c\/li\u003e\n\u003cli\u003eWorks with battery systems up to 48V and a maximum DC operating voltage of 60V.\u003c\/li\u003e\n\u003cli\u003eSurface mount or rear panel mount options help fit the switch into compact marine electrical spaces.\u003c\/li\u003e\n\u003cli\u003eRemovable knob helps prevent unwanted operation during service work or while the boat is unattended.\u003c\/li\u003e\n\u003cli\u003eM10 terminals accept 3\/8 inch cable lugs, with tin-plated copper terminals and hex nuts.\u003c\/li\u003e\n\u003cli\u003eGlass fiber reinforced nylon base and ISO8846 \/ SAE J1171 ignition protection for engine-room installations.\u003c\/li\u003e\n\u003cli\u003eRemovable cable access window on all four sides helps route battery cable cleanly.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch6\u003eInstallation and wiring\u003c\/h6\u003e\u003cp\u003eFor 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.\u003c\/p\u003e\u003cp\u003eThe 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.\u003c\/p\u003e\u003ch6\u003eUse on board\u003c\/h6\u003e\u003cp\u003eThis 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.\u003c\/p\u003e\u003ch6\u003eOperation and care\u003c\/h6\u003e\u003cp\u003eThe 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.\u003c\/p\u003e\u003ch6\u003eWhat's included\u003c\/h6\u003e\u003cul\u003e\n\u003cli\u003eBattery switch\u003c\/li\u003e\n\u003cli\u003eInstruction booklet with mounting template\u003c\/li\u003e\n\u003cli\u003eInterchangeable label sticker sheet\u003c\/li\u003e\n\u003cli\u003e4 mounting screws\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Victron Energy","offers":[{"title":"Default Title","offer_id":52023459152053,"sku":"QBP874126","price":34.85,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0977\/8171\/1029\/files\/1332137_qbp874126.jpg?v=1780191818","url":"https:\/\/www.qualityboatparts.com\/products\/qbp874126","provider":"Quality Boat Parts","version":"1.0","type":"link"}