{"product_id":"qbp240897","title":"Hella Marine Battery Master Switch, Removable Key, IPX4, M10 Terminals","description":"\u003ch6\u003eOverview\u003c\/h6\u003e\u003cp\u003eThe Hella Marine 100\/150 Amp Battery Master Switch is a keyed ON\/OFF disconnect switch used to isolate a battery bank or other high-current feed on board.\u003c\/p\u003e\u003cp\u003eIt installs in either the positive or negative main lead and connects via M10 screw terminals for heavy-gauge ring lugs. The housing is rated IPX4 for splash exposure, which fits sheltered mounting spots where the switch is not taking direct washdowns.\u003c\/p\u003e\u003cp\u003eContinuous rating depends on the configuration (100A or 150A). Short-duration cranking capability is specified for high inrush loads (10 seconds), up to 5000A at 12V or 2500A at 24V on some versions, and up to 1000A at 12V or 500A at 24V on others.\u003c\/p\u003e\u003ch6\u003eKey features\u003c\/h6\u003e\u003cul\u003e\n\u003cli\u003eKeyed ON\/OFF disconnect for a single battery circuit or high-current feed\u003c\/li\u003e\n\u003cli\u003eKey can be removed in the OFF position, with the circuit open, to prevent unintended energizing\u003c\/li\u003e\n\u003cli\u003eSuitable for switching either the positive or negative main lead\u003c\/li\u003e\n\u003cli\u003eM10 screw terminals for common marine battery-cable lugs\u003c\/li\u003e\n\u003cli\u003eIPX4 splash protection for protected on-board locations\u003c\/li\u003e\n\u003cli\u003eAvailable in 100A and 150A continuous ratings depending on configuration\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch6\u003eVariants\u003c\/h6\u003e\u003cp\u003eThis switch family is offered in multiple configurations. The part number identifies the continuous current rating and the voltage range listed for that version.\u003c\/p\u003e\u003cp\u003eThese versions share the same keyed ON\/OFF style and M10 terminal connection, so the main differences are the electrical ratings shown below.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e002843011: Amperage 100 Amps, Voltage 24V DC. Listed for 24V DC systems where a keyed main disconnect is required.\u003c\/li\u003e\n\u003cli\u003e001559001: Amperage 100 Amps, Voltage 10-30V DC. The 10-30V DC range covers common 12V and 24V battery systems.\u003c\/li\u003e\n\u003cli\u003e002843051: Amperage 150 Amps, Voltage 10-30V DC. Higher continuous current rating for circuits carrying heavier loads within a 12V or 24V system.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch6\u003eInstallation and setup\u003c\/h6\u003e\u003cp\u003eMount the switch where it can be reached quickly and where the rear terminals stay protected from loose gear, dripping water, and accidental contact. Leave room for cable bends and for removing the key.\u003c\/p\u003e\u003cp\u003eUse ring lugs sized for M10 studs and support the cables so vibration is not carried by the terminals. After wiring, confirm that OFF fully isolates the intended circuit and that the key only comes out with the switch open.\u003c\/p\u003e\u003ch6\u003eCompatibility and fit\u003c\/h6\u003e\u003cp\u003eThis is a single-circuit battery master switch, so it disconnects one circuit at a time. Boats with separate start and house banks commonly use one switch per bank, or one per major feed that needs isolation.\u003c\/p\u003e\u003cp\u003eMatch the continuous amp rating to the expected draw on that circuit, and plan the mounting location around the IPX4 splash rating, with added shielding if the area sees direct spray.\u003c\/p\u003e\u003ch6\u003eUse on board\u003c\/h6\u003e\u003cp\u003eCommon installs include a main house-bank disconnect near the batteries, a starting circuit shutoff, or a dedicated feed for a windlass or other high-current accessory that you want isolated during storage or service.\u003c\/p\u003e\u003cp\u003eThis is a good fit for boats that want a simple keyed shutoff without multi-bank selection functions.\u003c\/p\u003e","brand":"Hella Marine","offers":[{"title":"100 Amps \/ 24V DC","offer_id":52270685978805,"sku":"QBP240897-V1","price":43.48,"currency_code":"USD","in_stock":true},{"title":"100 Amps \/ 10-30V DC","offer_id":52270686011573,"sku":"QBP240897-V2","price":104.0,"currency_code":"USD","in_stock":true},{"title":"150 Amps \/ 10-30V DC","offer_id":52270686044341,"sku":"QBP240897-V3","price":29.78,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0977\/8171\/1029\/files\/1303463_qbp240897.webp?v=1771550393","url":"https:\/\/www.qualityboatparts.com\/products\/qbp240897","provider":"Quality Boat Parts","version":"1.0","type":"link"}