Nilight90015A Battery Switch 12-48V Waterproof Heavy Duty Battery Power Cut Master Switch Disconnect Isolator For Car Vehicle Rv And Marine Boat (On/Off),2 Years Warranty

Q: I would like to use this to cut the power on my winch when not it use. Does anyone know if this will handle the draw when the winch is in use?

Check your winches max current draw at it's max pull. Most 10k winches can go over 300-amps easy some over 350-amps. Always use switches, contact points and terminals that can handle more than your devices rated maximum current draw and max voltage, even if it's only 10% more. Don't size for nominal loads, size for max current and max voltage plus a safety factor. Wire charts (current to awg wire size) is a safe minimum size. If it says 4awg wire, go to 2awg. Copper is cheap and it will lower your circuits overall resistance and current draw while being safer. Do this and you wont get suprised the general wire chart that is probably written for a very spoecific type of wire strand size, jacket, etc. You can go down in fuse/breaker size, it will just blow/trip more often. You can go up one fuse size and, at this current level, that means only 10-amps more. So if your winch can draw a max of 300-amps, the largest fuse you should use is 310-amps. Momentary is very subjective. Without a quatitative number, size components for maximum current draw. Also, NEVER put a switch on a Negative, Common or Neutral wire.

Q: can this be used with 4/0 cable lugs

The switch doesn't care about the lug current capacity, just about physical characteristics of the lug, which unfortunately is not standardized. If the lug is bulky at its connecting area to the cable, some allowance might have to be made in mounting. The lug needs a fairly large hole opening where it connects to the switch, at least a 7/16 inch hole. The metal area around the hole opening of the lug can't be too large or it will short out to the connector on the other side of the switch, so some grinding of the lug's squareness might be necessary. Available thread on the switch terminals is more than adequate for a fairly thick lug.

Q: I bought this to hook up to my rv battery case. i assumed it would come with instructions. does anyone have a good website showing how to hook it up?

Really no need for instructions. I installed it in my camper, its purpose is to disrupt electrical connection. If you have one main power cable then connect from the battery to the switch and then main power to switch. If there's a bunch of connections to the power side and not sure then you can also install the switch on the negative side which usually goes to one chassis ground.

Q: Will the switch prevent auto theft

Only if the theft doesn’t know where the kill switch is. If it is placed in an accessible area they can still take vehicle.

4.7/5

معرّف المنتج: 256756392

معاملة آمنة

التفاصيل

Operation mode
ON-OFF
Current rating
455 Amps
Operating voltage
12 Volts
Contact type
Normally
Connector type
Screw terminal

💧Waterproof ABS housing

🔋275A continuous current

🔒Lockable on/off positions

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Nilight - 90015A Battery Switch 12-48V Waterproof Heavy Duty Battery Power Cut Master Switch Disconnect Isolator for Car Vehicle RV and Marine Boat (On/Off),2 Years Warranty

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الوصف

🔋 Cut the power, not the adventure – master your energy flow with confidence!

COMPLETE INSTALLATION KIT - Includes 4 heavy-duty bolts for quick, hassle-free mounting and setup.
POWERFUL CURRENT HANDLING - Supports 275A continuous and up to 1250A momentary current at 12V DC for demanding electrical systems.
SECURE ISOLATION CONTROL - On/off switch with lockable positions guarantees reliable power cut and system protection.
UNMATCHED HEAVY DUTY DURABILITY - ABS plastic housing with insulated rear cover ensures ultimate safety and longevity.
VERSATILE VOLTAGE COMPATIBILITY - Seamlessly operates across 12-48V DC systems, perfect for cars, RVs, boats, and more.

The Nilight90015A Battery Switch is a waterproof, heavy-duty power disconnect isolator designed for 12-48V DC systems. Built with durable ABS plastic and insulated terminals, it handles up to 275A continuous current and 1250A momentary surge, making it ideal for vehicles, marine boats, RVs, and battery banks. Featuring a secure on/off switch with lockable positions and including mounting bolts, it ensures safe, reliable power control backed by a 2-year warranty.