Is this supposed to disconnect 100% of the current? Because mine doesnt

Yes. This switch cuts the load leg completely. If you are having draw issues, or you are showing power at one or both of the switch poles, I would disconnect both legs of the switch and test both cables for any power. If your vehicle/equipment has multiple features, it may be that you are getting power back-fed from the load/equipment/vehicle via a different power source.

I’m looking to easily connect and reconnect my negative battery cable. Will this work? I have a 250 amp alternator

I currently am running about 2 dozen of these as master battery disconnects on a fleet of mixer trucks. We are running 3 group 31 batteries through them, while cranking it sees in excess of 1500cca (for a few seconds) and they have performed nearly flawlessly. We use 160 amp alternators and at this point have only had one failure. Flaming River states on their website that it is rated for 250 amps continuous and 2500 amps for 5 seconds. I have tried quite a few others and these are the best ones I have found so far. Hope this helps, Good Luck.

When you turn the switch to the ON position, what happens when you let go? Does it stay in that position, or spring back to “off”?

Yes it will stay in lock position. And it works great. Sandman

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Flaming River FR1044 Battery Disconnect/BigSwitch with Lock-Out XL

Flaming River FR1044 Battery Disconnect/BigSwitch with Lock-Out XL

Product ID: 54900180

Details

Brand
Flaming River
Circuit Type
2-way
Connector Type
Screw
Contact Type
Normally Open
Current Rating
250 Amps
Item dimensions L x W x H
8 x 7 x 8

⚡250A continuous power

💧IP65 waterproof sealed

🔒Lock-out safety feature

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Description

🔋 Power up with confidence — the Big Switch that never quits!

LOCK OUT XL SECURITY - Manual lock-out feature guarantees safety and peace of mind during maintenance
VERSATILE COMPATIBILITY - Perfect for trucks, off-road vehicles, and industrial systems operating at 12V/24V
WEATHERPROOF DURABILITY - Fully sealed IP65 design to conquer rain, mud, and dust without fail
UNMATCHED POWER HANDLING - Handles 250 Amps continuous & 2500 Amps surge for heavy-duty reliability
PREMIUM SILVER PLATED CONTACTS - Ensures superior conductivity and corrosion resistance for long-term performance

The Flaming River FR1044 Big Switch is a heavy-duty, manual battery disconnect switch rated for 250 Amps continuous and 2500 Amps surge at 12V/24V. Featuring silver-plated contacts and a fully sealed IP65 waterproof design, it withstands harsh environments while providing a secure lock-out function for safety. Ideal for trucks, off-road, and industrial vehicles, it ensures reliable power control and protection.

Specifications

ASIN	B0130WZON2
Actuator Type	Manual
Best Sellers Rank	#117,666 in Automotive ( See Top 100 in Automotive ) #185 in Automotive Replacement Battery Switches
Brand Name	Flaming River
Circuit Type	2-way
Color	silver
Compatible Devices	Automotive and industrial electrical systems, devices operating within 12V/24V and 250A/2500A (5 seconds) ratings
Compatible with Vehicle Type	Truck, Heavy Machinery, Off-road Vehicles
Connectivity Protocol	X-10
Connector Type	Screw Terminals
Contact Material	Nickel-plated Brass
Contact Type	Normally Open
Control Method	Touch
Control Type	Manual
Current Rating	250 Amps
Customer Reviews	4.7 4.7 out of 5 stars (195)
Included Components	Flaming River Products
International Protection Rating	IP54
Item Dimensions	8 x 7 x 8 inches
Item Type Name	Battery Disconnect/BigSwitch with Lock-Out XL
Item Weight	0.1 Pounds
Manufacturer	Flaming River
Model	FR1044
Mounting Type	Panel Mount
Number of Items	1
Number of Positions	2
Operating Voltage	24 Volts
Operation Mode	Electronic,Battery
Part Number	FR1044
Specification Met	Operating Temperature: -40°c to +80°c / -40°f to +176°f; Environmental Protection: Ip65
Switch Type	Toggle
Terminal	Screw
Unit Count	1.0 Count
Upper Temperature Rating	80 Degrees Celsius
Wattage	6000 watts

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145956CFA

Duties & taxes included

In stock

Sold byAmazon SenegalDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Senegal.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

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