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The Nilight Battery Disconnect Switch is a heavy-duty, waterproof master isolator designed for 12-48V systems, delivering 100A continuous current and a 500A surge rating. Built with corrosion-resistant silver-plated copper terminals and durable ABS housing, it prevents battery drain during storage for vehicles, boats, and RVs. Featuring an easy panel mount installation and real-time LED voltage monitoring, it ensures reliable, long-lasting power management with a 2-year warranty.
| Actuator Type | Rotary |
| Asin | B0CR5VJ7KB |
| Best Sellers Rank | #449 in Automotive (See Top 100 in Automotive) #2 in Automotive Replacement Battery Switches |
| Brand Name | Nilight |
| Circuit Type | 1-way |
| Color | 1Pcs On-Off Switch 100A |
| Connectivity Protocol | X-10 |
| Connector Type | Plug In |
| Contact Material | Copper |
| Contact Type | Normally Open |
| Control Method | Touch |
| Current Rating | 100 A |
| Customer Reviews | 4.1 4.1 out of 5 stars (148) 4.1 out of 5 stars |
| Included Components | 100A Battery Disconnect Switch with a wiring diagram |
| International Protection Rating | IP65 |
| Item Dimensions | 1 x 1 x 1 inches |
| Lower Temperature Rating | 1 °C |
| Manufacturer | Nilight |
| Material Type | Copper, Plastic |
| Model | 90328A |
| Mounting Type | Panel Mount |
| Number Of Items | 1 |
| Number Of Positions | 1 |
| Operating Voltage | 12 volts_of_direct_current |
| Operation Mode | ON-OFF |
| Part Number | 90328A |
| Specification Met | 1 |
| Switch Type | Kill Switch |
| Terminal | Screw |
| Unit Count | 1 Count |
| Upc | 840323914277 |
| Upper Temperature Rating | 1 °C |
| Wattage | 1200 watts |
User
Hole Size Explained
Looks and works great. I was working with 6 awg wire which the crimped eyelet connector fit great. I have a ressetable 40amp breaker between this shutoff and the battery. Good smooth switch action and I like the size for my Dash Panel on a deck boat. I wish vendors would show the hole cutout. I measured 1.125 (1-1/8") diameter on the threads and 1.0625 (1-1/16") on the flats. Flats are vertical so I am going for either a simple 1.1875 (1-3/16") hole or 3d printed plate that has a 1.1875 (1-3/16") diameter hole and 1.125 (1-1/8") on the flats.
User
No more dead battery
Fixed a slow drain on my battery. I placed it on the inside of my old truck to make it easier to turn off and on without going under the hood. Also, be aware this will stop all power from the battery. You may lose you radio presets when using this. I did, but it's an older truck.
User
Bad quality
Does not work and bolt stripped super easily. Just bad quality all around. Too bad, because I like the form factor.
User
Much smaller than other disconnects.
Works correctly, switch itself doesn't feel really solid but it does work. I wanted this smaller size to install on the dash of my boat so it doesn't stick out so much. The nut on the back that is meant to hold it in place is basically worthless though. I used clear silicone to help hold it better.
User
Work great.
Drilled a hole through the chassis on my camper so these mount flush, and it keeps the road debris off the contacts.
User
Nice 100 Amp switch
Installed it on a Generac iq3500 to eliminate battery draw
User
Reliable so far
This switch saved the trip in Seattle. I used it to replace a shutoff switch that went bad en route to Seattle. Thankfully we had ordered it and dropped at a locker. I was able to replace the faulty one and it's still working great!
User
As described - So far, so good!
Installed on a 2001 Chevy Silverado 1500 truck to solve a slow power leak problem. Easy install... and it has been working like a charm!
User
Good quality switch
Seems solid and it works
Trustpilot
1 month ago
3 weeks ago