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The Nilight Battery Disconnect Switch 100A Master Isolator is a rugged, IP65-rated rotary switch designed to safely disconnect 12-32V DC battery systems. With a continuous rating of 100 amps and a cranking surge capacity of 500 amps, it prevents battery drain in vehicles and marine applications. Its durable ABS housing and copper terminals ensure long-lasting performance, making it ideal for cars, boats, RVs, and off-road vehicles. Includes wiring diagram and a 2-year warranty for trusted protection.
| ASIN | B0CR5VJ7KB |
| Actuator Type | Rotary |
| Best Sellers Rank | #685 in Automotive ( See Top 100 in Automotive ) #2 in Automotive Replacement Battery Switches |
| Brand | Nilight |
| Brand Name | Nilight |
| Circuit Type | 1-way |
| Color | 1Pcs On-Off Switch 100A |
| Compatible Devices | cars, marine boats, RVs, campers, travel trailers, trucks, ATVs, UTVs, battery banks |
| Compatible with Vehicle Type | car, marine boats, RVs, campers, travel trailers, trucks, ATVs, UTVs |
| Connectivity Protocol | X-10 |
| Connector Type | Plug In |
| Contact Material | Copper |
| Contact Type | Normally Open |
| Control Method | Touch |
| Current Rating | 100 A |
| Customer Reviews | 4.0 out of 5 stars 154 Reviews |
| 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 |
| UPC | 840323914277 |
| Unit Count | 1 Count |
| Upper Temperature Rating | 1 °C |
| Wattage | 1200 watts |
S**N
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.
A**R
robust switch
easy install and durable for my 12v Project box
F**R
Disappointed
DO NOT USE FOR OUTDOOR APPLICATIONS!!! after about a year of use in a boat it stopped working. The boat lived under a cover when not in use. The switch stopped working properly and got progressively worse. I took it apart to see what was wrong and the contacts corroded heavily creating resistance. Very disappointed and it seems it is not even remotely sealed.
S**E
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.
B**N
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.
R**I
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!
F**S
Very small overall and undersized terminal posts for supposedly 100 amps
I'm disappointed with the quality of this. It feels small and cheap. The terminal posts seem very weak and it was hard to tighten the nuts without feeling like they were going to snap off. Plus they are very close together. Even using battery cable with 5/16 terminals they are about 1/8" apart. The switch also feels vague.
B**.
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!
C**.
Good quality switch
Seems solid and it works
Trustpilot
2 days ago
3 days ago