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🔋 Cut the power, not the thrill — master your ride with Fastronix!
The Fastronix 3/8" 2-Position Master Battery Disconnect Switch is a high-performance, aluminum rotary switch rated for 180A continuous and 1000A intermittent current. Designed for cars, motorhomes, and NHRA-compliant race vehicles, it offers a secure panel mount in a 3/4" hole with IP54 protection against dust and water. Its durable build and precise operation eliminate parasitic battery drain, making it an essential upgrade for professionals and enthusiasts who demand reliability and control.
| ASIN | B011EYWMDS |
| Actuator Type | Rotary |
| Brand | Fastronix Solutions |
| Circuit Type | 1-way |
| Colour | Aluminum |
| Compatible with Vehicle Type | Cars, Motorhomes, Other Vehicles |
| Connectivity Protocol | X-10 |
| Connector Type | Screw Terminals |
| Connector type | Screw Terminals |
| Contact Material | Aluminium |
| Contact Type | Normally Open |
| Contact type | Normally Open |
| Control Method | Remote |
| Current Rating | 180 Amps |
| Current rating | 180 Amps |
| Customer Reviews | 4.7 out of 5 stars 1,292 Reviews |
| International Protection Rating | IP54 |
| Item Weight | 100 g |
| Manufacturer | Fastronix Solutions |
| Manufacturer Part Number | 303-001 |
| Material | Aluminium |
| Model Number | 303-001 |
| Mounting Type | Panel Mount |
| Number of Items | 1 |
| Number of Positions | 2 |
| Operating Voltage | 12 Volts |
| Operating voltage | 12 Volts |
| Operation Mode | ON-OFF |
| Operation mode | ON-OFF |
| Specification Met | NHRA, SCCA, IP54 |
| Switch Type | Rotary |
| Terminal | Screw |
| UPC | 638037089455 |
| Unit Count | 1.0 count |
| Wattage | 2160 watts |
W**R
Good Solid Switch
I was looking for a battery cut off switch for my trailer that would be accessible on the outside of my battery box. I didn't want the style that had a removable key, and I wanted one that would be durable. I also didn't want to spend a small fortune on it. This one fit the ticket. It was a little larger than I thought it would be, and I had to change the side of my battery box that I had originally planned on having it attached. It protrudes inside the box by several inches, and it would have hit my battery. I like this switch. It has a nice solid construction, metal instead of plastic. There is a definitive "click" when you switch it on. Now I don't have any parasitic drain on the batteries while in storage, and I can turn off the power even if my battery box is locked. The threaded shank of the switch is flat on two sides so you can get a wrench on it. I decided to drill the hole for it slightly smaller than the shank and then use a file to shape the opening to match the shank. This way when you tighten the nuts down, the switch won't rotate in the opening. I used a dab of RTV silicone behind the outside plate to prevent water getting in the box. I have had this setup for a year now and have had no problems with the switch, or water getting in the box.
B**R
Sturdily built. Works reliably
As in the title, this is sturdily built and works reliably. I think it should have come with a mounting plate for the high price.
A**M
Exactamente cómo está anunciado
Buena calidad
P**L
Good Quality, Nice Kit
I'm glad I ordered the kit that included heat shrink, ring terminals, and the rubber boots. I am using this switch as a power shutoff for the winch on the front of my truck (some of the other reviewers mentioned they are using it this way as well). I installed it today and cycled it about a dozen times while actuating the winch to make sure it works. Hopefully it will hold up and keep working for a long time. If I haven't updated this review from 5 Stars to less, than you can assume that mine is still working as it is supposed to.
S**T
Switch mount
Switch mount is solid but comes separate.
Trustpilot
1 month ago
2 months ago