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⚡ Keep your brakes sharp and your ride smooth with precision vacuum control!
The 28146SW Brake Vacuum Switch is a high-stability, preset vacuum pressure switch designed for 12V electric brake booster pumps. It automatically toggles the pump on/off between 0.04 and 0.06 MPa, preventing pump overuse and extending its life. Compatible with multiple electric vacuum pumps including AC Delco and 79 Corvette models, it features a secure screw mount and glued adjustment screw for leak-free, reliable operation. Supported by a warranty and customer service, it’s a must-have for professional-grade brake system maintenance.
| ASIN | B08QMLQC4C |
| Best Sellers Rank | 207,001 in Automotive ( See Top 100 in Automotive ) 22 in Car Power Brake Systems |
| Brand | Semcto |
| Coil Voltage | 12 Volts |
| Connector Type | Screw Terminals |
| Contact Material | Silver |
| Contact Type | Normally Open |
| Customer Reviews | 3.5 3.5 out of 5 stars (158) |
| Manufacturer | Semcto |
| Manufacturer Part Number | 28146BP-002 |
| Maximum Switching Voltage | 12 Volts |
| Minimum Switching Voltage | 12 Volts |
| Model Number | 28146BP-002 |
| Mounting Type | Screw Mount |
| Number of Terminals | 2 |
| Operation Mode | Automatic |
| UPC | 709930351526 |
N**L
Strong
Yes
G**.
dont work.
did switching part kept tripping. no use whatso ever. ups return system hopeless tried 3 times and still no joy
J**E
Broken of no use
Broken item sent
M**S
A simple solution to lack of vac pump
Item arrived from Amazon U.S. to the UK in 5 days..👍 I've yet to road test it but it appears to work correctly on my car... I was initially confused by the wiring diagram which showed No1 on the relay to be a +. This is ofcourse not a +..... it is a - that comes from the top of the unit...but I think its worth a mention if anyone else spots it and gets confused.
T**S
I'm using this as a brake vacuum boost pump switch on a custom electric vehicle and it works perfectly. I saw other reviews mention that theirs chatters but mine doesn't chatter at all and works perfectly so far.
J**S
Excellent
L**C
Works well
L**S
This switch is terrible! Worked for about 5 minutes, it stopped working and would not turn the vacuum pump on, I found out when I when to push the pedal and had not brakes. Beware, this is a huge safety risk.
C**S
Bought 2 units, both chatter the pump and relay because they do NOT brake the earth circuit enough to close the relay, I got done! Please read reviews first!
Trustpilot
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