Parts/Radio & control/Switches & power distribution/ProTek RC Electronic Switch w/Voltage Cutoff
ProTek RC Electronic Switch w/Voltage Cutoff
ProTek RC

ProTek RC Electronic Switch w/Voltage Cutoff

Part # PTK-40603.6(15)
Where to buy
$29.99
AMain Hobbies
Seen Oct 12, 2026
$29.99Buy
Prices are as last seen at the store; stock is not tracked.

About this part

This is the ProTek R/C Electronic Switch. The ProTek R/C Electronic Switch is a lightweight and compact MCU controlled digital ON/OFF switch for your radio controlled model. With the push of a button this digital electronic switch eliminates the problems with intermittent contact associated with mechanical switches. This ProTek R/C Electronic Switch can be easily mounted to the transponder mount of your model or any other suitable location using double-sided tape (optional bottom covers are included).

The ProTek R/C Electronic Switch includes a LiPo mode that when selected, will auto-detect low LiPo voltage and will cut-off power from your LiPo battery to prevent over discharging. LiPo mode can be turned off if other safeguards are in place or you are using a NiMH or NiCd battery. The ProTek R/C Electronic Switch also monitors the remaining capacity and condition of the battery pack, and indicates the status with the use of LED's.

View Manual Icon small Warranty Info Icon small

Features:

  • Digitally MCU Controlled Unit
  • Supports Multiple Battery Types
  • Integrated LiPo Safety Mode 
  • LED Battery Status Indication
  • Small and Lightweight Design 
  • Additional Bottom Cases Included

Model PTK-4060
Input Voltage
4-12V     
Max. Current
10A
Battery Mode
1. NiHM/NiCD; 2. LiPo
Low Voltage Protection
6.2V (LiPo Mode Only)
Operational Temperature
32-122°F (0-50°C)
Weight Approx. 7g

ProTek R/C is an AMain Sports & Hobbies brand.

CA Residents Prop 65 Warning WARNING: This product can expose you to chemicals including Di(2-ethylhexyl)phthalate (DEHP), which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov Details...

Reviews3.6 · 15 reviews

Anonymouson ProTek RC Electronic Switch w/Voltage Cutoff

The switch is awesome. Been racing with two of them of both vehicles for over a year. Work like new. Zero issues. This review is purely to complain to Amain about the absurd up charge on this product. I got mine for 16 bucks each at vp pro usa. Protek product are good sometimes. But my god a 250% markup? Wtf

14 found this helpful
michael sanchezVerified owneron ProTek RC Electronic Switch w/Voltage Cutoff

Ok I tried it ! Maybe it's just me or the choices I have made with switches ( on and off buttons ) on ALL of my RC's ! This one didn't last a day of practice ! Running this in a Losi 3.0 with Dyn lipo ! All of a sudden just cutt off - fully charged lipo - all connections brand new. There is NO WAY to run a product that you do not have the confidence in, when you are using when it comes time for the Amain event ! I do not recommend this product or endorse this product! No way to say it was a bad batch because when you buy something you expect it to work flawlessly the first time with out having to work out the BUGS or batch number supplied with it ! Again a day or practice and didn't last ! I do not recommend this product ! Not looking for a refund or store credit - just a product I can rely on !

9 found this helpful
KurtVerified owneron ProTek RC Electronic Switch w/Voltage Cutoff

While the description speaks to the advantage of electrical connection vs. the potential for intermittent mechanical failures, what it does not present is the potential for electrical circuit board issues. I purchased two of these electrical switches in November 2018. My first one lasted from Dec 18 to Feb 20. It worked great. I kept my second one as a backup. Over time, the nylon button cover deteriorated. A couple of weeks ago, the green 'power' light would not go out after turning off the switch. Then during my most recent race, my nitro buggy had a runaway which I thought was caused by my receiver battery since it was low voltage. But just to be safe, and since I had that weird green power light staying on at all times, I changed out the switch to my other one that I'd bought as a spare. When installing it, the switch seemed fine - no more green power light when turning it off. It seemed to function properly. However, this past weekend during a race, with my new spare switch installed, and a newly charged receiver battery (a different one that previous) on the same old switch, I thought it odd that the power button displayed an amber light (meaning battery level sensed as low). I checked using two separate battery meters and the 7.4v Protek receiver battery was indeed at max capacity. So, I went ahead and raced. My receiver batteries typically last all day when fully charged (two years worth of data to support it). I ran two 5 minute qualifiers, and then during my A-main right before the race started (I was in 1st place and had TQ’d), it seemed like my buggy flamed out on the pipe as my pitman was holding it because I was giving full throttle but nothing happened. However, when I was signaling to my pitman to put the buggy on the bump box to restart it he kept looking at me in confusion. I realized after this ordeal that this was because the buggy was still idling…only the receiver switch had started to malfunction and not register some of my inputs. Then, about 5 minutes into my A-Main, my buggy started cutting in and out with steering and throttle response before it got stuck at wide-open throttle and became a runaway. Luckily after pulling hard on the brake trigger multiple times, the input registered and the throttle went back to normal. A second runaway with my second electric switch. The moral of the story is I personally do not think that these switches are any more reliable than mechanical ones. I think I’m going to go back to mechanical.

4 found this helpful
Austin Blairon ProTek RC Electronic Switch w/Voltage Cutoff

This switch is awesome!It has a lipo cut off. Plus it even shows you how much power is left in the battery! Super compact as well.

2 found this helpful
AnonymousVerified owneron ProTek RC Electronic Switch w/Voltage Cutoff

This is an excellent switch. When I first held it in my hand I was not all that impressed for the price, but now that I have it installed I really like it. It's great to be able to see the charge of the lipo receiver battery at a glance and its much smoother to operate than a mechanical switch. I mounted mine to the transponder mount. I used two layers of foam tape underneath and screwed it down but not all the way to accommodate the tape (leaving 1-2mm). Hopefully the cushion will make this thing last! One star off for value - as good as it is, this switch ain't worth $40. I just finished my NT48.3 build and had to have one quick so I couldn't wait for them to go on sale, but if you are not in a hurry you should shop around. These things can't be much more than a few bucks to make and their mark up is unreal.

1 found this helpful
What reviewers say

Reviewers largely praise the switch's reliability and features, including lipo voltage cutoff, a battery-level display, compact size, and smooth operation. Several long-term owners report years of trouble-free use. Criticism centres on price, with multiple reviewers calling it expensive relative to similar switches. A recurring problem is failure: some units cut out during use, one reviewer reported a unit smoking and burning, and another described an intermittent beeping and auto-shutdown fault. One owner reported circuit board concerns and a runaway, and another attributed burned switches to a higher-voltage 155T battery pairing, with 170s working. Some owners recommend cushioned mounting to prevent case cracking. One reviewer requested a version rated for higher amperage. Several reviews do not specify issues, and some discuss the pricing or vendor rather than the product itself.

  • + Lipo voltage cutoff
  • + Shows remaining battery charge
  • + Compact and smooth to operate
  • + Long-term reliability for some owners
  • − High price relative to alternatives
  • − Some units failed or burned out
  • − Intermittent shutdown or beeping reported
  • − Case cracking without cushioned mounting
Summary generated from the reviews above.

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