TWTADE SSR-40 DD 40A DC 3-32V to DC 5-60V SSR Solid State Relay + Heat Sink

Fit no problem to the inside of a light fixture, triggerd by a 15amp wireless switch. Prior switch failed within a few months, this should last forever... update. Lasted maybe a few months. Physicly burnt inside. I was using it to control about 12 amps of florescent lights it burnt out quick and stayed on. Not good. Anyway no where near 40 amps lol

works well for my ebike. cuts power even with a small signal

I am using these as part of an alternating sump pump controller for my basement. I wanted something that would switch quietly as the normal sump pump switch was quite noisy when it turned on and off as well as have some piece of mind knowing my pump will have a backup system. I have had similar that are in use now, but not available and have them in service now for 4.5 years. They are working better than expected.The pumps short cycle as the sump is too small. They handle the short cycle time with no issue. I use a cooling fan to blow across the heat sinks for added cooling.As other people have mentioned, it does not come with heat sink compound which is a must for these to dissipate the heat properly. I used ARCTIC MX-4 and does the job.I am using these to control 1/2 hp sump pumps.

Was running this to control power to my hot tub pump, triggered by my temp controller. The other day the pump stopped working, and when I popped the cover, found this nightmare fuel. The switched power is 110VAC coming off a 20A double protected GFI outlet so it is physically impossible that this came anywhere close to the claimed 40A limit. I count myself lucky that my house didn't burn down... I DO NOT RECOMMEND

I used this to control a shop vac for my CNC router. works fine with 5 volt DC control signal.

I'm using two of these to control a 110v 1300watt heating pad that draws around 11amps and a 110v 550watt 5amp 635cfm exhaust fan. I havent ran the heating pad yet, but the fan does great. I have the heatsinks cooled by a 24v fan and 150c thermal fuses fixed to both of them in case they fail. If I ever have any issues, I'll report back with updates.Edit: I guess I should mention I'm triggering them with 24v DC off of a PSU. Low voltage side is negative from the SSR to the negative on the PSU and positive from the PSU to a switch to the SSR. 110v side interrupts the LINE wire for the exhaust fan.

I bought a couple of these to switch DC power for a garden pressure pump which I put on a timer circuit for a drip irrigation system. 1 year+ later, working great, no issues.

When all is said and done, I am, at least, able to get this to work. With just the main load attached, 35w at 120VAC, activating the relay does not start the load. If the load is then unplugged and plugged back in, then it will start. The intent of using this relay was to avoid having to do this so that is a fail. I did find that if I add more load to the output, a 7.5 watt light, then it does work. In communicating with the seller, they were unable to provide any detail about a better solution other than just returning the relay.