HeschenSingle Phase DC/AC Solid State Relay, SSR-40DA, Input 4-32VDC, Output 24-480VAC, 40A 50-60Hz (1)

Appears to work fine, the relay was activated with a voltage between 2.5-5v DC, though it's obviously rated much higher.Only used it to switch 220v at 3A AC, can't comment on higher currents but it seems well built and works as advertised

Needed a relay to handle 130vdc switching for my electric car conversion triggered from 12vdc supply, this works brilliantly. So far working really well, am considering replacing other high load mechanical relays with similar SSR’s, will update later when used for a while to give overall feedback.

I would seriously think twice about buying this cheap SSR, I had this installed in my 3d printer thinking it was working fine drove me mad trying to diagnose problem figured out eventually SSR was faulty and not doing its job although indicator light lit up making me think it was working fine, I'm pretty sure people who are rating this as a 4/5 star don't even know this is not working as the job for this SSR is to protect your rig from shorting, I think what this SSR does is allow current to run through but somewhere its not protecting the way it should and sends off all sorts of errors in some cases I can't put my finger on it as I'm not an engineer in this field, I basically ending up buying a premium SSR which worked straight away and got rid of all my headaches, I would look for a better alternative or if you can spend a bit more get a reliable/quality product.

If you intend to use this device as a replacement for old style mechanical switch relays be aware that this device has a leakage when in the off state, so you can't rely on it as a total safety isolation device. Having said that, for motor control the application I am using it in it's fine, does the job and is easy to interface to driver electronics.

Used on my 3D printer and stays at low temperature, unlike others I have used. It says 24 volt min but I use it at 12 volt.

Perfect replacement for my solid state relay in the cr10s pro 3d printer. Direct replacement.

Amazed the quality and the price so mutch. Cant say China just only make things to quantity.

I took delivery of two. Both were being used at 110V DC, switching 20A. (well within ratings).The first one was just closed circuit (the power switching inputs shorted). The indicator didn't light and it destroyed the driver circuit. It turned out all four screw terminals were shorted to the heatsink.Re-build driver (with fuses) and tried the second one. At first it appeared to work - the indicator turned on and the switching circuit closed. Unfortunately when the driver tried to turn it off, it literally blew itself to bits!The metal plate on the back detached with half the transistor attached. Smoke coming out of the other bit.I've since replaced them with a pair of Futek SSR-40DD SSRs which work just fine.