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HOME / PRODUCT CATEGORIES / POWER ACCESSORIES / SOLID STATE RELAY - 40A (3-32V DC INPUT)
Customer Reviews
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Solid State Relay - 40A (3-32V DC Input)
COM-13015
25
DESCRIPTION FEATURES DOCUMENTS
Trigger Current: 7.5mA/12V
Control Voltage: 24-380V AC
Input Voltage: 3-32V DC
Zero Cross
Solid State Relay - 40A (3-32V DC Input) Product Help and Resources
AC/DC?
last updated about 2 days ago
These solid state relays are controlled by a 3-32 DC signal on the input, but the output must be connected to AC. If you connect them to a load that’s
powered by DC current, you can turn the relay on, but you can not turn the load back off again without disconnecting power elsewhere from the load.
SUPPORT TIPS SKILLS NEEDED
COMMENTS 30 REVIEWS 25
4.6 out of 5
Based on 25 ratings:
2 of 2 found this helpful:
works great
about 4 years ago by Member #536848 verified purchaser
5 star 19
4 star 5
3 star 0
2 star 0
1 star 1
Currently viewing all customer reviews.
I have it driving two stove eyes in a homemade oven. It handles it with no problems and no heat even without a
heatsink
1 of 1 found this helpful:
Great SSR
about 3 years ago by Member #398708 verified purchaser
I’ve used this with 5V DC from Arduino to switch on/off a light at 240 VAC and (separately) an irrigation system
at around 30 VAC. I like the heat sink and plastic cover for safety. Also easy to wire up.
1 of 1 found this helpful:
I will be using these for all my AC voltage projects.
about 3 years ago by Member #339294 verified purchaser
I used an Arduino Nano with one of these to build a cycle timer. This unit is sturdy and built really well.
Mounting is easy and the terminals are full size so you can simply split right off the power cord very easily with
the peace of mind that the connections will remain solid.
3 of 3 found this helpful:
perfect for what I needed
about 3 years ago by Member #445373 verified purchaser
Picked up several of these when I was planning my home automation system. What I liked was that it was able
to work with the raspberry pi at 3.3v without a problem. a lot of the other relays i looked at needed 5v for input.
with this one I was able to connect it to a GPIO pin and when that pin went high the relay turned on. no muss
no fuss. I have sence switched to esp8266 modules and it works with them as well.
1 of 1 found this helpful:
works perfectly
about a year ago by Member #651047 verified purchaser
I originally bought another very similar SSR, also rated for 3~32VDC on the control side. However, it wouldn’t
actually activate from the 3.3v digital pins on my Arduino. It needed closer to 5v to activate. So, I ordered this
one. It worked perfectly as soon as I wired it up. Now I can digitally control my brewing mash temps! Hooray!
2 of 2 found this helpful:
Great
about 3 years ago by Member #377250 verified purchaser
This SSR is suitable to switch with out click sound and high power consumption product like heater, Thank you
5 of 5 found this helpful:
Simple and robust
about 3 years ago by Member #169074 verified purchaser
I’ve used a few of these with PID controllers to switch heating elements (in a sous vide cooker, and an
espresso machine, both 120 V AC) – it handles lots of AC current, silently; even with high loads, the SSR
doesn’t get very warm. My sous vide cooker is about 1200W, and when the full load is going through the SSR
as it initially brings things up to temp, it still isn’t hot to the touch. It’s easy to put a radiator on the back - there’s
a nice metal plate, just add a couple mounting screws and some thermal paste - but I haven’t needed to do so.
The input is easy to switch with an Arduino or other 5V microcontroller output, to control e.g. heaters, pumps,
lights.
The indicator LED is useful to check that the SSR is getting the control signal. The screw terminals work nicely
with either bare wire or spade connecters.
The one I have in my espresso machine is inside the machine’s case, and routinely sees 220 deg F; the heat
so far has not affected functionality at all. This is a robust device, at a good price.
1 of 2 found this helpful:
Easy to set up, and works
about 3 years ago by Member #700219 verified purchaser
Did not cause unnecessary troubles.
Have 2 running directly off an Arduino mega, works good
about a year ago by Member #735257 verified purchaser
Just make sure to have a DC power supply hooked up to the Arduino and it works great. If you try to run 2 off
the Arduino with only the USB it can’t quite power them. Been using it with 120v 60hz and now 50hz without
issues.
So far, so good
last year by Member #1111055 verified purchaser
We bought 35 pieces but haven’t had a chance yet to put them to work. However, your handling of our order
and shipping was 5 star!
Perfect fix!
last year by Member #1146265 verified purchaser
I needed an easy way to disconnect RV power after I had already climbed into my bunk. This unit combined
with a micro switch is a perfect solution!
Best relay ever
last year by Member #623360 verified purchaser
Very solid stuff ;)
Solid State Relay - 40 Amp
about 11 months ago by Member #1184351 verified purchaser
Everything worked out great
Works perfectly
about 5 months ago by Member #383813 verified purchaser
Bought this relay to control an espresso machine heating element. I was concerned about heat because I
mounted the relay inside he machine, but I have had no problems. I also really like the design and quality of
construction. Couldn’t ask for better.
Used with Arduino
about 4 months ago by Member #1373653 verified purchaser
Was able to switch mains AC power with an Arduino UNO using PWM. Worked perfectly for what I needed.
Solid State AC Relay 40 Amp
about a month ago by Member #1408276 verified purchaser
I have used the relay extensively for two weeks now and have had no issues. I am switching two legs of 240
volt AC for a well pump. I am using the relays so the pressure switch contacts will last longer. As I said, so far
so good. I have the relays mounted on a heat sink appropriate for 15 watt heat dissipation. For safety reasons,
remember almost all solid state relays have some leakage current when in the off state. The relays are a good
value and work well.
housings partly melted!
about 4 days ago by Member #871915 verified purchaser
Running two relays with only 11amps at 240V, these relays (2 of them) had the sides of the housing slightly
melted and literally burned black rectangles into the plywood piece they were bolted to. So whoever said you
don’t need a heat sink in the other reviews…think again! Buy a version with a brand name, like Omega and
follow their instructions, which say to use a sink. Or at least bolt them to an alum plate. If i could post a pic here
of the burnt wood and melted housings, I would.
CF replied on September 18, 2018:
Sorry to hear you’ve had trouble with the solid state relay. I don’t know who told you that a heatsink
wasn’t required, but they were incorrect. Any solid state relay that’s controlling more than a few watts
will need a heatsink.
Does the job
about 3 years ago by Member #677330 verified purchaser
Good price for this item!
Works every time with Particle Photon IOT
about 3 years ago by meljr verified purchaser
Our MakerSpace has a classroom where the only light switch is at the opposite end of the room from the entry.
As it would not be easy or inexpensive to re-wire the lighting and it is a MakerSpace, I decided to fabricate an
IOT solution using a pair of Particle Photons, this SSR and a NO push button. This relay works as advertised,
is completely silent and runs cool to the touch. The 3.3VDC output from the Photon activates the relay every
time and the Particle cloud is easy to use and monitor. For remote switching of non-trivial AC applications, this
relay can’t be beat.
Works great!
about 2 years ago by Member #795668 verified purchaser
I used this item to build a controller for my woodworking shop vacuum. Activates well with only 3vdc current,
and handles the large AC current fantastically
Perfect for my application at a reasonable price!
about 2 years ago by Member #811852 verified purchaser
Wired this into an outlet box to turn on outlets using the 12V trigger from my surround sound receiver. This way
my subwoofer would turn on and off with the receiver using a Crown Power Base 2 amplifier.
Nice SSR
about 2 years ago by Member #191965 verified purchaser
A nice solid state relay. Mind the leakage current, if that sort of thing matters to your project. I’ve hooked these
up to Raspberry PIs and ESP8266’s no problem.
Amazing relay, at a reasonable cost
about 2 years ago by Ian R. verified purchaser
Connecting it to an ESP8266, and a HDT22, I was easily able to make my own ‘Nest’ device to control the
power to my AC unit for about a year now.
It works well, and is silent. with the sealed design and high amperage capability, I am purchasing more of them
to add control over my baseboard heaters next!
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