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⚡ Power up your projects with silent, seamless switching!
The SSR-40DA is a high-performance solid state relay designed for professional-grade temperature and power control. Supporting up to 40A load current and a broad AC output range (24-380V), it features a low-voltage DC input (3-32V) for precise switching. Its integrated heat sink and rugged design ensure durability and silent operation, making it ideal for industrial automation, HVAC systems, and advanced home theater setups.














| ASIN | B09NR5KN8P |
| Best Sellers Rank | #19,282 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #4 in Solid State Relays |
| Brand | Coliao |
| Brand Name | Coliao |
| Coil Voltage | 32 Volts (DC) |
| Connector Type | Screw |
| Contact Current Rating | 40 Amps |
| Contact Material | Silver |
| Contact Type | Normally Open |
| Current Rating | 40 Amps |
| Customer Reviews | 4.6 out of 5 stars 24 Reviews |
| Manufacturer | Coliao |
| Maximum Switching Current | 40 Amps |
| Model | Coliao-SSR-40DA |
| Mounting Type | bolt-mounted |
| Operation Mode | Electric |
| Part Number | Coliao-SSR-40DA |
| UPC | 701715495739 |
S**L
Works great to trigger my power amps from my stereo receiver
I recently purchase a new high-end receiver for my new theater room. My older receiver had a 110v switched outlet that I used to turn on a 110v relay which turned on my power amps. My new receiver doesn’t have a 110v switched outlet, instead it has a 12v assignable trigger output. So I purchased this SSR to trigger on from my stereo and power on my amps. It has worked great for the month or so since I connected it. Silent compared to my old large relay, and doesn’t “stick” on like my relay did occasionally due to the arcing of the contacts.
L**.
Relay with heat sink.
Having the relay and heat sink come together helps in designing projects. The relay works well in distributing power in electronics.
C**T
It doesn't include screws or thermal paste.
I find it rather annoying they don't include the things needed to actually use this. The mounting screws for the heat sink are not included, and it should have some thermal paste/pad under the SSR. The screws I'll have to figure out what thread they have and go buy a package at ripoff store prices. They should be included. Otherwise they appears to be good. I have not tested the SSRs yet.
K**J
Works for a short period of time
Bought the 25 amp relay, they malfunctioned shortly after. Tried the 40 amp relays, which lasted a few months before one melted in half. Buy a better product.
Trustpilot
3 days ago
3 weeks ago