

⚡ Elevate your control game with silent, powerful switching!
The SSR-40DA is a robust solid state relay designed for professional-grade temperature control and automation. It supports a 3-32V DC input and switches up to 40A at 24-380V AC output, ensuring reliable, spark-free operation in harsh environments. Equipped with a heat sink and corrosion-resistant build, it’s ideal for industrial thermostats and PID controllers requiring silent, high-speed switching.














| ASIN | B09NR5KN8P |
| Best Sellers Rank | #29,091 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #6 in Solid State Relays |
| Brand | 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 |
| Date First Available | December 17, 2021 |
| Item Weight | 5.6 ounces |
| Item model number | Coliao-SSR-40DA |
| Manufacturer | Coliao |
| Maximum Switching Current | 40 Amps |
| Mounting Type | bolt-mounted |
| Operation Mode | Electric |
| Package Dimensions | 4.76 x 3.43 x 2.36 inches |
| UPC | 701715495739 |
J**.
Solid state relay
SimplenSolid state relay, worked great . Replaced old mechanical relay
B**R
Works as Described
Purchased to make external HDD light for my PC. Works exactly as I hoped.
A**R
Industrial controls lab
Used for teaching. Worked great.
Y**A
SSR-40AA does the job, but the heat sink is extremely hot
It (SSR-40AA) works, but, first of all, you need to find somewhere 2 small metric machine screws M4x0.7 since the relay comes separated from the heat sink and no screw in the package; second of all, the heat sink is extremely hot (like my iron) on 25 Amps, I cannot imagine what will happen on 40 Amps.
M**S
Good Solid State Relays
As advertised!
M**M
Know what your doing
Works ok just check ur voltage know what your doing
J**N
10amp SSR - working great!
Working like a champ! Very reliable so far.
P**T
Good for custom (new) 120v installations
It is Working for a Slide-in Pick UP truck Camper 120VAC installation. Installed under the sink in,cabinet space for an 120v AC Outlet (above Kitchen countertop) & 8 amp Breaker Light switch (for bug zapper Bulb)…
Trustpilot
2 weeks ago
2 months ago