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Description
SSR-40DA DC to AC Solid State Relay - 2 PackSSR 40DA Solid State Relay Key Features Model: SSR 40DA Control Method: DC to AC Input Voltage: 3 32V DC Load Voltage: 24 380V AC Load Current: 40A Switching Mechanism: Electronic, no mechanical parts Trigger Type: Zero cross Connections: 4 screw terminals for input and output Replaces Cross Reference Part Numbers SSR 40DA Compatibility & Fitment General purpose component for controlling high current AC loads with a low voltage DC signal. Suitable for
SSR-40DA Solid State Relay
Key Features
- Model: SSR-40DA
- Control Method: DC to AC
- Input Voltage: 3-32V DC
- Load Voltage: 24-380V AC
- Load Current: 40A
- Switching Mechanism: Electronic, no mechanical parts
- Trigger Type: Zero-cross
- Connections: 4 screw terminals for input and output
Replaces / Cross-Reference Part Numbers
- SSR-40DA
Compatibility & Fitment
- General-purpose component for controlling high-current AC loads with a low-voltage DC signal.
- Suitable for automatic control systems, including temperature controllers, HVAC systems, and industrial machinery.
When to Replace
- Relay fails to activate when input voltage is applied.
- Relay remains stuck in the "ON" position, even with no input voltage.
- Intermittent or unreliable switching of the AC load.
- Visible signs of damage, overheating, or melting on the relay housing.
Installation Tips
- Disconnect all power to the system before installation.
- A heat sink is recommended for loads approaching the 40A rating to ensure proper heat dissipation.
- Ensure all screw terminals are securely fastened to prevent arcing.
- Verify that the wire gauge used is appropriate for the electrical load.
- Confirm input and output connections are correct before applying power.
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.0 ★★★★★
Based on 12 reviews
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Product Reviews
★★★★★ 4
Comforter
Nice and cooling but bigger color looks more yellow
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Reviewed in the United States on May 2, 2026
★★★★★ 5
Hot sleepers need this
Color: Haze Blue, Size: King(106"*90")
i love this, im a very hot sleeper but this has been a game changer for me at night, its so soft and breathable i can sleep at night without waking up so hot. it doesnt hold odor and for the price of this its so worth it, i wish they had different colors cause light colors stain easier but i love the one i got.
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Reviewed in the United States on May 17, 2026
★★★★★ 5
Cool and looks good
Color: Haze Blue, Size: King(106"*90")
Looks really nice and cooling. We love it!
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Reviewed in the United States on May 26, 2026
★★★★★ 5
Love it! Both sides, soft, cool and cozy
I am a very HOT sleeper and I love this blanket! I have a couple other cooling blankets including the Rest brand which is now extremely expensive. This blanket is just as good as Rest's, if not better because it has two different sides. The cooling side does stay very cold to the touch and the microfiber side is very cozy and snuggy without overheating me. I like the weight of the blanket it's not too heavy but it's not too light or thin. Even my cat loves this blanket! She has a lot of blankets/ places to sleep but often I find her on my bed curled up on this blanket in particular. Just be sure to always wash in cold water and dry without any heat. I wash mine in cold and either use the no heat cycle of my dryer or more often air dry it, hanging it over my bedroom door with a fan pointed on it. Because of the material it dries quickly.
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Reviewed in the United States on October 4, 2025
★★★★★ 5
Edredón de pluma de ganso
Color: White/All Season, Size: Queen
I’m extremely happy with this comforter. The quality is outstanding — it feels soft, fluffy, and luxurious, just like a hotel duvet. The cotton fabric is breathable and comfortable, making it perfect for all seasons. It keeps me warm at night without feeling too heavy or overheating.
The stitching and overall construction are very well done, and it looks beautiful on the bed. It also arrived well packaged and expanded nicely after opening. The Queen size fits perfectly and gives the bed a clean, elegant look.
For the price, this is an amazing value. Highly recommended if you want a cozy, high-quality comforter that feels premium!
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Reviewed in the United States on April 6, 2026