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Description
SSR-25DD DC to DC Solid State Relay - 2 PackSSR 25DD Solid State Relay Key Features Control Method: DC to DC (DC Input, DC Output) Input Control Voltage: 3 32V DC Output Load Voltage: 5 200V DC Maximum Load Current: 25A Response Time: 10ms Dielectric Strength: >2. 5KV Design: No moving parts for silent operation and extended lifespan. Features an isolated baseplate for efficient heat dissipation. Replaces Cross Reference Part Numbers SSR 25DD Compatibility & Fitment Suitable for switching high
SSR-25DD Solid State Relay
Key Features
- Control Method: DC to DC (DC Input, DC Output)
- Input Control Voltage: 3-32V DC
- Output Load Voltage: 5-200V DC
- Maximum Load Current: 25A
- Response Time: ≤10ms
- Dielectric Strength: >2.5KV
- Design: No moving parts for silent operation and extended lifespan. Features an isolated baseplate for efficient heat dissipation.
Replaces / Cross-Reference Part Numbers
- SSR-25DD
Compatibility & Fitment
- Suitable for switching high-current DC loads using a low-voltage DC control signal.
- Common applications include industrial automation, CNC machinery, DC motor control, DC heating elements, and robotics.
- Compatible with output signals from microcontrollers such as Arduino, Raspberry Pi, and other PLC systems.
When to Replace
- The relay fails to activate the load when a control signal is present.
- The load remains permanently on, even without a control signal.
- Switching becomes intermittent or unreliable.
- The relay overheats excessively during operation, indicating internal failure.
- Visible physical damage, such as cracks, burns, or melted housing.
Installation Tips
- Disconnect all power sources before installation or service.
- A heat sink is required for load currents exceeding 10A to ensure proper thermal management and prevent overheating.
- Apply a thin layer of thermal paste between the relay's metal base and the heat sink for optimal heat transfer.
- Ensure all wire connections are secure to prevent poor contact and potential arcing.
- Verify correct polarity for both the DC input (control) and DC output (load) terminals.
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
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Product Reviews
★★★★★ 5
Best Oil on the Market
Size: 5 L
I’ve used this and only this in my 15 Scion FRS since I bought it . I used to change it every 5k but I retired and now it’s a once a year oil change with less than 5k per year. The car has never had any issues with this oil . Since NASCAR changes oil in the cars every 500 miles I don’t whine about changing it once a year. $40 for oil is better than $10k for another built motor
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Reviewed in the United States on May 24, 2026
★★★★★ 5
Satisfied!
Size: 5 L
I absolutely love this product—I've already used it multiple times. The price is affordable, too. Thank you to the seller! Five stars!
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Reviewed in the United States on May 27, 2026
★★★★★ 5
I just got it changed about 30 min ago and the engine sounds like a little cat
Size: 5 L
My Audi factory setting says I should use VW 508.00. Somewhere online it says 5w-40. It's 82000 miles and I decided to give it a shot to go 0W-20 which is what VW508.00 is. I just got it changed about 30 min ago and the engine sounds like a little cat. The gas pedal feel is very smooth, there's definitely less resistance when pushing forward. In Sports mode driving, the engine is not as loud and the lag or drag is noticeably less. And when it hits 100k, I will do a engine flush to see if I can get further improvements. So far, I really love Liqui Moly. I used to use it on my S500 and it was very smooth. A little more money goes a long way! Don't settle for less for your German cars.
Update:
I just did another 1000 miles in a week to Vegas and back. The fuel economy improved about 20%. The power increase is amazing. I could notice when I am going fast, the sustained speed at high speed is easy and continuous, It doesn't just hit a snag when your foot is off the pedal. And the engine is definitely a lot quieter and smoother. I am amazed at the overall improvement after using this oil. No other oil will do from now on.
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Reviewed in the United States on May 17, 2018
★★★★★ 5
Engine Oil
Size: 5 L
Perfect for Nissan Altima 2018 . Huge difference .
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Reviewed in the United States on March 15, 2026
★★★★★ 5
Liqui moly
Size: 1 L
Great product makes the engine work very quiet
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Reviewed in the United States on December 15, 2025