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Description
SSR-25AA AC to AC Solid State RelaySSR 25AA Solid State Relay Key Features Model: SSR 25AA Type: Single Phase AC to AC Solid State Relay Control Input Voltage: 80 250V AC Load Output Voltage: 24 380V AC Maximum Load Current: 25A Switching Method: Zero crossing trigger Operation: Silent, no spark, high speed switching Construction: Features an integrated metal baseplate for heat dissipation Dimensions: 5. 8 x 4. 5 x 2. 2 cm Replaces Cross Reference Part Numbers SSR 40AA RM1A23A25
SSR-25AA Solid State Relay
Key Features
- Model: SSR-25AA
- Type: Single-Phase AC-to-AC Solid State Relay
- Control Input Voltage: 80-250V AC
- Load Output Voltage: 24-380V AC
- Maximum Load Current: 25A
- Switching Method: Zero-crossing trigger
- Operation: Silent, no-spark, high-speed switching
- Construction: Features an integrated metal baseplate for heat dissipation
- Dimensions: 5.8 x 4.5 x 2.2 cm
Replaces / Cross-Reference Part Numbers
- SSR-40AA
- RM1A23A25
- RA2425D
- D2425-10
- RN1A23D25
- 240A25
- SSR-25AA-H
- S2225X
- 25A-H3-380VAC
- RJ1A48D25
Compatibility & Fitment
- Designed for general purpose AC load switching in industrial automation, process control systems, and machinery.
- Compatible with control circuits providing an 80-250V AC signal.
- Suitable for resistive and inductive AC loads up to 25A within a 24-380V AC voltage range.
- Requires a heat sink (not included) for operation near maximum rated current to prevent thermal damage.
When to Replace
- The connected load circuit remains permanently on or off.
- Relay fails to activate when control voltage is applied.
- Intermittent or unreliable switching performance.
- Visible signs of overheating, melting, or physical damage to the housing.
Installation Tips
- Disconnect all power to the circuit before installation or removal.
- Ensure correct wiring for input (control) and output (load) terminals.
- Apply a thin layer of thermal compound between the relay's metal base and the mounting heat sink.
- Securely fasten the relay to a heat sink appropriately sized for your specific load current.
- Verify that the control signal and load voltage/current are within the specified ratings of the relay.
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
4.6 ★★★★★
Based on 14 reviews
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Product Reviews
★★★★★ 3
These are not sized correctly - beware
Color: Blue-ice Plus, Size: King(Pack of 2), Color: Blue-ice Plus, Size: King(Pack of 2)
Edit: I was going to return these pillows but the seller contacted me and offered a full refund due to the size issue without having to send the pillows back.
I am happy with this and happy to keep them on a spare queen size bed as they really are nice pillows. Just the wrong size.
pros: they are a nice pillow and the cooling feature is really great, and you can adjust to your liking
cons: absolutely wrong size. Ordered King, tag says king, all measurements on listing and tag say 20x36, in reality they are more like 20x30. Definitely Queen pillows being sold as King.
I did not see any reviews at first about size issues but after I got these and did a search it does look like others have had the same problem.
A shame, would have given them a great review if they were the correct size
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Reviewed in the United States on February 23, 2026
★★★★★ 5
Cool and comfy
Color: Blue-ice Plus, Size: King(Pack of 1)
Great pillow. Keeps you cool.
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Reviewed in the United States on May 8, 2026
★★★★★ 5
Really Good Cooling Pillows for Sleeping
Color: Blue-ice Plus, Size: Queen(Pack of 2), Color: Blue-ice Plus, Size: Queen(Pack of 2)
These cooling pillows are very soft and provide excellent support for your head and neck. They are adjustable by taking our the stuffing if you need them to be more flat or less firm. The look great and comes in a pack of two which is a great value. During use, I did notice they have great shape retention and it does not take them long to return to their fluffy full shape. I am a hot sleeper and these do keep your head cool - just be aware using a pillow cover does reduce the cool ability but this allows you to adjust for weather like during winters to add a pillow case for extra warmth. Very happy with this purchase and got a second set to replace my old pillows.
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Reviewed in the United States on April 28, 2026
★★★★★ 5
Soft and smooth cover
Color: Grey, Size: Body（20"X 54"）
This is a nice pillow cover overall. The fabric feels good and it's comfortable to sleep on, especially compared to a more basic cotton cover. It is maybe a little thinner than I expected, so if you want something thick and heavy this probably isn't that. But for a soft smooth cover that fits and feels decent, I think it's worth it. No major complaints from me after using it.
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Reviewed in the United States on May 16, 2026
★★★★★ 5
These are the ones you want
Color: Grey, Size: Body（20"X 54"）
May need to iron them out when wash/dried but my old ones still look new- soft, cooling, smooth, color is still great. Not itchy or cheap feeling. Buying a new set for family.
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Reviewed in the United States on May 15, 2026