Solid State Relay AC to AC 40A 80-250V to 24-380V Auto Heat Sink Mount

Solid State Relay AC to AC 40A with Auto Heat Sink Mount

Model: -40AA Solid State Relay
Rated Current: 40A (Continuous Load: 10A)
Input Voltage: 80-250V AC
Load Voltage: 24-380V AC

Product Highlights:

  • High Performance: Capable of managing high power loads with an operational capacity of 40A, this solid state relay ensures reliable performance for your AC applications.
  • Versatile Voltage Range: Accepts input voltages ranging from 80-250V AC while effectively controlling output loads of 24-380V AC.
  • Heat Management: Designed with a heat sink that aids in thermal dissipation, though additional cooling methods like a large heat sink or fan are recommended for extended use at full capacity.
  • Convenient Mounting: The product comes with a heat sink mounting thread diameter (approx. 0.5cm / 0.19”). Mount it securely to ensure efficient heat management during operation.
  • Compact Dimensions: Total heat sink size of approximately 8 x 4.9 x 4.9cm (3.1” x 1.9” x 1.9”) makes it easy to integrate into various setups without taking up unnecessary space.

Why Choose Our Solid State Relay?

This Solid State Relay is engineered for professionals who demand precision and reliability in their electrical setups. Whether you are managing lighting, heating elements, or industrial automation, you can trust that the -40AA will deliver the durability and efficiency needed to power your projects with confidence.

Elevate your electronics game with the -40AA. Order now and experience the seamless control and performance the relay brings to your applications.

    • Free & Fast Shipping - We offer free shipping to most of the USA with a normal delivery time of 3-7 days. However, due to the current situation, additional delivery time (up to 3 weeks) may be required for some items.
    • Alternative Carriers - We may use alternative carriers (e.g. USPS, FedEx, UPS, etc.) to ensure your package arrives safely and on time. Due to the use of multiple carriers, we are unable to provide a tracking number automatically.
    • Handling Time - Orders are processed and shipped within 1-2 business days of receiving cleared payment.
    • Shipping Restrictions - Shipping to Alaska, Hawaii, Puerto Rico, Guam, and other US territories may incur shipping charges or delivery restrictions. Please contact us before ordering, or your order can be refunded/cancelled.
    • State Restrictions - There may be restrictions based on your state of purchase. For example, certain items may not be shipped to California due to state regulations.
    • Contact for Tracking Updates - If you require tracking updates or have any concerns about the delivery of your order, please feel free to contact us, and we will be happy to assist you.

    • 30-Day Hassle-Free Returns - We want you to be completely satisfied with your purchase. If you are not, you can return the item within 30 days of receiving it for a full refund or exchange.
    • Easy Return Process - To start a return, simply contact us and we will provide you with a prepaid return shipping label and detailed instructions.
    • Restocking Fee - There are no restocking fees for returns. However, the buyer is responsible for return shipping costs if the return is not due to a seller's error.
    • Refund Processing Time - Refunds will be processed within 5 business days of receiving the returned item in its condition.

We accept all major credit cards, PayPal, and Apple Pay for your convenience. Your payment information is secure and encrypted to ensure a safe and seamless transaction. Please complete your payment within 3 days of purchase to avoid any delays in shipping.

Your feedback is extremely important to us. We strive to provide the best products and customer service possible. If you are satisfied with your purchase, please take a moment to leave us a positive review. If you have any concerns or issues with your order, please contact us before leaving negative feedback. We are committed to resolving any problems and ensuring your satisfaction.




If you have any questions or concerns, please feel free to out to our customer support team. You can contact us through the eBay messaging system. We are available Monday to Friday, 9:00 am to 5:00 pm EST, and we will do our best to respond to your inquiry within 24 hours.



Buy it now and enjoy a pleasant shopping experience!

Model: Solid State RelayUnit Quantity: 40 AApplication: Control Equipment Panels,ElectronicsContact Material: Copper,Silver
Suitable For: Exterior,InteriorFeatures: Heavy Duty,AutomaticSmart Home Compatibility: UniversalSmart Home Protocol: Wi-Fi
Mounting Style: Panel,ScrewResistance Properties: Dust ResistantProtection Properties: Overcurrent ProtectionCurrent Type: AC
Maximum Amperage: 40 ACoil Voltage: 80-250 VCurrent Rating: 40 AType: Solid State Relay
Number of Poles: 1Number of Phases: 1Number in Pack: 1