🔌 Original Fotek Solid State Relay SSR-40DA (40A, DC to AC)
⚡ Product Description
Upgrade your electrical control systems with the SSR-40DA original Fotek Solid State Relay, a high-performance switching solution designed for reliable, silent, and long-lasting operation. Built for industrial and DIY applications, this relay allows you to safely control high-power AC loads using low-voltage DC signals, making it ideal for automation, temperature control, and smart systems.
Unlike traditional mechanical relays, the SSR-40DA uses advanced semiconductor technology—eliminating moving parts, reducing wear, and ensuring faster switching with improved durability. This makes it perfect for continuous operation in demanding environments such as heating systems, ovens, industrial machinery, and lighting control.
With a 40A load capacity and wide voltage compatibility, this solid state relay delivers stable performance for both commercial and industrial applications. Its zero-crossing trigger technology minimizes electrical noise and protects connected equipment from voltage spikes.
🚀 Key Features
- ⚡ High Power Handling – Supports up to 40A load current
- 🔌 DC to AC Control – Easily switch AC devices using low DC voltage
- 🔇 Silent Operation – No mechanical contacts = no noise or sparks
- ⚙️ Fast Switching Speed – Ideal for high-frequency operations
- 🛡️ Long Lifespan – Resistant to wear, vibration, and shock
- 🔥 Zero-Cross Triggering – Reduces EMI and protects equipment
- 💡 LED Indicator – Visual status for input signal
- ❄️ High Reliability – Suitable for continuous industrial use
📊 Technical Specifications
| Parameter | Value |
|---|---|
| Model | SSR-40DA |
| Load Current | 40A |
| Input Voltage | 3–32V DC |
| Output Voltage | 24–380V AC |
| Control Type | DC to AC (DA) |
| Trigger Method | Zero-cross |
| Response Time | ≤10ms |
| Isolation Voltage | Up to 4kV |
| Operating Temperature | -40°C to +80°C |
| Mounting | Panel mount |
Specifications may vary slightly depending on batch/manufacturer.
🔧 Applications
The SSR-40DA is widely used in:
- 🔥 Temperature controllers (PID systems)
- 🍳 Industrial ovens & heating elements
- 💡 Lighting systems
- ⚙️ Automation & PLC control panels
- 🧪 Laboratory equipment
- 🔌 Motor and pump control
Its ability to handle high loads with precision and reliability makes it a must-have component for both professionals and DIY enthusiasts.
📦 What’s in the Box
- 1 × SSR-40DA Solid State Relay
⚠️ Installation Tip
For optimal performance and safety, it is recommended to use a heat sink when operating near maximum load to prevent overheating and extend product lifespan. Click here to see the complete set with heatsink and temperature controller.
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