SSR-40DD Input 3-32VDC Output 5-60VDC Solid State Relay
Introducing the SSR-40DD Solid State Relay, a dependable and efficient solution for switching high-power DC loads in industrial and commercial applications. With its durable construction and versatile design, this solid-state relay ensures precise control and consistent performance, making it perfect for a variety of electrical switching tasks.
Key Features:
- Wide Input and Output Voltage Range: The SSR-40DD is designed to accept input voltages ranging from 3V to 32VDC, while providing output voltages between 5V and 60VDC. This broad voltage compatibility ensures compatibility with a variety of power sources and load requirements.
- High Current Handling: With a maximum current rating of 40A, this solid-state relay can effectively handle high-power loads, allowing for the switching of heavy-duty equipment and machinery with ease.
- DC Control: Featuring DC control, the SSR-40DD can be easily integrated into existing control systems and circuits, providing seamless compatibility and reliable operation in DC-based applications.
- Low On-state Voltage Drop: The SSR-40DD exhibits a low on-state voltage drop of ≤1.5V, minimizing power loss and ensuring efficient operation even under heavy load conditions.
- Minimal Leakage Current: With an on-state leakage current of ≤2mA, this solid-state relay offers precise control and minimal energy wastage, enhancing overall system efficiency and performance.
- Fast Response Time: The SSR-40DD boasts an off-state time of ≤10ms, ensuring rapid switching and precise control of connected loads, making it suitable for time-critical applications.
- Wide Operating Temperature Range: Designed to withstand harsh environmental conditions, the SSR-40DD operates reliably in temperatures ranging from -20°C to 80°C, making it suitable for use in diverse industrial environments.
- Compact Design: Measuring just 60mm x 45mm x 22mm, the SSR-40DD features a compact and space-saving design, allowing for easy integration into control panels, enclosures, and machinery.
Applications:
- Industrial automation
- Motor control
- Heating and cooling systems
- Lighting control
- Power distribution systems
- Renewable energy systems
Whether you’re controlling motors, heaters, lights, or other high-power DC loads, the SSR-40DD Solid State Relay offers reliable performance, precise control, and versatile compatibility, making it an indispensable component in your electrical systems and applications.
- Built in RC absorption
- Photoelectric isolation
- SCR output
- LED indicator for operation status
- Panel mount
- Zero-crossing switch type
- UL Approved, CE Compliant to EN60950-1
Specifications:
| Parameter | Specification |
|---|---|
| Model | SSR-40DD |
| Input Voltage | 3-32VDC |
| Output Voltage | 5-60VDC |
| Maximum Current | 40A |
| Control Type | DC control |
| Control Voltage | 3-32VDC |
| On-state Voltage Drop | ≤1.5V |
| On-state Leakage | ≤2mA |
| Off-state Time | ≤10ms |
| Operating Temperature | -20°C to 80°C |
| Dimensions | 60mm x 45mm x 22mm |
PACKAGE INCLUDES
1 X SSR-40DD Input 3-32VDC Output 5-60VDC Solid State Relay
Technical Specifications
| Model | SSR-40DD |
|---|---|
| SKU | AI3871 |
| Weight | 0.13 kg |
| Availability | Out of Stock |
Applications & Use Cases
The SSR-40DD Input 3-32VDC Output 5-60VDC Solid State Relay is a versatile solid state relays used across a wide range of applications including electronics projects, DIY builds, prototyping, and educational experiments.
Common use cases:
- Integrating into a custom electronics project
- Learning and experimenting with circuits
- Replacing or upgrading components in existing setups
This product is ideal for electronics enthusiasts, engineers, and students.
Technical Tip: Always verify voltage and current requirements before connecting to your circuit. Check datasheets for detailed specifications and pin configurations.
Shipping & Delivery
- Free shipping on orders above ₹999 across India
- Dispatched within 1-3 business days
- Expected delivery: 3-7 business days depending on location
- Secure packaging to ensure safe transit of electronic components


Himanshu Kamath (verified owner) –
Decent SSR-40DD Input 3-32VDC Output 5-60VDC Solid. Trigger voltage is compatible with both 3.3V and 5V logic.
Akshat Khurana (verified owner) –
Nice SSR-40DD Input 3-32VDC Output 5-60VDC Solid. Relay clicks are clear. Terminal connections are solid.
Rashmi Desai (verified owner) –
Very satisfied. My smart home system runs on these SSR-40DD Input 3-32VDC Output 5-60VDC Solid modules. Totally reliable.
Gauri Dubey (verified owner) –
Very satisfied. My smart home system runs on these SSR-40DD Input 3-32VDC Output 5-60VDC Solid modules. Totally reliable.
Anirudh Kulkarni (verified owner) –
Nice SSR-40DD Input 3-32VDC Output 5-60VDC Solid. Relay clicks are clear. Terminal connections are solid.
Sachin Dhillon (verified owner) –
Great quality SSR-40DD Input 3-32VDC Output 5-60VDC Solid. All channels working. Optocoupler isolation is a nice feature.
Saurabh Kapoor (verified owner) –
This SSR-40DD Input 3-32VDC Output 5-60VDC Solid is robust and well built. PCB quality is excellent.
Sneha Sharma (verified owner) –
This SSR-40DD Input 3-32VDC Output 5-60VDC Solid is robust and well built. PCB quality is excellent.
Rakesh Rathore –
Decent SSR-40DD Input 3-32VDC Output 5-60VDC Solid. Trigger voltage is compatible with both 3.3V and 5V logic.
Prashant Negi (verified owner) –
Great quality SSR-40DD Input 3-32VDC Output 5-60VDC Solid. All channels working. Optocoupler isolation is a nice feature.
Dev Singh (verified owner) –
Love this SSR-40DD Input 3-32VDC Output 5-60VDC Solid. Click sound is satisfying and switching is instantaneous.
Chitra Nair (verified owner) –
Good quality SSR-40DD Input 3-32VDC Output 5-60VDC Solid. Using it for my college project. Performs as expected.
Naman Solanki (verified owner) –
Good SSR-40DD Input 3-32VDC Output 5-60VDC Solid. Works well. LED indicators are helpful for debugging.
Anushka Naidu –
Superb SSR-40DD Input 3-32VDC Output 5-60VDC Solid! Using it to control my garden irrigation system. Very dependable.
Simran Joshi (verified owner) –
Perfect SSR-40DD Input 3-32VDC Output 5-60VDC Solid for my IoT project. Controlling appliances remotely works flawlessly.
Aisha Dubey (verified owner) –
Nice SSR-40DD Input 3-32VDC Output 5-60VDC Solid. Relay clicks are clear. Terminal connections are solid.
Anand Kamath –
Very satisfied. My smart home system runs on these SSR-40DD Input 3-32VDC Output 5-60VDC Solid modules. Totally reliable.
Vipin Das (verified owner) –
Superb SSR-40DD Input 3-32VDC Output 5-60VDC Solid! Using it to control my garden irrigation system. Very dependable.
Yogesh Grewal (verified owner) –
Love this SSR-40DD Input 3-32VDC Output 5-60VDC Solid. Click sound is satisfying and switching is instantaneous.
Lalit Garg –
This SSR-40DD Input 3-32VDC Output 5-60VDC Solid is robust and well built. PCB quality is excellent.
Akash Rao (verified owner) –
Average SSR-40DD Input 3-32VDC Output 5-60VDC Solid. Works but the relay generates some EMI. Added snubber to fix.
Rahul Bhat –
Outstanding quality! This SSR-40DD Input 3-32VDC Output 5-60VDC Solid has been running 24/7 for months without a single failure.
Sarika Rawat (verified owner) –
Average SSR-40DD Input 3-32VDC Output 5-60VDC Solid. Works but the relay generates some EMI. Added snubber to fix.
Raghav Pandey (verified owner) –
Nice SSR-40DD Input 3-32VDC Output 5-60VDC Solid. Relay clicks are clear. Terminal connections are solid.
Akash Pandey (verified owner) –
This SSR-40DD Input 3-32VDC Output 5-60VDC Solid is robust and well built. PCB quality is excellent.
Vidya Panchal –
Good quality SSR-40DD Input 3-32VDC Output 5-60VDC Solid. Using it for my college project. Performs as expected.
Hemant Shah (verified owner) –
Excellent SSR-40DD Input 3-32VDC Output 5-60VDC Solid! Switching is clean and reliable. Using it for home automation.
Harshit Hegde (verified owner) –
Excellent SSR-40DD Input 3-32VDC Output 5-60VDC Solid! Switching is clean and reliable. Using it for home automation.
Swati Agarwal (verified owner) –
Decent SSR-40DD Input 3-32VDC Output 5-60VDC Solid. Trigger voltage is compatible with both 3.3V and 5V logic.
Hardik Batra (verified owner) –
Good quality SSR-40DD Input 3-32VDC Output 5-60VDC Solid. Using it for my college project. Performs as expected.
Kunal Banerjee (verified owner) –
Good SSR-40DD Input 3-32VDC Output 5-60VDC Solid. Works well. LED indicators are helpful for debugging.
Dinesh Panchal (verified owner) –
Very satisfied. My smart home system runs on these SSR-40DD Input 3-32VDC Output 5-60VDC Solid modules. Totally reliable.
Daksh Srivastava (verified owner) –
Perfect SSR-40DD Input 3-32VDC Output 5-60VDC Solid for my IoT project. Controlling appliances remotely works flawlessly.
Kritika Rajan (verified owner) –
This SSR-40DD Input 3-32VDC Output 5-60VDC Solid works perfectly with my Arduino. Easy to wire and control.
Raj Bose (verified owner) –
Perfect SSR-40DD Input 3-32VDC Output 5-60VDC Solid for my IoT project. Controlling appliances remotely works flawlessly.
Anil Chatterjee –
Perfect SSR-40DD Input 3-32VDC Output 5-60VDC Solid for my IoT project. Controlling appliances remotely works flawlessly.
Harsh Batra (verified owner) –
Very satisfied. My smart home system runs on these SSR-40DD Input 3-32VDC Output 5-60VDC Solid modules. Totally reliable.
Riya Sethi (verified owner) –
Great quality SSR-40DD Input 3-32VDC Output 5-60VDC Solid. All channels working. Optocoupler isolation is a nice feature.
Saurabh Pillai (verified owner) –
Decent SSR-40DD Input 3-32VDC Output 5-60VDC Solid. Trigger voltage is compatible with both 3.3V and 5V logic.
Chitra Bhat (verified owner) –
Superb SSR-40DD Input 3-32VDC Output 5-60VDC Solid! Using it to control my garden irrigation system. Very dependable.
Sunil Ghosh (verified owner) –
Great SSR-40DD Input 3-32VDC Output 5-60VDC Solid. Easy to integrate with NodeMCU for WiFi-based control.
Milan Bhandari (verified owner) –
Superb SSR-40DD Input 3-32VDC Output 5-60VDC Solid! Using it to control my garden irrigation system. Very dependable.