SSR-40DA Solid State Relay Module 3-32VDC/24-380VAC 40A
SSR-40DA Solid State Relay Module 3-32VDC/24-380VAC 40A
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Looking to buy SSR-40DA Solid State Relay Module 3-32VDC/24-380VAC 40A at the best price in India? Tech Depot India offers competitive pricing, bulk discounts for orders of 10+ units, and dedicated technical support via email and WhatsApp. Whether you are a hobbyist, student, or professional engineer, we have everything you need for your electronics projects.
High-performance SSR-40DA Solid State Relay rated at 40A for reliable, silent, and wear-free AC load switching. Accepts 3-32VDC control input to switch 24-380VAC loads - ideal for heater control, motor switching, lighting automation, and industrial process control. No moving parts means zero contact bounce, longer lifespan, and faster switching compared to mechanical relays. Available at Tech Depot India, Bengaluru - trusted by makers, engineers, and professionals across India.
Specifications
| Model | SSR-40DA |
| Relay Type | Solid State Relay (SSR) - DC to AC |
| Control (Input) Voltage | 3-32VDC |
| Load (Output) Voltage | 24-380VAC |
| Maximum Load Current | 40A |
| Trigger Current | 7.5mA typical (at 12VDC input) |
| Output Type | AC switching (zero-cross triggering) |
| On-State Voltage Drop | <=1.6V |
| Isolation Voltage | >=2500VAC (input to output) |
| Switching Speed | <=10ms (half cycle of load frequency) |
| Leakage Current | <=2mA |
| Operating Temperature | -20 degreesC to +80 degreesC (derate above 40 degreesC) |
| LED Indicator | Yes - red LED for input status |
| Mounting | Panel mount with screw terminals |
| Heatsink Compatibility | Standard SSR heatsink mounting (recommended for loads above 10A) |
| Body Material | Flame-retardant plastic housing with metal base plate |
| Dimensions (approx.) | 58 x 45 x 32 mm |
| Weight (approx.) | 75g |
| Category | Relay Module / Power Switching Component |
| Origin | Original / Authentic |
| Price | Rs.298.00 |
Why Choose SSR-40DA Solid State Relay Module 3-32VDC/24-380VAC 40A?
100% Authentic
GST Invoice - A GST invoice is included with every order.
Expert Support - Dedicated technical help on WhatsApp and email.
Pan-India Delivery - Shipped across Bengaluru, Delhi NCR, Hyderabad and all of India.
Trusted by Makers - Used by students, hobbyists and professionals nationwide.
Key Features of SSR-40DA Solid State Relay Module 3-32VDC/24-380VAC 40A
- 40A High-Current Switching: Handles heavy AC loads including heaters, motors, pumps, and high-power lighting circuits up to 40 amps.
- DC-to-AC Control: 3-32VDC input makes it directly compatible with Arduino (5V), ESP32 (3.3V), Raspberry Pi, PLC outputs, and other microcontrollers.
- Zero-Cross Triggering: Switches the AC load at the zero-crossing point of the waveform, minimizing electrical noise, EMI, and inrush current spikes.
- No Moving Parts: Solid-state design eliminates mechanical wear, contact arcing, and audible clicking - far superior lifespan compared to electromechanical relays.
- High-Speed Switching: Responds within half a cycle (~10ms at 50Hz), enabling precise PWM-based power control and fast on/off cycling.
- Optical Isolation: Input and output are optically isolated at >=2500VAC, ensuring complete electrical separation between your control circuit and mains power.
- Built-in LED Indicator: Red LED on the input side provides instant visual confirmation of relay activation status.
- Compact & Tech Depot India: Industrial-grade plastic housing with metal base plate for efficient heat dissipation and easy heatsink mounting.
- Screw Terminal Connections: Secure, tool-friendly screw terminals for both input and output - no soldering required for installation.
- Silent Operation: Perfect for noise-sensitive environments like home automation, laboratory equipment, and audio/studio setups.
- Competitively priced at just Rs.298 for a genuine 40A-rated solid state relay
- Ideal companion for Arduino, ESP32, Raspberry Pi, PLC, and industrial control projects
Understanding the SSR-40DA Solid State Relay
The SSR-40
Frequently Asked Questions
When will I receive my order?
Is technical support available?
Yes, responsive support via email and WhatsApp for setup, troubleshooting, and application guidance.
What is your return policy?
Not applicable for user damage or misuse.
Are bulk discounts available?
Yes, wholesale pricing on orders of 10+ units. Contact us via WhatsApp or email for a custom quote.
Customer Support
Email: techdepotindia@gmail.com
WhatsApp: Available for setup and troubleshooting help
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