SSR-40DA Solid State Relay Module 3-32VDC/24-380VAC 40A
SSR-40DA Solid State Relay Module 3-32VDC/24-380VAC 40A
SSR-40DA Solid State Relay Module 3-32VDC/24-380VAC 40A
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 The Tech Depot, Bengaluru - trusted by makers, engineers, and professionals across India. Fast shipping, 7-day warranty on manufacturing defects, and expert technical support.
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 |
| Warranty | 7-day warranty on manufacturing defects |
| Support | Email & WhatsApp 24/7 |
| Price | Rs.298.00 |
Key Features
- 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 & The Tech Depot: 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.
Why Choose the SSR-40DA from The Tech Depot?
- 100% authentic SSR-40DA sourced directly from trusted and authorized suppliers
- Tested and verified for correct switching operation before dispatch
- 1-5 day shipping, 7-8 day delivery from our Bengaluru warehouse to most locations across India
- Expert technical support included - get help with wiring, heatsink selection, and load calculations
- 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
- Trusted by thousands of makers, engineers, and professionals across India
Understanding the SSR-40DA Solid State Relay
The SSR-40
Frequently Asked Questions
When will I receive my order?
Products ship within 1-5 days from our Bengaluru warehouse. Delivery within 7-8 days to most locations across India.
Is technical support available?
Yes, 24/7 support via email and WhatsApp for setup, troubleshooting, and application guidance.
What is your return policy?
7-day returns on manufacturing defects only. Full refund or replacement. 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.
Buy SSR-40DA Solid State Relay Module 3-32VDC/24-380VAC 40A Online in India
Purchase the SSR-40DA Solid State Relay Module 3-32VDC/24-380VAC 40A online at The Tech Depot - India's most trusted electronics components store. We deliver across all major cities including Bengaluru, Mumbai, Delhi, Chennai, Hyderabad, Pune, Kolkata, Ahmedabad, Jaipur, and Surat. Get the best price on SSR-40DA Solid State Relay Module 3-32VDC/24-380VAC 40A with fast 1-5 day shipping from our Bengaluru warehouse. All products are 100% authentic, sourced from authorized distributors with 7-day warranty on manufacturing defects.
Looking to buy SSR-40DA Solid State Relay Module 3-32VDC/24-380VAC 40A at the best price in India? The Tech Depot 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.