Description:
The SSR-100DA Solid State Relay Module is a high-performance DC to AC electronic switching relay designed for reliable and silent control of high-power AC loads. With a 3–32V DC control input and the ability to switch 24–380V AC loads up to 100A, this relay is ideal for industrial automation, temperature control systems, PLCs, CNC machines, heating equipment, and DIY electrical projects.
Unlike mechanical relays, the SSR-100DA uses semiconductor technology for fast switching, long operational life, vibration resistance, and silent operation. Its robust aluminum base improves heat dissipation, making it suitable for continuous-duty industrial environments when used with an appropriate heatsink.
Specifications:
| Parameter | Details |
|---|---|
| Product Name | SSR-100DA Solid State Relay |
| Model | SSR-100DA |
| Relay Type | DC Control to AC Output |
| Control Input Voltage | 3–32V DC |
| Load Output Voltage | 24–380V AC |
| Maximum Load Current | 100A |
| Switching Type | Zero Cross Trigger |
| Isolation Method | Optical Isolation |
| Mounting Type | Panel Mount |
| Housing Material | Flame-Retardant Plastic with Aluminum Base |
| Operating Temperature | -30°C to +80°C (Typical) |
| Applications | Automation, Heating, Industrial Control |
Features:
- High current switching capacity up to 100A
- Wide 3–32V DC control input
- Supports 24–380V AC output loads
- Silent operation with no mechanical contacts
- Fast switching response
- Long operational lifespan
- Built-in optical isolation for enhanced safety
- Zero-cross switching reduces electrical noise
- Shock and vibration resistant
- Durable flame-retardant housing
Applications:
- Industrial automation systems
- PLC control panels
- Temperature controllers
- Electric heaters
- Ovens and furnaces
- Motor control systems
- CNC machines
- Packaging equipment
- Home automation projects
- Lighting control systems
Safety Precautions:
- Use a suitable heatsink for high-current operation.
- Ensure the load current does not exceed 100A.
- Verify correct input and output wiring before powering on.
- Install in a well-ventilated enclosure.
- Disconnect power before installation or maintenance.
- Do not touch terminals while energized.
Frequently Asked Questions ( FAQs )
Q1. What is the control input voltage?
The relay accepts a 3–32V DC control signal.
Q2. What output voltage does it switch?
It switches 24–380V AC loads.
Q3. What is the maximum load current?
The SSR-100DA supports up to 100A with proper cooling.
Q4. Does it make a clicking sound like a mechanical relay?
No. Solid State Relays operate silently because they have no moving contacts.
Q5. Is a heatsink required?
Yes. A heatsink is strongly recommended for medium to high current loads.
Q6. Can it be used with a temperature controller?
Yes, it is commonly used with PID temperature controllers for heaters and ovens.
Q7. Is the relay optically isolated?
Yes, it features optical isolation for improved electrical safety.
Q8. Can it switch DC output loads?
No. The SSR-100DA is specifically designed for DC input to AC output switching.
Package Included:
1XDC Control AC Output SSR-100DA 100A Solid State Relay
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