SSR-40 DD Solid State Relay 40A DC to DC 3-32V Input 5-200V Output

SSR-40 DD Solid State Relay – 40A DC to DC

The SSR-40 DD is a high-quality single-phase solid state relay designed for switching DC loads using a low-voltage DC control signal. With no moving parts, it offers silent, spark-free, and long-lasting switching — perfect for industrial automation, temperature controllers, and Arduino/Raspberry Pi-based control systems.

Key Specifications

• Model: SSR-40 DD
• Type: DC to DC Solid State Relay
• Load Voltage (Output): 5–200V DC
• Load Current: 40A (max)
• Control Voltage (Input): 3–32V DC
• Control Current: ~20mA
• Isolation: Optocoupler isolated
• Mounting: DIN rail or panel mount (screw terminals)
• Certification: CE marked
• Operating Temperature: -30°C to +75°C

Applications

• Arduino & Raspberry Pi DC load switching
• Temperature control systems (PID controllers)
• Industrial automation and motor control
• Solar and battery management systems
• High-current DC switching without mechanical relays

Tip: For loads above 20A, attach a heatsink to the relay for optimal thermal performance.