SSR-40DA Input 3-32VDC Output 24-380VAC Solid State Relay

The SSR-40DA is a solid-state relay (SSR) designed for DC-to-AC switching, meaning it can control AC loads using a DC input signal. It is commonly used in industrial, automation, and home automation systems to switch AC devices with a low-voltage DC control signal. The SSR-40DA provides a safe and reliable method of controlling high-voltage AC loads without the mechanical wear and tear associated with traditional mechanical relays.

Product Description:

Key Features:

1. Input Voltage (Control):

   • The SSR-40DA is designed to be controlled by a 3-32V DC signal. This allows you to use low-voltage controllers like Arduino, Raspberry Pi, PLC, or other microcontroller-based systems to control high-power AC devices.

2. Output Voltage (Load):

   • The SSR-40DA switches AC loads in the range of 24V to 380V AC. This is ideal for applications where you need to control standard AC devices such as motors, heaters, lighting systems, and other industrial equipment that operates on AC voltage.

3. Current Rating:

   • The SSR-40DA is capable of handling up to 40A of current on the AC side. This makes it suitable for switching high-power devices and industrial equipment such as large motors, heaters, or other high-current AC devices.

4. Zero-Crossing Detection:

   • The relay uses zero-crossing detection technology, which ensures that it switches on or off when the AC voltage crosses zero, minimizing electrical noise and reducing stress on both the relay and the connected load. This helps extend the lifespan of the relay and connected equipment.

5. No Mechanical Parts:

   • The SSR-40DA is a solid-state relay, meaning it has no moving parts. This makes it more durable and reliable than mechanical relays, as there is no physical wear and tear over time.

6. Optical Isolation:

   • The relay has optical isolation between the input and output, which ensures that the low-voltage control circuit is isolated from the high-voltage AC side, offering safety and protection against high-voltage surges or spikes.

7. Fast Switching:

   • The SSR-40DA provides fast switching without the mechanical delay inherent in traditional relays. This is beneficial for applications that require quick or frequent switching.

8. Heat Dissipation:

   • Since the SSR-40DA can handle high current (up to 40A), it is designed with a heatsink for better heat dissipation. However, for high-power applications, additional cooling may be necessary to ensure reliable operation.