SG3-DAR025-A2 Three Phase Input 12-32VDC Output 48-480VAC 25A Random

Details of SG3-DAR025-A2 Three phases Input 12-32VDC Output 48-480VAC Current 25A Random

SG3-DAR025-A2 Three phases Input 12-32VDC Output 48-480VAC Current 25A Random Solid State Relay (SSR) Three-phase SSR

How It Works

Solid State Relay (SSR) is an electronic device that functions as an electrical switch, controlling the on-off circuit without any moving parts like a mechanical relay (Electromechanical Relay - EMR). It uses semiconductor properties such as Triac, SCR, Opto-isolator to control the flow of electric current.

• Input (Control): Uses DC voltage signal to trigger internal circuits, e.g., 12-32VDC
• Output (Load): Works with AC-powered loads such as motors, heaters, etc.
• Random Turn-on: Refers to the immediate circuit opening when control signals are present without waiting for zero crossing — suitable for loads requiring fast response like inductive load (motors)

Features and Details

• Control Voltage Type (Input) 12-32VDC
• Load Voltage Type (Output) AC 24–480V or AC 24–600V
• Current Rating 10A, 25A, 40A, 60A depending on the model
• Random Turn-on Output Operation (immediate turn-on without waiting for zero crossing)
• Circuit Isolation Uses Opto-isolator to isolate control circuit from load circuit
• Durability Long-lasting with no wear and tear or sparking parts

Applications

The three-phase SSR is suitable for high-power loads, especially in industrial electrical systems such as:

• Large heaters (Heaters)
• Three-phase motors (Three-phase Motors)
• Furnaces, industrial ovens
• PID temperature control systems
• Large lighting systems requiring fast control

Advantages

• No operational noise
• Rapid switching response in milliseconds
• No sparking or wear and tear
• Durable, long-lasting use

Cautions

• A heat sink or cooling system is required
• Not tolerant to overcurrent like mechanical relays; should have a breaker or protective device
• Random Turn-on may not be suitable for certain load types (consider zero crossing for some loads)

Tech Data SG3-DAR025-A2 Three phases Input 12-32VDC Output 48-480VAC Current 25A Random