SG3-DAR075-A2 Three Phase Input 12-32VDC Output 48-480VAC 75ARA Random

Details of SG3-DAR075-A2 Three phases Input 12-32VDC Output 48-480VAC Current 75A Random

SG3-DAR075-A2 Three phases Input 12-32VDC Output 48-480VAC Current 75A 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 immediate circuit activation upon receiving control signals without waiting for zero crossing — suitable for loads requiring quick 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 components

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
• Bright large lighting systems requiring quick control

Advantages

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

Cautions

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

Tech Data SG3-DAR075-A2 Three phases Input 12-32VDC Output 48-480VAC Current 75A Random