SG3-DAR3HP F/R-A2 Three phases Input 10-50VDC Output 48-480VAC 2.2KW Random

Details SG3-DAR3HP F/R-A2 Three phases Input 10-50VDC Output 48-480VAC 2.2KW Random

SG3-DAR3HP F/R-A2 Three phases Input 10-50VDC Output 48-480VAC 2.2KW Random Solid State Relay (SSR) Three-phase SSR

How It Works

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

• Input (Control): Uses DC voltage signal to trigger internal circuitry, such as 12-32VDC
• Output (Load): Works with AC-powered loads like motors, heaters, etc.
• Random Turn-on: Refers to immediate circuit activation upon control signal without waiting for zero crossing — suitable for fast-response loads such as 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 model
• Output Random Turn-on Operation (immediate turn-on without waiting for zero crossing)
• Isolation Uses Opto-isolator to isolate control circuit from load circuit
• Long Life No wear and tear or arcing parts

Applications

3 Phase SSR (Solid State Relay) is suitable for high-power loads, especially in industrial electrical systems such as:

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

Advantages

• No noise during operation
• Fast switching, responds in milliseconds
• No arc or wear and tear
• Durable, long-lasting use

Caution

• Must have a heat sink or cooling system
• Not tolerant of overcurrent like magnetic relays, should have a breaker or protective device
• Random Turn-on may not be suitable for certain types of loads (consider Zero Crossing for some load types)