SG3-DAR1HP F/R-A2 Three phases Input 10-50VDC Output 48-480VAC 0.75KW Random

Details Solid State Relay Model : SG3-DAR1HP F/R-A2 Three phases Input 10-50VDC Output 48-480VAC 0.75KW Random

Solid State Relay Model : SG3-DAR1HP F/R-A2 Three phases Input 10-50VDC Output 48-480VAC 0.75KW Random Solid State Relay (SSR) type three-phase (Three-phase SSR)

How it works

Solid State Relay (SSR) is an electronic device that functions as an electrical switch, controlling circuit on/off without moving parts like mechanical relays (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 circuitry such as 12-32VDC
• Output (Load): Works with AC-powered loads such as motors, heaters, etc.
• Random Turn-on: Refers to immediate circuit activation upon control signal without waiting for zero crossing point — suitable for fast-response loads like inductive load (motors).

Features 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 Service Life No wear or sparking parts

Applications

3 Phase SSR is suitable for high-power loads, especially in industrial electrical systems such as:

• Large heaters (Heaters)
• 3 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 relay, should have a breaker or protective device
• Random Turn-on may not be suitable for some types of loads (consider Zero Crossing for certain loads)