1.Features:

• 30A high current power supply 
  
• With soft start setting 
  
• High power negative temperature thermistor 
• Its smart circuit design eliminates the need for a separate small transformer. Soft-start protects the rectifier bridge.
• It can avoid impacting the power grid during startup, and prevent the total power supply from tripping, and has a long service life. 

2. Description:

• Product Name: High Power Soft Start Board 
  
• Input voltage: AC 220V 
  
• Output Voltage: AC 220A 
  
• Supply Current: 30A 
  
• Power:6600W 
  
• Work Temperature:-25℃~85℃
• Work Humidity: 5%~95% RH 
  
• Size:74.5*57.5*29.5mm 

3. Circuit Working Principle:

• Turn on and delay the power on. 
  
• NTC is in series with the output load circuit to reduce the startup current (delay circuit control).
  
• Shorted NTC after the start is completed, and the power supply is directly output. complete the soft-start process.