TOMZN 2P 63A/80A Circuit Breaker  DIN Relay (TOWBC-2P-T) 
  
  
    
  Available from:
      
      
    Aliexpress.com
    
    
    
    
    
    
    
    
    
    
    
    
    
      Install method:
    
    
      
      USB to Serial
      
    
    
    
| GPIO # | Component | 
|---|---|
| GPIO00 | None | 
| GPIO01 | None | 
| GPIO02 | None | 
| GPIO03 | None | 
| GPIO04 | None | 
| GPIO05 | None | 
| GPIO09 | None | 
| GPIO10 | None | 
| GPIO12 | Button_n 1 | 
| GPIO13 | Relay 1 | 
| GPIO14 | None | 
| GPIO15 | None | 
| GPIO16 | Led 1 | 
| GPIO17 | None | 
Configuration
  
  {"NAME":"TOWBC-2P-T","GPIO":[0,0,0,0,0,0,0,0,64,224,0,0,288,0],"FLAG":0,"BASE":18}
  Remove DIN rail part, two screws under side to easy open.
Internally the neutral is just bridged across, so this is actually just a single pole (on the live) and the neutral is still active when the switch is off
Pinout
.