DCC Specialties PSXX & PSXX-AR Manual Reset Push Button Switch
For both the PSX & PSX-AR, the J7-1 & J7-2 terminals are the auto/manual reset inputs. If the connections are open [as sent from the factory], the breaker will automatically try to reset. When you connect the two pin terminals together with a SPST toggle switch or a N/C [normally closed] push button switch, then the breaker will remain off after a short until the connection from J7-1 & J7-2 is momentarily opened.
 
MSRP $6.95  dsppsxxpb
https://tonystrains.com/product/dcc-specialties-psxx-psxx-ar-manual-reset-push-button-switch