An in-line disconnect device for rapidly shutting off power from individual solar panels. SnapRS is NEC 2017 compliant, and doesn’t require any extra hardware to mount - no pairing and no fussy digital communications. Just snap a Generac SnapRS disconnect device to each PV module for total rapid-shutdown performance. When signaled by the inverter, SnapRS units break the PV circuit, reducing array voltage to <80V in seconds.