Use the MC4 Locking Sleeve when solar modules are equipped with Staubli (formerly Multi- Contact USA) MC4 connectors. In order to comply with the 2008 National Electric code for accessible arrays, the plug connection must be secured with the UL approved, pluggable safety lock clip (PV-SSH4).
Once the clip PV-SSH4 is installed, the PV plug connection can only be unlocked using the PV-MS tool.
