With the VARITECTOR VSPC base unit VSPC BASE 1CL R-8951730000 from Weidmuller offers a new family of surge protection devices for control and instrumentation (C&I) applications. Long cable runs from the field to the controls need protecting on against electrical surges, caused by remote lightning strikes. These surges can distort signals and damage connected devices. Varitector base unitVSPC BASE 1CL R-8951730000 allows users to ensure their controls and I/O devices are protected from lightning induced surges in cables. VSPC BASE 1CL R-8951730000 allows your choice of pluggable/replaceable (VSPC) 1CL R modules.