CITEL MLPC1-277L-V The MLPC is a economical, compact SPD for LED Drivers. The SPD protects any 120-277Vac single phase driver from the effects of lightning and switching transients. The unit is installed in series with the load and turns off the LED light fixture when maintenance is required. The MLPC incorporates a CITEL's "no leakage current" NLC technology which significantly increases the life expectancy of the unit while providing protection against temporary overvoltages. The MLPC has screw terminal connectors with an in/out, pass through design. UL1449 4th Edition - Open Type 2. ANSI/IEEE C136.2, Elevated 20kV/10kA. ANSI/IEEE C62.41, Category C High Exposure 10kV/10kA