Intermatic AG3000 Surge Protector 120/240 VAC single split phase for use on a variety of HVAC equipment Green indicator lights lets you know it's protecting your equipment In-10kA; SCCR: 20kA; MCOV: L-N 150V L-L 300V; VPR: L-L 1200, L-N/G 700 Type 4X enclosure Only HVAC Surge Protector that can be installed in Type 1 and Type 2 applications