voltage protector HT-130 The applications of this instrument:Air conditioners up to 35000BTU,Conmmercial freezers,Ice makers,etc. Specification:Voltage: 220VAC/60HZMax/Min Capacity: 4400VA-20AMP 35000BTUHigh voltage cut out: 245-265 VAC 5%Low voltage but our: 170-190 VAC 5%Time delay: 3-4MinutesInput connection: L1-L2-GOutput concection: G-L1-L2