Surge protective device. 20 A maximum load current. 120 V rated line voltage. 135 V maximum continuous operating voltage. Staged-multi component series circuit type. 72 kA peak surge current. 330 V clamping voltage. 50 or 60 Hz operating frequency range. 1440 joules rating. 5 to 20P input plug. type-5-20R. -10 to 60°C operating temperature range. Designed for mounting on 19 inch racks where transient voltage surge suppression is desired for rack mounted electronic equipment. Each device offers a total of 12 protected outlets (10 inch back and 2 inch front) to provide easy plug-in convenience for all mounted equipment. Advanced circuit design offers extremely tight clamping levels and exceptional noise attenuation. Each unit is provided with power, protection and outlet polarity or ground status LED diagnostics a resettable overload circuit breaker and a 12 feet power supply cord.