Function:FSPD140 Level 2 Whole House Surge Protection Device Can limit the transient overvoltage entering the power cord or signal transmission line to the range allowed by the device or system. Larger lightning currents can also be directed to the ground. Protect smart appliances and electronic devices from damage. Reliable protection:The device has a clear audible alarm system, audible alarm, protection status LED, red service LED, Protection status led off, audible alarm, red service light flashing, indicating that the device is no longer providing protection. At this time, you need to replace the surge arrester Product Parameter:Installation Type: Indoor/Outdoor.Mounting Method: Surface/Flange/Through-hole.Rated Current: 140kA.Operating Frequency: 50/60 Hz.Operating Temperature: -40℃ to 85℃ (-40℉ to 185℉).Operating Voltage: 240/120V.Nominal Discharge Current (In): 20kA.Short-Circuit Current Rating (SCCR): 200kA.Maximum Continuous Operating Voltage (MCOV): 180V (L-N, L-G, N-G), 360V (L-L).Voltage Protection Rating (VPR): 700V (L-N, L-G, N-G), 1200V (L-L). Superior Quality:Made of Premium materials. High performance for long lasting time.Easy and fast installation.Can be installed indoors or outdoors.It is usually installed near electrical equipment. Satisfaction Guarantee:If you are not satisfaction or have any questions about our product.Please feel free to contact us.We will provide professional service to solve your problems. FSPD140 Level 2 Whole House Surge Protection Device Fits for Siemens Boltshield FSPD140,Rated for 140,000 Amps,120/240V,protection(L-N, L-G, N-G)