- 50 kA/Mode & 100 kA/phase Surge Current Protection
- Thermally-Protected Metal Oxide Varistors (TMOVs)
- Power On and Failure LED
- 5 year warranty (longer optional)
- Traffic and Transportation
The ASCO Model 256 is an upgrade to the ASCO Model 254, adding an LED for failure indication and much better lightning protection than the standard Model 254. Model 256 utilizes Thermally-Protected Metal Oxide Varistors (TMOV’s) with an integrated thermally activated element designed to open in the event of overheating due to the abnormal overvoltage, limited current conditions.