ASCO Model 140 (Edco SRA-6LC) Surge Protective Device

The ASCO Model 140 SPDs are three terminal devices, two of which are connected across the signal inputs of the detector for differential mode protection, and the third is grounded to protect against common mode damage. The Model 140 SPDs are intended for all popular makes of loop detectors presently on the market.


  • Automatic Recovery
  • Lightning Protection for Vehicle Loop Detectors
  • Solid State Protection
  • Differential Protection
  • Common-Mode Protection
  • Compatible with Digital Detectors
  • Epoxy Encapsulated


  • Fast Response Time
  • Years of Dependable Service
  • Easily Installs

Technical Specifications