Edco SRA16C-1 Vehicle Loop Detection

Edco SRA16C-1
Vehicle Loop Detection
Emerson Network Power > CHINA > Products > By Type > Surge Protection > Signal > Edco SRA16C-1 Vehicle Loop Detection

The Edco SRA16C-1 is a three terminal device, 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.

Differential mode surges (induced voltage across the loop detector input terminals) are clamped by a semiconductor array instantly. The array is designed to appear as very low capacitance to the detector.

Common mode surges (induced voltage between the loop leads & ground) are handled by a rugged three-element gas discharge tube which operates (fi res) at 90 VDC and thereafter clamps the two loop leads to 30 volts in respect to ground. This design eliminates any ground noise from entering the loop detector and being amplifi ed. The Edco SRA16C-1 is intended for all current detector models on the market.

  • Rugged gas tube protection
  • Compatible with digital detectors
  • 5 year warranty
  • Part Number:  Edco SRA16C-1
  • Operating Voltage:  75 VDC
  • Clamping Voltage:  90 VDC
  • Operating Current:  NA
  • Peak Surge Current: 10 kA
  • SPD Technology:  GDT
  • Connection Type:  Leads
  • Operating Temperature:  -40°C to +85°C
  • Dimensions:  1" Sq., Ht. 2" max
  • Mounting:  No. 10 - 32 x 3/8" stud
  • Weight:  3 oz
  • Certifications:  ISO 9001:2000


Mounting brackets are available for installing multiple units in the controller cabinet. The brackets are capable of mounting four or eight devices in-line. One Edco SRA16C-1 is used for each loop detector to be protected.

Units are installed as close as practical to the point where the detector loop wires enter the controller cabinet. Connect one of the flexible leads to each end of the loop. The common (bolt) connection on each Edco SRA16C-1 must be connected to earth ground.

Best performance is obtained by (1) shortening the fl exible leads as much as possible, and (2) providing the lowest possible impedance to ground.


The Edco SRA16C-1W/LEADS (special order) is installed very similar to the standard unit except the common (bolt) is replaced with a green wire.

Technical Specification

Surge Suppression Products
Contact our support department about your Surge Protection product.

Telephone: +1 607 721 8840
Toll-Free: +1 800 288 6169

Contact Support