TSG SRF – Triggered Spark Gap SRF


TSG SRF - Triggered Spark Gap SRF

Triggered Spark Gap Surge Reduction Filters provide high-energy surge diversion, making them ideal for primary service protection applications. The units also provide efficient low pass filtering to substantially reduce the risk of physical equipment damage by reducing the rate-of-voltage rise.

The high energy diversion ability of the spark gap has allowed the size and weight of the units to be considerably reduced.


  • Incorporates TSG and TD Technologies – high performance protection
  • High surge rating – ideal for exposed critical service entrance applications
  • Surge Reduction Filters dramatically reduce let-through voltage – provides optimum protection
  • Surge Reduction Filters reduce rate-of-voltage rise (dv/dt) – improved protection for electronic equipment
  • Small size/weight – aids installation
  • Escutcheon panel – improved safety
  • ERICO Surge Products are covered by an extended warranty; see the attached document for more information


Surge Reduction Filters should be used at the point-of-entry to a facility for protection of sensitive equipment, or installed downstream of the point-of-entry diverters to protect dedicated systems and equipment.

More Information

Part No. Description
TSG-SRF140 1 phase 2W+G, 40A, 220-240 V
TSG-SRF163 1 phase 2W+G, 63A, 220-240 V
TSG-SRF1125 1 phase 2W+G, 125A, 220-240 V
TSG-SRF340 3 phase Y 4W+G, 40A, 220/480 VAC to 240/415 VAC
TSG-SRF363 3 phase Y 4W+G, 63A, 220/480 VAC to 240/415 VAC
TSG-SRF3125 3 phase Y 4W+G, 125A, 220/480 VAC to 240/415 VAC
TSG-SRF3200 3 phase Y 4W+G, 200A, 220/480 VAC to 240/415 VAC
TSG-SRF3400 3 phase Y 4W+G, 400A, 220/480 VAC to 240/415 VAC
TSG-SRF3630 3 phase Y 4W+G, 630A, 220/480 VAC to 240/415 VAC
TSG-SRF31250 3 phase Y 4W+G, 1250A, 220/480 VAC to 240/415 VAC
TSG-SRF32000 3 phase Y 4W+G, 2000A, 220/480 VAC to 240/415 VAC

AS3100, C-Tick, Certificate of Suitability

Surge Rated to Meet:
ANSI®/IEEE® C62.41.2 Cat A, Cat B, Cat C
ANSI®/IEEE® C62.41.2 Scenario II, Exposure 3, 100 kA 8/20 µs, 10 kA 10/350 µs

ANSI is a registered trademark of the American National Standards Institute.  IEEE is a registered trademark of the Institute of Electrical and Electronics Engineers, Incorporated.


TSG SRF data sheets

TSG Series Surge Reduction Filters (TSG-SRF) Installation and Operating Instructions

Technical Note TN CR 006, SPDs and the Benefits of Filtering

Surge 5 Year Warranty