TSG – Triggered Spark Gap


TSG - Triggered Spark Gap

The Triggered Spark Gap (TSG) is a vented spark gap with triggering circuit that typically allows let-through voltage of less than 1500V to be achieved. The superior follow current performance allows the TSG to be used on “active” circuits such as L-L, L-N, L-PE as well as N-PE. The high surge rating is ideal for Neutral-Earth bonding of TT power systems, as per IEC 60364-5-534.


  • Triggering air gap technology provides low let-through voltage – offers superior protection compared to traditional spark gaps
  • Effective equipotential bonding – provides N-PE equilization protection bond on TT power distribution systems
  • Meets IEC® 61643-1 test class I, II
  • Can be used L-PE, or L-N due to follow current control
  • ERICO Surge Products are covered by an extended warranty; see the attached document for more information


Ideal for installation into electrical panels or equipment. Allows protection of TT, TN-C, TN-S and  TN-C-S systems.

More Information

Part No. Description
TSG11302S Triggered Spark Gap, 220-240 V
TSG11302S120V Triggered Spark Gap, 120 V

C-Tick, CE

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

ANSI is a registered trademark of the American National Standards Institute.  IEC is a registered trademark of the International Electrotechnical Commission.  IEEE is a registered trademark of the Institute of Electrical and Electronics Engineers, Incorporated.  NEMA is a registered trademark of the National Electrical Manufacturers Association.  UL is a registered trademark of Underwriters Laboratories, Inc.


TSG data sheet

TSG Surge Diverter Installation Instructions

Surge 5 Year Warranty