Dynasphere Air Terminal, MKIV


Dynasphere Air Terminal, MKIV

The economic and safety implications of lightning can be devastating. In general, the highest point of a facility is the most vulnerable to a direct lightning strike. Lightning rods or air terminals are needed to capture the strike to a preferred point and to safely conduct the energy to ground to minimize the risk.

The ERICO Dynasphere air terminal provides a preferred point for lightning discharges which would otherwise strike and damage an unprotected structure and/or its contents. The primary function of an air terminal, or air termination system, is to capture the lightning strike to a preferred point, so that the discharge current can be directed via the downconductor(s) to the grounding system.


  • Dynamic response to the approach of a lightning downleader
  • Non-radioactive technology
  • No external power required
  • Three replaceable terminals for specific elevation requirments

More Information

Material: Stainless Steel 316
Temperature: -40 to 100 °C
Part Number Article Number Effective Projected Area Diameter Height Thread Size Unit Weight
D/SMKIVSS 702085 270.96 mm² 25.7 cm 22 cm 1/2 BSPP 2.6 kg

Due to a policy of continued product development, specifications are subject to change without notice.
CADDY, CADWELD, CRITEC, ERICO, ERIFLEX, ERITECH, and LENTON are registered trademarks of ERICO International Corporation.

UL, UR, cUL, cUR, cULus and cURus are registered certification marks of UL LLC.


ERITECH SYSTEM 3000 Lightning Protection Products