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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 nVent 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 requirements


Material: Stainless Steel 316 (EN 1.4401)
Temperature: -40 to 212 °F
Part Number Effective Projected Area DiameterØ HeightH Thread SizeTS Unit Weight
D/SMKIVSS 42 in² 10.098" 8.661" 1/2 BSPP 5.735 lb

nVent, nVent CADDY, nVent ERICO, nVent ERIFLEX, and nVent LENTON are owned by nVent or its global affiliates. All other trademarks are the property of their respective owners. nVent reserves the right to change specifications without prior notice.

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


Wind Power Solutions
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UL OVTZ.E202878

Instruction Sheets