9
Surge Protection Is a Balancing Act
Figure 2: Breakdown of type 1 through 5 devices.
Type 1
Components
Assemblies
Type 5
Discrete
Components
Type 4
Component
Assemblies
Type 3
Component
Assemblies
Type 2
Component
Assemblies
Type 2
Nominal Current
rating is 3 kA or
greater
Type 3*
*May require testing
at 6 kilovolts (kV)/3
kA under operating
duty cycle tests
Type 1
Nominal Current
rating is 10 kA or
greater
