Rated short-duration power-frequency 
withstand voltage

Rated lightning impulse withstand voltage

Rated frequency

Rated normal current of busbar

Rated normal current of feeder

Rated short-time withstand current, 3 s

Rated peak withstand current

Rated short-circuit making current

Partition Class:

PM (partition of metal)

Loss of service continuity category for 
panels or panel blocks: 
- Panels with disconnector (R, T, L) 
- Panels without disconnector (K, M)

 
 
LSC 2 
LSC 1

Accessibility of Compartments (enclosure): 
- Busbar compartment: 
- Switching-device compartment: 
- Low-voltage compartment (option): 
- Cable compartment for panels or panel blocks 
with HV HRC fuses (T) 
without HV HRC fuses (R)

  
Non-accessible 
Non-accessible 
Tool-based 
  
Interlock-controlled 
Interlock-controlled

Designation of the internal 
arc classification, IAC 
IAC class for 
- Wall-standing arrangement 
- Free-standing arrangement

Rated voltage is 36 kV 
 
 
IAC A FL to 20 kA 1s
IAC A FLR to 20 kA 1s

Type of accessibility A 

 
 
- F 
- L 
- R

Switchgear in closed electrical 
service location, access "for 
authorized personnel only" 
(according to IEC 62271-200) 
Front 
Lateral 
Rear (for free-standing arrangement)

Arc test current

Up to 20 kA

Test duration

1 s