1. Rated Voltage

• 12kV, 17.5kV, 24kV

2. Insulation Level

• For 12kV: 42/75kV (power frequency withstand voltage/impulse withstand voltage)

3. Rated Main Busbar Current (at 40℃)

• Up to 4000A

4. Rated Branch Busbar Current (at 40℃)

• Options: 630A, 1250A, 1600A, 2000A, 2500A

5. Rated Short-Circuit Breaking Current

• 31.5kA, 40kA, etc.

6. Arcing Fault Withstand Current

• 31.5kA, 40kA (1s)

7. Normal Service Environmental Conditions

• Maximum ambient temperature: +40℃
• Minimum ambient temperature: -15℃
• Maximum daily average relative humidity: 95%
• Maximum monthly average relative humidity: 90%
• Maximum altitude: 1000m
• Maximum seismic intensity: 8 degrees

8. Protection Class

• Enclosure protection class: IP4X
• Internal protection class: IP2X

9. Basic Cabinet Dimensions

• Height (H): 2200mm
• Width (W): 500mm, 650mm, 800mm, 1000mm (multiple options)
• Depth (D): 1310mm, 1620mm, 1810mm (different specifications)

Additional Notes

• Marine - use UNIGEAR ZS1 switchgear:
  
• Ambient temperature range: 0℃ - 45℃
• Enclosure protection class: Typically IP42
• Switchgear height: 2500mm (2530mm with pressure relief channels and chimneys)