The GN19-12C/1250 is a high-performance Through-Wall Indoor High Voltage Isolating Switch designed for power systems with a rated voltage of 12kV (11kV compatible) and a rated current of 1250A. The “C” designation indicates its specialized through-wall structure, featuring integrated bushings that allow for seamless connection across switchgear partitions while maintaining superior insulation and mechanical strength.
Technical Parameters
| Parameter | Value |
|---|---|
| Model | GN19-12C/1250 |
| Rated Voltage | 12kV |
| Rated Current | 1250A |
| Rated Short-Time Current | 31.5kA / 4s |
| Peak Withstand Current | 80kA |
| Insulation Level | 42kV (Power Frequency) |
| Installation Type | Indoor, through-wall |
| Applicable Standards | IEC 62271-102, GB/T 1985 |
| Operation Mechanism | Manual or Motorized Optional |
Key Advantages
High Current Capacity: Specifically engineered for 1250A applications, featuring reinforced copper contacts with silver plating to ensure low temperature rise and high conductivity.
Through-Wall Efficiency: Integrated porcelain bushings simplify cabinet layout, allowing the switch to serve as both an isolator and a wall-crossing component.
Robust Short-Circuit Withstand: Designed to handle peak currents up to 80kA, ensuring system safety during fault conditions.
Standardized Compatibility: Fully matches KYN28, XGN and other mainstream high-voltage switchgear. Compatible with CS6-1 manual operating mechanisms.
Application
Wall-through configuration is ideal for dual-chamber MV panel layouts
Space-saving installation in substations with narrow control aisles
Isolated maintenance access, separating the operator and live parts
Used in transformer rooms, gas plants, and shielded control cubicles
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