The GN30-12D Series is a high-performance Indoor Rotary High Voltage Isolating Switch designed for power systems with a rated voltage of 12kV (11kV compatible) and AC 50/60Hz. Featuring a unique vertical rotary contact structure, this switch is ideal for compact switchgear designs where space is limited. The “D” model comes integrated with an Earthing Switch, providing essential grounding protection during equipment maintenance.
Technical Specifications
| Parameter | Value |
|---|---|
| Rated Voltage (Ur) | 12 kV |
| Rated Frequency | 50 Hz |
| Rated Current | 400 A / 630 A |
| Short-Time Withstand (4s) | 20 kA |
| Peak Withstand Current | 50 kA |
| Power Frequency Withstand | 42 kV (1 min) |
| Lightning Impulse Withstand | 75 kV |
| Mechanical Life | ≥ 2000 operations |
| Operating Mechanism | Manual rotary handle |
| Installation Position | Indoor panel mount |
Why Choose GN30-12D?
Compact Rotary Design: The rotary blade mechanism significantly reduces the operating space required inside the panel, making it perfect for Ring Main Units (RMU) and compact switchgear.
Double-Break System: Provides a reliable visible isolation gap on both sides, ensuring maximum safety for maintenance personnel.
Integrated Grounding: The built-in earthing switch simplifies the panel interlock system and enhances operational safety.
Low Contact Resistance: High-pressure spring contacts with silver plating ensure excellent conductivity and prevent thermal aging.
Easy Maintenance: Modular structure with high-strength epoxy resin insulators for long-term durability in indoor environments.
Applications
KYN28A-12 switchgear for incoming/outgoing lines
Transformer room control panels
Capacitor banks and harmonic filter panels
Industrial motor control centers (MCC)
OEM switchgear manufacturing integration
