GN19-12/400 Indoor High Voltage AC Disconnect Switch – 12kV 400A Three-Phase Isolation Knife Switch for Power Substations and Industrial Systems

GN19-12/400 Indoor High Voltage AC Disconnect Switch (12kV 400A)

Product Overview

The GN19-12/400 is a precision-engineered indoor high-voltage disconnect switch designed for use in medium voltage switchgear and power distribution systems. Operating at a rated voltage of 12kV with a rated current of 400A, it serves as a critical safety component by providing a reliable means of isolating electrical circuits during maintenance or inspections. This switch is widely utilized across power plants, substations, and industrial electrical infrastructures to ensure both operational stability and personnel safety.

Core Features & Technical Advantages

• Optimized Thermal Management: The contact knife is constructed from two slotted copper plates, which significantly increases the surface area for heat dissipation, effectively lowering operating temperatures.

• Superior Mechanical Stability: The dual-plate knife design not only manages heat but also enhances the mechanical strength and dynamic stability of the switch during high-stress operations.

• High-Performance Insulation: Equipped with high-strength epoxy resin support insulators (pillar type), providing excellent dielectric properties and reliable operation in indoor environments.

• Compact & Integrated Design: Specifically designed with a small footprint and a 210 mm phase-to-phase distance, making it ideal for installation within space-constrained switchgear cabinets.

• Ease of Operation: Features a synchronized 3-pole parallel structure that can be easily connected to a CS6-1 type manual moving mechanism for straightforward and reliable manual control.

• Durable Construction: Built on a reinforced base frame with a robust rotating shaft assembly to ensure a mechanical endurance of up to 2,000 cycles.

Technical Specifications