GN30-12 Indoor Rotating High Voltage Isolating Switch

The GN30-12 indoor rotating high‑voltage isolating switch is a new‑generation rotary‑contact medium‑voltage isolation device designed for 12kV, 50Hz three‑phase AC indoor power systems. Adopting an innovative rotary touch cutter structure, the switch features an integrated frame design that fixes two sets of insulators and contact components on the upper and lower planes of three phases with a shared bottom frame.

By rotating the contact knife, the GN30-12 realizes smooth, precise opening and closing actions to form a clear and visible isolation gap. With a simplified mechanical structure, stable transmission and reliable contact performance, it delivers consistent high‑voltage isolation effects under long‑term operation. Fully compliant with GB1985 national standards for high‑voltage isolating switches, this compact and high‑reliability disconnector is widely matched with mainstream indoor switchgear for safe no‑load circuit isolation and equipment maintenance protection.

On the basis of GN30-12 type indoor rotating high voltage isolating switch, the GN30-12D type indoor rotating high voltage isolating switch adds the form of the contact knife, which can meet the needs of different power systems. This product is compact in design, small in footprint, strong in insulation and easy to install and adjust. Its performance accords with the requirements of the national standard GB1985-89 AC High Voltage Isolating Switch and Earthing Switch, suitable for the indoor system with rated voltage of 10kV, AC 50Hz and below, can be used to open and close circuit under the condition where there is a voltage without a load. It can be used in conjunction with the high voltage switchgear and can also be used alone

The GN30-12 rotary isolating switch is specially optimized for compact indoor medium‑voltage power distribution scenarios, widely used in 12kV indoor power supply and distribution projects across multiple industries.

It is perfectly compatible with XGN fixed‑type switchgear, KYN28 series withdrawable switchgear and ring main unit cabinets, serving as core isolation equipment for urban power grid renovation, industrial park distribution rooms, factory indoor substations, commercial building power distribution systems, hospital and airport power supply facilities. Thanks to its space‑saving rotary structure, it is particularly suitable for narrow‑space cabinet layouts and modular compact substation projects. It provides reliable circuit isolation and safety locking for daily power switching and equipment overhaul, ensuring standardized and safe operation of medium‑voltage power systems.

Before installation, confirm the product model and rated parameters match the 12kV switchgear specifications. Check the cabinet reserved installation position and ensure the mounting base is flat and firm.

Fix the integrated bottom frame of the isolating switch steadily on the cabinet mounting bracket and fasten all bolts to avoid displacement or shaking. Assemble and debug the rotary contact knife and mechanical operating mechanism to ensure flexible rotation, no jamming, and accurate closing alignment of upper and lower contacts.

After mechanical assembly, inspect the isolation gap distance and contact tightness to guarantee complete isolation and reliable conduction status. Conduct multiple manual opening and closing tests to verify stable mechanical performance. Complete circuit connection and insulation detection, and confirm no abnormal conditions before official commissioning and operation.

Hot Tags: gn30-12 indoor rotating high voltage isolating switch, China gn30-12 indoor rotating high voltage isolating switch manufacturers, suppliers, factory