GN27-40.5 Indoor High Voltage Disconnecting Switch GN27-40.5/630A
GN27-40.5/630A indoor high voltage disconnecting switch is a three-phase AC 50Hz high voltage switchgear, used for making and breaking circuits under voltage and no-load conditions in 35kV power systems. Equipped with CS6-2 manual operating mechanism or CX6 electric mechanism.
I. Overview
GN27-40.5/630A indoor high voltage disconnecting switch is a three-phase AC 50Hz high voltage switchgear, used for making and breaking circuits under voltage and no-load conditions in 35kV power systems. Equipped with CS6-2 manual operating mechanism or CX6 electric mechanism.
II. Product Features
- Scientifically designed, reasonable, novel structure;
- Multi-contact, rotary contact, good self-cleaning capability, improved heat dissipation;
- Contacts on two surfaces, small operating torque, high pressure resistance, easy adjustment;
- Large creepage distance, enhanced insulation capability, withstand voltage meets requirements;
- Bearings added on the rotating shaft, improved service life, light operation.
III. Main Technical Parameters
| Model |
Rated Voltage (kV) |
Rated Current (A) |
Rated Short-time Withstand Current RMS/Time (kA/4s) |
Rated Peak Withstand Current (kA) |
Lightning Impulse Withstand Voltage (kV) |
1min Power Frequency Withstand Voltage (kV) |
| To Earth and Between Poles |
Across Gap |
To Earth and Between Poles |
Across Gap |
| GN27-41.5CD/630-20 |
40.5 |
630 |
20/4S |
50 |
185 |
215 |
95 |
115 |
| GN27-41.5CD/1250-31.5 |
40.5 |
1250 |
31.5/4S |
80 |
185 |
215 |
95 |
115 |
IV. Outline Installation Dimensions

Please strictly follow the GN27-40.5/630A Indoor High Voltage Disconnecting Switch product specifications for installation and operation to ensure the safe and stable operation of the power system and distribution equipment.
GN27-40.5 indoor disconnecting switch is suitable for 40.5kV switchgear. Installation requires blade insertion depth into fixed contact ≥20mm, phase-to-phase insulation partition without deformation or arc burn marks, transmission linkage pin shafts regularly lubricated with molybdenum disulfide grease, five-prevention interlock device verified item by item before operation.