27.5kV Vertical-Break Outdoor HV Disconnect Switch
Compact vertical-break design | Isolation & maintenance earthing
Specifications
| Model | GW1-27.5D |
|---|---|
| Standard | GB 1985-2014 HV AC disconnectors and earthing switches; TB/T railway industry standards |
| Rated Voltage | 27.5kV / 10kV / 15kV (per model) |
| Design Speed | N/A (fixed installation equipment) |
| Operating Temperature | -40°C to +70°C |
| Altitude | ≤ 4,000 m |
| Materials | Hot-dip galvanized steel frame; copper alloy contacts; high-strength post insulators |
| Installation | Pole-side or independent foundation mounting; manual / motorized / hand-crank operating mechanisms |
The GW1-27.5D is a 27.5kV vertical-break outdoor high-voltage disconnect switch for electrical isolation and maintenance earthing applications on electrified railway catenary and substations. Its compact vertical-break design minimizes the installation footprint — valuable on pole-top and confined substation sites.
Built per GB 1985-2014 and TB/T railway industry standards, the switch combines a hot-dip galvanized steel frame, copper alloy contacts and high-strength post insulators for dependable operation from -40°C to +70°C at altitudes up to 4,000 m.
The switch mounts on pole sides or independent foundations and accepts manual, motorized or hand-crank operating mechanisms, supporting both new-build lines and automation retrofits.
Contact Henan Chuangwei Railway Equipment Co., Ltd. for datasheets, type test reports and quotations.
Frequently Asked Questions
What are the benefits of a vertical-break design?
Vertical-break switches need less horizontal space than side-break types, suiting pole-top mounting and compact substation layouts while still giving a clear visible break.
Can it be used for maintenance earthing?
Yes, the design supports maintenance earthing applications on catenary and substation installations; an earthing-blade variant is also available (GW4-27.5/1250D).
What mounting options exist?
Pole-side or independent foundation mounting, with manual, hand-crank or motorized mechanisms.
Performance
Operating Conditions
Outdoor service from -40°C to +70°C at altitudes to 4,000 m, including polluted and humid railway corridor atmospheres.
Mechanical
Compact vertical-break mechanism reduces footprint for pole-top and confined substation installations.
Electrical
27.5kV isolation per GB 1985-2014 with visible break; supports maintenance earthing schemes.
Applications
Catenary Isolation
Section isolation on electrified railway OCS.
Compact Substations
Small-footprint isolation where space is limited.
Outdoor Service
Galvanized structure for open-air duty.
Cold Regions
Operation down to -40°C.