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The GWR-12/36 Outdoor AC High Voltage Disconnect Switch 24kV 630A is designed for reliable power isolation in outdoor substations and overhead distribution networks. This 24kV disconnect switch provides stable switching performance, excellent insulation, and long-term weather resistance. It ensures secure power disconnection for maintenance and fault protection, making it ideal for utility operators and industrial power systems.
High mechanical strength for harsh outdoor environments
Hot-dip galvanized hardware ensures long-term corrosion resistance
Reliable 24kV insulation performance prevents flashover
Smooth & stable switching mechanism
Compatible with 630A medium-voltage networks
Low maintenance, long service life
1.The altitude above sea level:2000m
2.The ambient air temperature:-40~40'℃ wind speed does not exceed 32m/s.
3.The earthquake intensity does not exceed 8 degrees.
4.The working situation is without frequent violent vibration.
5.The installation site of ordinary type isolator should be kept away from gas,smoke chemical deposition,salt-spray fog, dust and other explosive and corrosive maters that affect seriously insulation and conduction capability of the isolator.
6.Pollution-proof type isolator is applies to severe filthy conduction area, however,it shouldn't be any explosive matters and matters causing fire.
Overhead distribution line isolation
Outdoor substations power sectioning
Industrial facilities requiring manual isolation
Utility pole-mounted HV switching points
The disconnect switch is mounted on a utility pole or steel structure using galvanized brackets and insulators.
Connect incoming and outgoing 24kV conductors to each terminal using appropriate compression connectors.
Operating the handle or rod manually opens or closes the 24kV circuit to isolate power during maintenance.
Can be paired with an earthing switch for additional safety.
| No. | Item | Unit | Data | ||
| 1 | Rated voltage | kV | 12,36 | ||
| 2 | Rated current | A | 630 | ||
| 3 | Rated power frequency | Hz | 50/60 | ||
| 4 | Rated peak withstand current | kA | 60,63 | ||
| 5 | Rated short-time withstand current | kA | 20,25 | ||
| 6 | Rated short-time withstand current duration | S | 4 | ||
| 7 | Main loop resistance | μ Ω | 12kV≤90 | 36kV≤100 | |
| 8 | 1min.PF withstand voltage(dry) | Phase to phase/ earth across open contacts | kV | 42/48 30 75/85 | 95/115 85 185/215 |
| 9 | 1min.PF withstand voltage(wet) | ||||
| 10 | Lightning impulse withstand voltage | ||||
| 11 | Mechanical life | Times | 200 | ||
Quality Assurance
Each unit is manufactured in compliance with IEC 62271-102 & national utility standards.
100% electrical testing, including insulation, contact resistance, and mechanical endurance.
Hot-dip galvanized parts meet ASTM A153 corrosion protection grade.
Strict factory inspection guarantees long-term reliability.
Q1: What is the rated voltage and current of this disconnect switch?
A1: It is rated at 24kV and 630A, suitable for medium-voltage distribution networks.
Q2: Is the GWR-12/36 disconnect switch weatherproof?
A2: Yes, it is fully weatherproof with hot-dip galvanized hardware and UV-resistant insulation.
Q3: Can it be installed on utility poles?
A3: Yes, the switch is designed for pole-mounted and substation structures.
Q4: Does it require frequent maintenance?
A4: No, only periodic inspection is needed due to its durable construction.
