Wzonpa factory’s high-performance MV Outdoor Isolation Switch designed for safe, reliable disconnection in medium-voltage systems with durable outdoor capability.
1.Reliable Isolation Performance
The MV Outdoor Isolation Switch made in China provides a clear visible break, ensuring safe electrical isolation during maintenance operations.
Designed for no-load operation, it effectively switches small capacitive and inductive currents.
2.Robust Outdoor Durability
Built with corrosion-resistant materials to withstand UV exposure, harsh weather, and pollution up to Class III.
Maintains stable performance in temperatures from -30℃ to +40℃ and altitudes up to 3000m.
3.Strong Mechanical and Electrical Strength
Withstands high short-circuit forces and offers excellent insulation performance.
Engineered for long service life even under frequent operation conditions.
4.Flexible Installation and Operation
Suitable for pole-mounted outdoor installation with easy integration into existing substations.
Available with manual or motorized mechanisms for operational flexibility.
1.Power Transmission & Distribution
Widely used in substations (6kV–40.5kV) to isolate busbars, circuit breakers, and transformers.
2.Industrial and Utility Sectors
Ideal for maintenance isolation in factories, utilities, and infrastructure systems.
3.Renewable Energy Systems
Ensures safe switching in solar and wind power installations where outdoor reliability is critical.
1.High Safety Assurance
Visible disconnection point significantly reduces operational risks.
2.Cost-Effective Lifecycle
Low maintenance requirements combined with durable construction reduce total ownership cost.
3.Precision Engineering
Manufactured using high-quality materials for consistent electrical endurance and reliability.
4.Versatile Functionality
Supports switching of small currents, adding flexibility across multiple applications.
The MV Outdoor Isolation Switch is designed to operate reliably under demanding outdoor environments, ensuring stable performance and long service life:
Ambient Temperature: Operates efficiently within a range of -30℃ to +40℃, suitable for various climate conditions.
Altitude: Designed for installation at elevations up to 3000 meters without performance degradation.
Wind Resistance: Withstands wind speeds up to 35 m/s, ensuring structural stability in harsh weather.
Seismic Performance: Capable of enduring seismic intensity up to 8 degrees for enhanced operational safety.
Pollution Level: Suitable for areas up to Pollution Class III, maintaining insulation performance in contaminated environments.
Installation Environment: Requires locations free from severe vibration, corrosive gases, fire hazards, or explosion risks to ensure optimal operation.
| Item | Unit | Parameters | |||||
| GW4-40.5 | GW4-72.5 | GW4-126 | GW4-126G | GW4-145 | |||
| Rated voltage | KV | 40.5 | 72.5 | 126 | 126 | 145 | |
| Rated current | A |
630 1250 2000 2500 |
630 1250 2000 2500 4000 |
630 1250 2000 2500 |
630 1250 |
1250 2000 2500 |
|
| Rated short-time withstand current (RMS) | KA |
20 31.5 40(46) |
20 31.5 40(46) |
20 31.5 40(46) |
20 31.5 |
20 31.5 40(46) |
|
| Rated peak withstand current(peak) | KA |
50 80 100(104) |
50 80 100(104) |
50 80 100(104) |
5080 |
50 80 100(104) |
|
|
Rated short-time withstand voltage (effective value) |
To the ground | KV | 80 | 140 | 185(230) | 185 | 375 |
| Fracture | 110 | 160 | 210(265) | 210 | 315 | ||
| Rated lightning impulse withstand voltage(peak) | To the ground | KV | 185 | 325 | 450(550) | 450 | 650 |
| Fracture | 215 | 375 | 520(630) | 550 | 750 | ||
| Wiring terminal rated the horizontal tension | 490(735) | 735 | 735 | 735 | 960 | ||
| Weight of single pole | 80 | 200 | 240 | 300 | 300 | ||
Q1: What is the main function of an MV Outdoor Isolation Switch?
A: It is used to safely disconnect and isolate electrical equipment during maintenance, ensuring no current flow and protecting personnel and systems.
Q2: Can this switch operate under load conditions?
A: No, it is designed for no-load operation but can safely switch small capacitive or inductive currents.
Q3: Where is the MV Outdoor Isolation Switch typically installed?
A: It is commonly installed on outdoor poles or substations in medium-voltage networks.
Q4: How does it improve system safety?
A: The visible air gap confirms complete isolation, preventing accidental energization during maintenance.
Q5: Is it suitable for harsh environments?
A: Yes, it is designed to withstand extreme temperatures, wind speeds, and polluted environments.
You are welcome to contact us at any time for a quote.
Address
No. 58 Binhainan Fourth Road, Economic Development Zone, Yueqing City, Wenzhou City, Zhejiang Province, China
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