The 11KV Outdoor MV Isolating Vacuum Load Break Switch (FZW32-12 series outdoor MV isolating vacuum type) is a medium-voltage switching device designed for 12kV power systems. Produced by Wzonpa, a professional manufacturer, supplier, and factory in power distribution equipment, this product integrates vacuum arc-extinguishing technology with a robust isolating structure to ensure safe and stable operation in demanding outdoor environments. The 11KV Outdoor MV Isolating Vacuum Load Break Switch is widely applied in transmission and distribution networks requiring frequent switching and high operational reliability.
Vacuum interrupter: Efficient arc extinction with sealed environment
Isolating blade: Provides visible disconnection for operational safety
Three-phase linkage system: Ensures synchronized switching performance
Spring energy storage mechanism: Stable mechanical operation under repeated use
The 11KV Outdoor MV Isolating Vacuum Load Break Switch separates arc-extinguishing and current-carrying functions, reducing wear and improving service life.
Explosion-free vacuum insulation design
Maintenance-free operation with sealed arc chamber
Strong corrosion resistance using stainless steel / galvanized steel
UV-protected surface coating for outdoor durability
Mechanical life up to 10,000 operations
High stability under frequent switching conditions
Compared with conventional switchgear, the 11KV Outdoor MV Isolating Vacuum Load Break Switch offers improved safety isolation and reduced maintenance cost across its lifecycle.
Power transmission and distribution substations
Metallurgy and mining power systems
Chemical processing plants
Industrial outdoor distribution networks
In real-world deployments, the 11KV Outdoor MV Isolating Vacuum Load Break Switch performs reliably under high humidity, temperature variation, and seismic conditions.
Integrated manufacturing capability in China
Proven engineering experience in MV switchgear
Stable production consistency and material traceability
Optimized design for long-term outdoor operation
Technical customization support for project requirements
The 11KV Outdoor MV Isolating Vacuum Load Break Switch is engineered to balance performance, durability, and operational safety.
| Item | Unit | Parameters | ||||
| Load switch main technical parameters and mechanical properties | ||||||
| Rated voltage | kV | 12 | 40.5 | |||
| Rated current | A | 630 | 1250 | |||
| Rated frequency | Hz | 50 | 50 | |||
| Rated peak withstand current | kA | 50 | 63 | |||
| Rated short-time withstand current | kA | 20 | 25 | |||
| Rated short-time withstand current duration | S | 4 | 4 | |||
| Rated active load breaking current | A | 630 | 1250 | |||
| Rated closed loop breaking time | A | 630 | 1250 | |||
| Rated cable charging breaking current | A | 10 | 10 | |||
| 5%at rated active load breaking current | A | 31.5 | 63 | |||
| Rated no-load transformer breaking current rated capacity | kVA | 1250 | 1250 | |||
| Rated short-circuit closing current | kA | 50 | 63 | |||
| The main circuit of electronic | μΩ | ≤150 | ≤100 | |||
| 1 min power frequency withstand voltage(RMS) | Dry test | Between poles and poles to the ground | kV | 42 | 95 | |
| Wet test | Isolating fracture | kV | 48 | 110 | ||
| Between poles and poles to the ground | kV | 30 | 85 | |||
| Lightning impulse | Between poles and poles to the ground | kV | 75 | 185 | ||
| withstand voltage(peak) | Isolating fracture | kV | 85 | 215 | ||
| Mechanical life | Times | 10000 | 10000 | |||
| Three-phase,switching in different period | ms | ≤5 | ≤5 | |||
| The contact blade just close position deviation | mm | ≤2 | ≤2 | |||
| The main contact blade pressure | N | 300±30 | 450±50 | |||
| The contact blade distance | mm | ≥180 | ≥380 | |||
| Manual operating torque | Nm | ≤200 | ≤300 | |||
| Load switch vacuum arc extinguishing chamber assembly and adjustment technology | ||||||
| Open clearance between contacts | mm | 5±1 | 18±1 | |||
| Average opening speed | m/s | 1.1±0.2 | 1.6±0.2 | |||
| Three phase opening different period | ms | ≤5 | ≤5 | |||
| Three phase closing different period | ms | ≤5 | ≤5 | |||
| Distance between the charged body and the pole to ground | mm | >200 | >380 | |||
Q1: What is the main function of the 11KV Outdoor MV Isolating Vacuum Load Break Switch?
A1: It controls and isolates medium-voltage circuits safely, enabling load switching and system protection in distribution networks.
Q2: Can it operate outdoors?
A2: Yes, it is specifically designed for outdoor MV environments with corrosion and UV resistance.
Q3: How often does it require maintenance?
A3: The vacuum structure is maintenance-free under normal operating conditions.
Q4: What ensures the safety of operation?
A4: Vacuum arc extinction and visible isolation design ensure high operational safety.
Q5: Is customization available?
A5: Yes, Wzonpa provides customized configurations based on voltage, current, and installation requirements.
Address
No. 58 Binhainan Fourth Road, Economic Development Zone, Yueqing City, Wenzhou City, Zhejiang Province, China
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