
Unwavering in our dedication to customers and delivering cutting-edge innovations,Bepto stands as your steadfast ally on the journey ahead.
FZW32-40.5 Vacuum Load Break Switch: 40.5kV 630A outdoor high voltage disconnect, 10000 mechanical cycles, 1250kVA transformer breaking, 1000m altitude, -25°C to +40°C, IV level pollution.
Advanced FZW32-40.5 Vacuum Load Break Switch Series: Premium outdoor AC high voltage disconnect vacuum load break switch designed for rated voltage 40.5kV, rated frequency 50Hz distribution systems, combining domestic mature load break switch production experience with overseas advanced technology, delivering 630A rated current, 630A active load breaking, 630A closed loop breaking, 10A cable charging breaking, 1250kVA no-load transformer breaking capacity, 20kA/4s short-time withstand, 50kA peak withstand, 50kA short-circuit closing, ≤95μΩ main loop resistance, 10000 mechanical life cycles, ≤15ms three-phase opening/closing asynchronism, 420±42N contact pressure, ≥360mm contact clearance.
High Voltage and Extreme Environment Ready: FZW32-40.5 incorporates motor operation (≌220V, ≤200W), ≤300Nm peak operating torque, operating at -25°C to +40°C (daily temperature ≤32K), altitudes ≤1000m, wind pressure ≤700Pa (34m/s), IV level air pollution (GB5582), earthquake intensity ≤8, providing reliable vacuum load break switching solution with high voltage disconnect for outdoor distribution systems.


| FZW32-40.5 Vacuum Load Break Switch Specifications | FZW32-40.5 | Unit |
|---|---|---|
| Model Number | FZW32-40.5 | – |
| Alternative Voltage | 36-40kV | – |
| Brand | Bepto Insulation Systems | – |
| Product Type | Outdoor AC High Voltage Disconnect Vacuum Load Break Switch | – |
| Core Technology | Domestic Mature Production Experience + Overseas Advanced Technology | – |
| Rated Voltage | 40.5 | kV |
| Rated Current | 630 | A |
| Rated Frequency | 50 | Hz |
| Rated Peak Withstand Current | 50 | kA |
| Rated Short-Time Withstand Current | 20 | kA |
| Rated Short-Time Withstand Current Duration | 4 | s |
| Rated Active Load Breaking Current | 630 | A |
| Rated Closed Loop Breaking Current | 630 | A |
| Rated Cable Charging Breaking Current | 10 | A |
| 5% Rated Active Load Breaking Current | 31.5 | A |
| Rated Breaking Capacity of No-Load Transformer | 1250 | kVA |
| Rated Short-Circuit Closing Current | 50 | kA |
| Major Loop Resistance | ≤95 | μΩ |
| 1min Power Frequency Withstand Voltage (Dry Test, Pole-to-Pole/Earth) | 95 | kV |
| 1min Power Frequency Withstand Voltage (Dry Test, Isolating Fracture) | 115 | kV |
| 1min Power Frequency Withstand Voltage (Wet Test, Pole-to-Pole/Earth) | 85 | kV |
| Lightning Impulse Withstand Voltage (Pole-to-Pole/Earth, Peak) | 185 | kV |
| Lightning Impulse Withstand Voltage (Isolating Fracture, Peak) | 215 | kV |
| Mechanical Life | 10000 | cycles |
| Three-Phase Opening/Closing Asynchronism | ≤15 | ms |
| Motor Voltage | ≌220 | V |
| Motor Power | ≤200 | W |
| Contact Knife Breaking Position Deviation | ≤5 | mm |
| Main Contact Knife Pressure | 420±42 | N |
| Clearance Between Contact Knives | ≥360 | mm |
| Rated Peak Operating Torque | ≤300 | Nm |
| Ambient Air Temperature | -25 to +40 | °C |
| Daily Temperature Difference | ≤32 | K |
| Altitude | ≤1000 | m |
| Wind Pressure | ≤700 (Wind Speed 34m/s) | Pa |
| Air Pollution Degree | IV Level (GB5582 4.1) | – |
| Seismic Intensity | ≤8 | – |
| Key Advantages | Domestic Mature Production + Overseas Advanced Technology, 10000 Mechanical Cycles, High Voltage Disconnect, 1250kVA Transformer Breaking, Motor Operation, IV Level Pollution, 1000m Altitude | – |
Bepto is a leading Chinese company in electrical insulation, focused on developing advanced solutions for future power systems. We support transmission and distribution safety and growth, with long-term partners including State Grid, ABB, Schneider, Siemens, and GE. Our services reach clients in over 22 countries.

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Bepto focuses on the global market and provides our clients with products suitable for the local market:
Unwavering in our dedication to customers and delivering cutting-edge innovations,Bepto stands as your steadfast ally on the journey ahead.