ZW32-12 Pole-Mounted Outdoor High-Voltage Vacuum Circuit BreakerIntelligent Medium-Voltage Breakers
The ZW32-12 is a leading domestic, pillar-type outdoor vacuum circuit breaker compliant with GB/T1984 and DL/T403. When equipped with CT, PT, and FTU devices, it gains protection and "four remote" functions for distribution automation.
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It is used in 12kV overhead line grids in urban, rural, mining, and railway networks. Its three-phase separated column structure, with components sealed inside insulating sleeves and a shell, makes it robust, weatherproof, and suitable for harsh environments.
Core Advantages & Features
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Phase Fault IsolationThree-phase separated column structure prevents a single-phase fault from causing a three-phase short circuit.
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Weather-Resistant InsulationEpoxy resin solid-silicone rubber insulation, resistant to temperature extremes, UV, and aging.
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Miniature Spring OperationHigh-performance miniaturized spring mechanism, long life, electric/manual operations.
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Sealed Environmental ProtectionFully sealed structure with the mechanism inside the box, offering excellent environmental protection (three-proof).
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Integrated Protection FunctionsCan be equipped with CTs, PTs, and FTUs for protection, reclosing, and remote communication functions.
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Technical Parameters
| Basic Parameters | |
|---|---|
| Rated voltage | 12 kV |
| Rated frequency | 50 Hz |
| Rated current | 630 A, 1250 A |
| Rated short-circuit breaking current | 20 kA, 25 kA |
| Rated short-circuit making current (peak) | 50 kA, 63 kA |
| Rated short-time withstand current 4s | 20 kA, 25 kA |
| Rated peak withstand current (peak) | 50 kA, 63 kA |
| Mechanical life | 10000 times |
| Rated current breaking operations | 10000 times |
| Rated short-circuit breaking current operations | 30 times |
| Power frequency withstand voltage (1min) phase-to-phase, phase-to-earth/isolation (dry test) | 42/48 kV |
| Power frequency withstand voltage (1min) phase-to-phase, phase-to-earth (wet test) | 34 kV |
| Lightning impulse withstand voltage (peak) phase-to-phase, phase-to-earth/isolation | 75/85 kV |
Product Documents
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Product Brochure
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ZW32-12 Outdoor High-Voltae AC Vacuum Circuit-Breaker
2025-09-02
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