ZW32-12 Outdoor Pole-Mounted Vacuum Breaker
10 kV feeder workhorse for urban and rural grids: 20/25 kA breaking with 30 full-fault operations, 10,000-cycle mechanical life, optional built-in disconnector and CT, −45…+40 °C service.
- Vacuum breaker · outdoor · design serial No. · rated voltage (kV) · G with disconnector / blank without · spri
A cleaner, more reliable approach to MV switching
The HP-ELS series replaces SF₆ with environmentally friendly insulating media while keeping the proven safety and performance utilities expect from gas-insulated switchgear.
Product Overview
The ZW32-12 outdoor pole-mounted vacuum circuit breaker is three-phase AC 50 Hz outdoor switchgear, mainly comprising pole columns, a spring operating mechanism, an enclosure and a control unit. Widely used in 10 kV urban and rural distribution grids, it switches load, short-circuit and overload currents and provides protection in similar applications.
Technical specifications
Headline ratings at a glance, followed by the full technical data sheet. Exact values are confirmed per project configuration.
| Parameter | Value |
|---|---|
| Rated voltage | 12 kV |
| 1 min PF withstand (ph & earth / break) | 42 / 48 kV |
| Lightning impulse (ph & earth / break) | 75 / 85 kV |
| Rated current | 630 / 1250 A |
| Short-circuit breaking current / times | 20·25 kA / 30 ops |
| Making & peak withstand current | 50 / 63 kA |
| Short-time withstand / duration | 20·25 kA / 4 s |
| Operating sequence | O–0.3s–CO–180s–CO |
| Mechanical life / operating voltage | 10,000 ops · AC/DC 220/110 V |
| Contact wear allowance / phase spacing | 3 mm / 340 mm |
Reading the model designation
Generated automatically from each product's model code.
Overall dimensions
Cabinet height, width and depth options. Selection depends on cable type and incoming / outgoing configuration.
| Item | Dimensions (mm) | Scope of application |
|---|---|---|
| Phase spacing | 340 | mm |
| Overall width W | 950 | 630A w/ CT & disconnector (mm) |
| Height H | 720 | Body (mm) |
| Base width | 750 | mm |
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