Pole Mounted Circuit Breaker
ZW32-12MG/630 12kV Permanent-Magnet Outdoor Vacuum Circuit Breaker
Model ZW32-12MG/630
CANGO is a permanent magnet vacuum circuit breaker supplier for 12kV pole-mounted distribution projects. Send rated data and drawings for quotation.
Share your rated data, quantity and project requirements.
Project configuration reviewTechnical documentation support
Product Overview
ZW32-12MG/630 is a 12 kV, three-phase 50 Hz permanent-magnet outdoor vacuum circuit breaker for opening and closing load, overload, and short-circuit currents. It is used in substations, industrial and mining distribution systems, and rural networks requiring frequent outdoor switching.
Its compact, lightweight construction is designed for resistance to condensation and reduced maintenance in demanding climates and polluted environments. The permanent-magnet operating mechanism provides holding force in both open and closed positions, reducing mechanical parts and shortening the transmission chain to support operating reliability and mechanical life.
Utilities, EPC contractors, electrical distributors, and project buyers should provide the short-circuit level, control and protection requirements, pole arrangement, service conditions, quantity, and destination. CANGO reviews the required measurement and protection control box, accessories, and installation drawing before quotation.
Model and Meaning
- ZW: outdoor vacuum circuit breaker
- 32: design sequence number
- 12: rated voltage, kV
- 630: rated current, A
- 20: rated short-circuit breaking current, kA
- M: permanent-magnet operating mechanism
Technical Specifications
ZW32-12MG/630 Technical Parameter Table
Review the ZW32-12MG/630 values, units, rated data, and project requirements before quotation.
| Item | Unit | Data | ||
|---|---|---|---|---|
| Rated voltage | kV | 12 | ||
| Rated insulation level | 1 min power-frequency withstand voltage | Dry: to earth / phase-to-phase / across open contacts | kV | 42 / 42 / 48 |
| Wet: external insulation to earth | kV | 34 | ||
| Lightning impulse withstand voltage (peak) | To earth / phase-to-phase / across open contacts | kV | 75 / 75 / 85 | |
| Rated frequency | Hz | 50 | ||
| Rated current | A | 630 | ||
| Rated short-circuit breaking current | kA | 12.5 / 16 / 20 | ||
| Rated short-circuit making current (peak) | kA | 31.5 / 40 / 50 | ||
| Rated peak withstand current | kA | 31.5 / 40 / 50 | ||
| 4 s rated short-time withstand current | kA | 20 | ||
| Rated operating sequence | O-0.3s-CO-180s-CO | |||
| Closing time / opening time | ms | 25-50 / 15-50 | ||
| Rated short-circuit breaking operations | operations | 30 | ||
| Mechanical endurance | operations | 10000 | ||
| 1 min power-frequency withstand voltage of control and auxiliary circuits | V | 2000 | ||
| Rated operating voltage and auxiliary-circuit rated voltage | V | DC 220 / AC 220 | ||
| Overcurrent release | Rated current | A | 5 | |
| Tripping-current accuracy | % | +/-10 | ||
Installation Dimensions / Drawing
Applications
ZW32-12MG/630 is mainly selected for substation feeder protection and control and industrial and mining distribution networks. The final application should match the confirmed permanent-magnet outdoor breaker with pole-mounted control and protection arrangement, rated data, and site installation conditions.
- Substation feeder protection and control
- Industrial and mining distribution networks
- Rural distribution systems with frequent operation
- Single-pole or double-pole outdoor feeder installations
Ordering Instructions / Information Required for Quotation
ForZW32-12MG/630, send short-circuit level, permanent-magnet control, protection and measurement functions, auxiliary supply, pole arrangement, and site conditions, quantity, destination, and the expected delivery schedule. The engineering review will be based on the selected permanent-magnet outdoor breaker with pole-mounted control and protection arrangement and project drawing.
ORDERING INSTRUCTIONS
- Confirm rated current and the required rated short-circuit breaking current.
- Provide permanent-magnet control, protection, measurement, communication, and auxiliary-power requirements.
- Provide the single-pole or double-pole installation arrangement and state whether a voltage transformer and control box are required.
- Provide site conditions, quantity, destination country, applicable standard, and delivery requirements.
EXPLORE THE RANGE
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