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ZW32-12M
Fenarro
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It is widely used in urban power grids, rural distribution networks, and outdoor substations as a sectionalizing or feeder switch. Its built-in protection, monitoring, and communication functions meet the requirements of distribution automation (DA) and feeder terminal unit (FTU/TTU) applications.
Suitable for 12kV urban and rural distribution networks
Ideal for feeder sectionalizing and interconnection switching
Reliable choice for outdoor substations and pole-mounted installations
Provides effective fault detection, isolation, and automatic restoration
Ensures stable power supply under harsh environments and frequent operation conditions
Permanent Magnet Mechanism – Simple structure, fewer components, high reliability, fast operation (<10ms).
Maintenance-Free Design – No SF6 or oil, eco-friendly and stable for long-term use.
Advanced Protection – Integrated CTs, zero-sequence CT, and voltage sensors for real-time monitoring.
Long Service Life – Mechanical endurance up to 30,000 operations.
Compact & Lightweight – Easy pole-mounted installation with space-saving design.
Smart Control – Remote monitoring, fault detection, and communication capabilities for distribution automation.
Sealed Structure – Effective against corrosion, moisture, and outdoor weathering.
| Serial No. | Item | Unit | Numerical Value | ||
|---|---|---|---|---|---|
| 1 | Rated Voltage | kV | 12 | ||
| 2 | Rated Current | A | 630, 1250 | ||
| 3 | Rated Frequency | Hz | 50 | ||
| 4 | \multirow{2}{*}{\makecell{Power Frequency Withstand Voltage (1min)}} | Dry - type (Phase - to - phase, Phase - to - ground / Across Contacts) | kV | 42/48 | |
| Wet - type (Phase - to - ground, External Insulation) | kV | 34 | |||
| 5 | Lightning Impulse Withstand Current (Peak Value) (Phase - to - phase, Phase - to - ground / Across Contacts) | kV | 75/85 | ||
| 6 | Rated Short - circuit Breaking Current | kA | 20 | 25 | |
| 7 | Rated Short - circuit Making Current (Peak Value) | kA | 50 | 63 | |
| 8 | Rated Peak Withstand Current | kA | 50 | 63 | |
| 9 | 4s Short - time Withstand Current | kA | 20 | 25 | |
| 10 | Rated Operating Cycle | - | Open - 0.3s Close & Separate - 180s Close & Open | ||
| 11 | Number of Rated Short - circuit Current Breaking Operations | times | 30 | ||
| 12 | Mechanical Life | times | 30000 | ||
| 13 | Power Frequency Withstand Voltage of Secondary Circuit (1min) | kV | 2 |
Q1: What makes the ZW32-12M different from traditional vacuum circuit breakers?
A1: It uses a permanent magnet operating mechanism, which has fewer moving parts compared to spring mechanisms, providing higher reliability and reduced maintenance.
Q2: Can this breaker be used in harsh outdoor environments?
A2: Yes, the sealed design and moisture-proof insulation make it suitable for extreme weather, high humidity, and polluted areas.
Q3: Is it suitable for smart grid applications?
A3: Absolutely. The ZW32-12M supports real-time monitoring, communication, and automation, making it ideal for distribution automation and smart grid integration.
Q4: How often does it require maintenance?
A4: The breaker is designed to be virtually maintenance-free. Only batteries or capacitors in the control unit may need replacement every 5–6 years.
Q5: What installation method is recommended?
A5: It is designed for pole-mounted outdoor installation, but can also be adapted for substations and feeder line applications.
