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12KV Outdoor Disconnecting Switch is designed for reliable isolation of medium-voltage power systems under no-load conditions. It adopts a vertical single-break structure with stable mechanical performance and a clear opening distance, ensuring safe maintenance and inspection of distribution lines and substations.
This series of outdoor disconnectors is widely used in 10kV–15kV power networks. The structure integrates a rigid base frame, high-strength support insulators, and a knife-type conductive blade system. With a reinforced self-locking mechanism, it ensures stable operation even under strong wind, pollution, and temperature fluctuations.
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Project Name |
Parameter value |
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Rated voltage |
10KV |
15KV |
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Maximum operating voltage |
12Kv |
17.5KV |
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Rated insulation level |
1-minute power frequency withstand voltage |
42/48KV |
55/65KV |
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Lightning impulse withstand voltage |
75/85 KV |
105/120KV |
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Rated frequency |
50 Hz |
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Rated current |
200/400A |
630/1250A |
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4s rated short-time withstand current |
6.3/12.5kA |
20/31.5kA |
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Creepage distance |
300mm |
380mm |
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Mechanical life |
2000 times |
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Rated peak withstand current |
16/31.5kA |
50/80kA |
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The operating mechanism of this 12KV Outdoor Disconnecting Switch is based on a manual insulating hook stick. During operation, the hook stick engages the locking device, driving the rotating shaft and conductive blade. When opening, the self-locking mechanism is released, allowing the blade to rotate to a fully isolated position. During closing, the mechanism re-engages and locks automatically, ensuring stable contact pressure and safe electrical continuity when required.
The design ensures clear separation between live and isolated states, reducing operational risk and improving maintenance safety for distribution operators.
| Item | Our 12KV Outdoor Disconnecting Switch | Standard Market Product |
| Structure | Single-break vertical opening with reinforced locking system | Basic vertical structure without reinforced locking |
| Insulation performance | Anti-pollution insulators optimized for harsh environments | Standard porcelain insulation |
| Operation safety | Self-locking mechanism prevents accidental switching | Manual lock without secondary protection |
| Service life | 2000+ mechanical operations | Lower cycle endurance |
| Maintenance requirement | Low maintenance design with corrosion resistance | Frequent maintenance required |
1. What is the main function of this disconnect switch?
It is used to isolate electrical circuits in 10kV–15kV power systems when there is voltage but no load current, ensuring safe maintenance and inspection of equipment and transmission lines.
2. Can 12KV Outdoor Disconnecting Switch be operated under load?
No. This type of switch is designed only for no-load operation. Switching under load may damage the contacts and compromise system safety.
3. What environments is it suitable for?
The product is designed for outdoor substations, industrial distribution systems, and areas with high pollution levels, humidity, or temperature variations.
4. What operation methods are available?
It supports both manual operation using an insulating hook stick and optional motor-driven operation, depending on project requirements.
5. How does it ensure safe operation?
The internal self-locking mechanism and clear mechanical isolation structure help prevent accidental switching, improving operational safety and reliability.
6. What maintenance is required?
Routine inspection of contacts, insulation surfaces, and mechanical joints is recommended. The design reduces maintenance frequency under normal operating conditions.
Address
Jinlu Industrial Zone, Beibaixiang Town, Yueqing City, Wenzhou City, Zhejiang Province, China
