Reliable Isolation
Designed for medium-voltage outdoor applications, this single-phase AC 50/60Hz disconnect switch effectively isolates or connects the power supply in the absence of load current, ensuring safe operation in distribution networks.
Robust Construction
Constructed with durable ceramic material, the switch is capable of operating under severe environmental conditions, including breaking and closing under 10mm-thick icing, and is resistant to dust, water, and pollution.
Compact and lightweight design simplifies transportation, installation, and handling, making it ideal for confined installation spaces.
The mounting dimensions of the disconnect switch and operating mechanism are standardized for easy interchangeability, enhancing maintenance efficiency and reducing downtime.
Versatile Installation
Designed for flexible deployment, it can be mounted on concrete poles or iron frames, supporting both horizontal and vertical installation to accommodate various system requirements.
Compatible with different voltage levels (15/25.8/38 kV), ensuring broad applicability across power distribution networks.
Low Maintenance & Cost Efficiency
With a simple mechanical structure, the disconnect switch requires minimal maintenance, reducing operational costs.
High mechanical durability with a tested lifespan of ≥3,000 operation cycles, ensuring long-term reliable performance.
| Parameter | Unit | Value | |||
| System voltage | kV | 15 | 25.8 | 38 | |
| 1min power frequency withstand voltage | Relative to ground | kV | 50 | 70 | 95 |
| Contact gap | kV | 55 | 77 | 105 | |
| Lightning impulse withstand voltage | Relative to ground | kV | 125 | 150 | 200 |
| Contact gap | kV | 140 | 165 | 220 | |
| Rated frequency | Hz | 60 | |||
| Rated current | A | 630 | |||
| Rated short-time withstand current and duration | kA/ S | 25/1 | |||
| Rated peak withstand current | kA | 65 | |||
| Main circuit resistance <300 μΩ | μΩ | ≤120 | |||
| External insulation creepage distance | mm | ≥388 | ≥675 | ≥950 | |
| Mechanical stability | Cycle | ≥3000 | |||
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