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Isolation switch is a switch device mainly used for isolating power supply, switching operation, connecting and cutting off small current circuits. It should be noted that it does not have arc extinguishing function, so it can only open and close circuits without load current, and cannot cut off load current and short-circuit current.
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The 24kV Distribution Type Disconnect Switch is designed for outdoor medium-voltage networks to provide safe line isolation during maintenance, fault clearing, or sectionalizing operations. With strong insulation capability, weatherproof materials, and corrosion-resistant construction, the 24kV disconnect switch ensures long-term reliability on pole-mounted distribution systems. Its simple manual operating mechanism allows operators to safely isolate 24kV circuits, supporting stable and efficient grid operation.
• High insulation and dielectric strength suitable for 24kV systems.
• Weatherproof structure for reliable outdoor service.
• Hot-dip galvanized or stainless steel hardware with strong corrosion resistance.
• Smooth manual operation with stable open/close positions.
• Suitable for sectionalizing overhead distribution lines.
• Long mechanical life and low maintenance requirements.
1. 24kV Overhead Distribution Circuits
How to Apply:
• Mount the 24kV distribution type disconnect switch onto the pole crossarm.
• Connect incoming/outgoing conductors to the terminals.
• Use an insulated operating rod to open/close the switch during line isolation.
2. Grid Sectionalizing Points
How to Apply:
• Install at power line intersections to divide feeders.
• Operators manually open the 24kV disconnect switch during faults or load transfer.
3. Pole-Mounted Transformer Installations
How to Apply:
• Used above transformers for 24kV incoming line control.
• Provide a visible isolation point before transformer maintenance.
4. Industrial Medium Voltage Power Networks
How to Apply:
• Integrated into factory overhead MV distribution systems.
• Ensure grounding is established before operating the isolator.
| Technical Specification | ||||||||
| Kv | Amperes | (kA/Is) | Dimensions | |||||
| Nominal voltage | Maximum voltage | BIL | Nominal Current | Transient Current | A | B | C | D |
| (mm) | ||||||||
| 13.8 | 15 | 95 | 200/630 | 16 | 305 | 270 | 580 | 186 |
| 630 | 25 | 305 | 313 | 595 | 230 | |||
| 110 | 200/630 | 16 | 381 | 270 | 650 | 186 | ||
| 630 | 25 | 381 | 313 | 670 | 230 | |||
| 24.2 | 27 | 125 | 200/630 | 16 | 381 | 310 | 650 | 228 |
| 630 | 25 | 381 | 340 | 670 | 260 | |||
| 34.5 | 38 | 150 | 630 | 25 | 381 | 368 | 670 | 290 |
| 170 | 630 | 25 | 381 | 400 | 670 | 316 | ||
The 24kV Distribution Type Disconnect Switch is tested for:
• Mechanical endurance
• Dielectric strength & insulation resistance
• Corrosion resistance per ASTM A153 (for galvanized hardware)
• Temperature and humidity aging
• Contact performance and operating force stability
Every unit complies with IEC & ANSI medium-voltage switching standards.
Q1: Is the 24kV disconnect switch suitable for long-term outdoor use?
A1: Yes, the weatherproof and corrosion-resistant construction ensures durability.
Q2: Can it be operated manually from the ground?
A2: Yes, an insulated operating rod allows safe manual operation.
Q3: Does it support standard pole-mounted installation?
A3: Yes, it fits typical overhead distribution structures.
