630A 35kV 4 Position Oil Loadbreak Switch
The 630A 35kV 4 Position Oil Loadbreak Switch is a high-performance medium-voltage switching device engineered for oil-filled transformer applications and compact electrical distribution systems. Featuring a four-position operating structure, the switch allows flexible circuit management and enhanced transformer operational control in utility and industrial environments.
Features
Four-Position Operating Function
The switch supports multiple operating positions for improved circuit flexibility and transformer maintenance convenience. Typical positions may include: ON; OFF; GROUND; TEST / ISOLATION.
Reliable 35kV Insulation System
• Designed for medium-voltage power distribution
• Stable dielectric performance in oil environments
• Suitable for demanding utility applications
630A Continuous Current Rating
• Supports high-load electrical networks
• Excellent current transfer capability
• Stable thermal performance during operation
Oil Immersed Switching Technology
• Effective arc suppression during switching
• Improved contact protection
• Enhanced electrical endurance
Heavy-Duty Mechanical Design
• Strong operating mechanism
• Smooth switching movement
• Long mechanical service life
Technical Parameters
|
Item |
Value |
|
Rated voltage |
38kV |
|
Rated current |
630A |
|
Power Frequency |
60Hz |
|
Rated thermostable current |
25kA / 4 seconds |
|
Rated dynamic current |
63kA |
|
Impulse withstand voltage |
|
|
Ground between phase across open contacts |
200kV 215kV |
|
Power frequency withstand (1 min) |
|
|
Ground between phase across open contacts |
95kV 110kV |
|
Contact mechanical life |
≥2000 times |
Application
The 4 position oil loadbreak switch is widely used in:
- Pad-mounted transformers
- Ring main distribution systems
- Compact substations
- Industrial transformer stations
- Utility medium-voltage networks
- Renewable energy distribution projects
Advantages
Flexible Circuit Management
The four-position structure allows more operational flexibility for isolation, grounding, and maintenance procedures.
01
Improved Distribution Safety
Designed to enhance transformer operational security and reduce switching risks in medium-voltage systems.
02
Compact Equipment Integration
Suitable for transformer manufacturers requiring optimized internal layouts and efficient use of enclosure space.
03
Durable Long-Term Operation
Oil insulation and reinforced contact structures contribute to reliable switching performance over extended service periods.
04
Built For Modern Transformer Applications
The product design incorporates practical medium-voltage engineering concepts inspired by solutions from Eaton and transformer system technologies related to Chardon Transformers and Maddox Transformer.
Core design priorities include:
Stable switching reliability
Enhanced operator safety
Efficient transformer integration
Reliable insulation coordination
Reduced maintenance requirements
OEM Manufacturing Support
We provide flexible OEM and project-based manufacturing services, including:
Customized installation dimensions
Different shaft and handle configurations
Terminal structure modifications
Logo and private branding services
Technical support for transformer integration
Installation Recommendations
1
Install within approved oil-filled transformer tanks
2
Ensure insulation oil quality meets operational requirements
3
Operate according to medium-voltage safety standards
4
Routine maintenance inspections are recommended for moving components
FAQ
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