Precision-engineered Epoxy Resin Cylinders designed to house Vacuum Interrupters (VI) in 12kV & 24kV VS1 circuit breakers. Manufactured via APG process to ensure high dielectric strength and robust mechanical support against electrodynamic forces.
Not just a plastic tube. It’s a critical safety barrier engineered for high-stress environments.
Internal umbrella skirts are scientifically designed to extend the creepage distance, effectively preventing surface flashover even in high-humidity environments.
The APG epoxy structure is reinforced to withstand the massive opening/closing impact forces of the vacuum circuit breaker (up to 30,000 operations).
Designed with standard mounting interfaces to perfectly fit ZN63 (VS1) mechanisms and accommodate Vacuum Interrupters from brands like Siemens, Eaton, and Baoguang.
| Rated Voltage | 12 kV / 24 kV |
| Material | Epoxy Resin (APG Process) |
| Creepage Distance | ≥ 240mm (12kV) / ≥ 480mm (24kV) |
| Tensile Strength | > 75 MPa |
| Bending Strength | > 110 MPa |
| Applicable Standard | IEC 60694, GB/T 3906 |
| Working Temperature | -25°C to +40°C |
Need specific mounting hole dimensions or VI fitting sizes?
Vacuum mixing & pressure gelation to eliminate voids.
Precision temperature control for max mechanical strength.
Detecting internal cracks or insert misalignments.
Power frequency withstand voltage test.
Our standard VS1 cylinders are compatible with most standard IEC vacuum interrupters, including domestic brands (Baoguang, Xuguang) and international brands (Siemens, Eaton) with standard dimensions. We also offer custom mounting blocks.
Yes. While standard VS1 mechanisms have fixed pole distances (e.g., 210mm, 275mm), we can modify the top and bottom mounting inserts of the cylinder to match your specific chassis or retrofit project.
Expand your knowledge about switchgear insulation and maintenance.
Get specific technical drawings, 3D models, or a competitive quote for bulk orders. Our engineers typically respond within 24 hours.
Strict adherence to IEC 60694 standards
Safe packaging for international logistics
We supply complete medium & high voltage solutions, including:
• Air Insulation Series
• Gas Insulation Series
• Switching Devices
• Instrument Transformers
