The contact box is not just an insulator; it is the core of switchgear safety. Combining 20 years of insulation manufacturing expertise, we use premium epoxy resin to ensure stability under harsh operating conditions.
Utilizing Automatic Pressure Gelation (APG) process for high density and zero air voids, significantly reducing partial discharge and extending insulation life.
Superior arc resistance and anti-tracking properties. Creepage distance meets requirements for high altitude and pollution levels (Level II/III).
High Glass Transition Temperature (Tg) ensures no softening or deformation under rated current heating, maintaining mechanical structural integrity.
Strictly complying with GB/T 4109 and IEC 60137 standards
| Parameter Item | Unit | 12kV Series | 24kV Series | 40.5kV Series |
|---|---|---|---|---|
| Rated Voltage | kV | 12 | 24 | 40.5 |
| PF Withstand Voltage | kV/1min | 42 | 65 | 95 |
| BIL (Lightning Impulse) | kV | 75 | 125 | 185 |
| Rated Current | A | 630-3150 | 630-2500 | 1250-2500 |
| Partial Discharge | pC | ≤ 5 | ≤ 5 | ≤ 10 |
Standardized design with selectable center distances (150mm / 210mm / 275mm) for seamless replacement.
Precise mounting holes for tulip contacts or static contact arms, ensuring low contact resistance and preventing overheating.
Built-in uniform electric field shielding mesh effectively improves field distribution and prevents corona discharge.
Yes, we offer full customization services. We can adjust the center distance, mounting holes, and copper contact sizes to fit your specific switchgear requirements. Please provide your drawings for a technical assessment.
Our standard products maintain a Partial Discharge level of ≤ 5pC at 1.1Un. This is achieved through our advanced APG vacuum casting process, ensuring void-free insulation suitable for high-end applications.
Absolutely. Quality is our priority. We can provide X-Ray inspection reports upon request to verify the internal structural integrity and absence of air pockets or cracks.
Latest industry news and maintenance guides for insulation components.
Fill out the form to get a competitive quote. Our engineering team is ready to support your custom requirements.
We guarantee a technical response or initial quotation within 24 hours.
Need a custom fit? Our engineers provide free CAD drawing modifications for your switchgear.
Experience in shipping to 50+ countries with professional packaging to prevent breakage.
We supply complete medium & high voltage solutions, including:
• Air Insulation Series
• Gas Insulation Series
• Switching Devices
• Instrument Transformers
