
Unwavering in our dedication to customers and delivering cutting-edge innovations,Bepto stands as your steadfast ally on the journey ahead.
BE70V12 Solid Insulated RMU Core Unit: SF6-free 12kV 630A/1250A ring main unit, APG epoxy encapsulation, 20kA/25kA breaking, 10,000 operations, ≤120μΩ resistance, integrated VCB design, IP4X.
Advanced BE70V12 Solid Insulated RMU Core Unit: Premium BE70V12 model featuring integrated design combining vacuum circuit breaker, load switches, disconnector, and grounding switch for SF6-free 12kV 630A/1250A ring main unit applications, delivering exceptional 20kA/25kA short-circuit breaking capacity with 50kA/63kA peak withstand current and 4s rated duration, utilizing APG (Automatic Pressure Gelation) epoxy resin encapsulation technology for superior solid insulation, featuring ≤120μΩ main circuit resistance and ≥10,000 operations mechanical endurance, with 85kV lightning impulse across vacuum interrupter and ≤10pC partial discharge at 1.2Ur, designed with IP4X cabinet protection.
Modular Distribution Network Ready: BE70V12 incorporates front-rear compact layout with motorized disconnector operation for distribution automation, featuring 20kA/25kA AFLR Class 0.5s internal arc fault protection and 630A closed-loop breaking current, designed with high-creepage pole design and European standardized interfaces, providing reliable solid-insulated RMU solution for substations, industrial facilities, utilities, and automated distribution networks requiring maintenance-friendly SF6-free operation with exceptional insulation performance and extended lifespan.


| BE70V12 Solid Insulated RMU Core Unit Specifications | Technical Parameters | Unit |
|---|---|---|
| Model Number | BE70V12 | – |
| Brand | Bepto Insulation Systems | – |
| Product Type | Solid Insulated Ring Main Unit (RMU) Core Unit (SF6-Free) | – |
| Design Type | Integrated VCB + Load Switch + Disconnector + Grounding Switch | – |
| Encapsulation Technology | APG (Automatic Pressure Gelation) Epoxy Resin | – |
| Rated Voltage | 12 | kV |
| Rated Current | 630 / 1250 | A |
| Rated Frequency | 50 | Hz |
| Rated Short-Circuit Breaking Current | 20 / 25 | kA |
| Rated Short-Circuit Making Current | 50 / 63 | kA |
| Rated Short-Time Withstand Current | 20 / 25 | kA |
| Rated Peak Withstand Current | 50 / 63 | kA |
| Rated Short-Time Withstand Current Duration | 4 | s |
| Power Frequency Withstand Voltage (Phase-to-Phase/Phase-to-Ground) | 42 | kV |
| Lightning Impulse Withstand Voltage (Phase-to-Phase/Phase-to-Ground) | 75 | kV |
| Power Frequency Withstand Voltage (Vacuum Interrupter/Isolation Gap) | 48 | kV |
| Lightning Impulse Withstand Voltage (Vacuum Interrupter/Isolation Gap) | 85 | kV |
| Power Frequency Withstand Voltage (Control and Auxiliary Circuits) | 2 | kV |
| Rated Closed-Loop Breaking Current | 630 | A |
| Internal Arc Fault Test (AFLR Class) | 20 / 25 kA / 0.5s | – |
| Partial Discharge (at 1.2Ur) | ≤10 | pC |
| Main Circuit Resistance | ≤120 | μΩ |
| Mechanical Endurance (Circuit Breaker/Load Switch) | ≥10,000 | Operations |
| Mechanical Endurance (Disconnector/Grounding Switch) | 3,000 | Operations |
| Ingress Protection (IP) Rating (Cabinet) | IP4X | – |
| Insulation Technology | Solid Insulation – APG Epoxy Resin (SF6-Free) | – |
| Glass Transition Temperature | >110°C | – |
| Application | SF6-Free Solid Insulated Ring Main Units, Distribution Automation | – |
Bepto is a leading Chinese company in electrical insulation, focused on developing advanced solutions for future power systems. We support transmission and distribution safety and growth, with long-term partners including State Grid, ABB, Schneider, Siemens, and GE. Our services reach clients in over 22 countries.

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Bepto focuses on the global market and provides our clients with products suitable for the local market:
Unwavering in our dedication to customers and delivering cutting-edge innovations,Bepto stands as your steadfast ally on the journey ahead.