EvoPacT HVX is Schneider Electric’s next-generation digital-native medium-voltage vacuum circuit breaker, with 12 kV and 24 kV versions described in the supplied product-page content. It combines vacuum switching with optional digital monitoring modules and sensors for breaker-health monitoring, contact-wear visibility and remote operation. Listed short-circuit breaking capacities are 25, 31.5 and 40 kA, depending on voltage class and model.
The Schneider Electric EvoPacT HVX Medium-Voltage Vacuum Circuit Breaker (VCB) is a next-generation digital circuit breaker designed for medium-voltage power distribution systems and air-insulated switchgear applications up to 36 kV. Using vacuum interruption technology and SF₆-free design, the series provides reliable switching and short-circuit protection for industrial and utility electrical networks. With embedded condition-monitoring sensors, digital connectivity and flexible installation configurations, EvoPacT HVX combines electrical protection with intelligent equipment monitoring to improve operational reliability, extend service life and support predictive maintenance.
The EvoPacT HVX series uses vacuum interrupters to extinguish electrical arcs during circuit interruption, providing reliable switching and short-circuit fault interruption in medium-voltage systems. Its SF₆-free design eliminates the need for sulfur hexafluoride gas in the circuit breaker, supporting more sustainable power distribution solutions. The optimized operating mechanism and vacuum interruption structure are designed for repeated switching operations and long-term service. Depending on the voltage rating, the circuit breaker supports up to 50,000 mechanical and electrical operations at 12 kV and 17.5 kV, and up to 30,000 operations at 24 kV.
A key feature of EvoPacT HVX is its natively integrated sensing technology, which enables continuous monitoring of important circuit breaker components and operating conditions. Dedicated sensors can monitor power connection temperatures, vacuum interrupter contact erosion, operating mechanism speed and circuit breaker positioning. These monitoring capabilities help identify abnormal conditions, detect potential equipment issues and support condition-based maintenance. By providing better visibility into circuit breaker health, the system helps reduce unexpected downtime and improve maintenance planning.
The EvoPacT HVX series supports digital connectivity through Schneider Electric's Active and Active Plus configurations. Depending on the selected connectivity level, functions can include local HMI operation, remote monitoring, thermal monitoring and connection to edge or cloud-based platforms. Integration with Schneider Electric EcoStruxure solutions enables access to equipment information and operating data for more efficient asset management. Compatible remote operation arrangements also allow operators to perform selected switching and control activities from outside the arc-flash zone, helping reduce operational exposure.
Designed for medium-voltage air-insulated switchgear applications, EvoPacT HVX is available in fixed and withdrawable configurations, depending on the selected model and switchgear platform. Its compact construction and standardized interfaces support integration into compatible medium-voltage switchgear assemblies. Mechanical and electrical interlocking arrangements help prevent incorrect operating sequences, while compatible operating mechanisms, auxiliary circuits and monitoring accessories provide flexibility for different installation and control requirements.
The EvoPacT HVX Medium-Voltage VCB is suitable for switching and protection applications in industrial and utility power distribution networks. Typical applications include:
Power Distribution Substations: Incoming and outgoing feeder protection in medium-voltage distribution networks.
Power Generation: Switching and protection for power plant distribution systems.
Oil and Gas: Medium-voltage circuit protection in processing facilities and industrial electrical networks.
Mining and Metals: Electrical distribution protection for mining operations and metal processing plants.
Chemical Industry: Switching and protection for industrial process power systems.
Transportation and Infrastructure: Medium-voltage distribution in transportation facilities and critical infrastructure.
Commercial and Critical Facilities: Electrical distribution protection for data centers, hospitals and large commercial installations.
The EvoPacT HVX portfolio includes multiple voltage and installation configurations to accommodate different medium-voltage switchgear requirements. Key selection parameters include:
Rated Voltage: 12 kV, 17.5 kV and 24 kV configurations, with a dedicated 36 kV product variant.
Rated Current: Available current ratings depend on the voltage class and specific circuit breaker model.
Short-Circuit Breaking Capacity: Varies according to the selected voltage rating and product configuration.
Number of Poles: Three-pole (3P).
Interruption Technology: Vacuum interrupter.
Insulation Design: SF₆-free circuit breaker technology.
Installation Type: Fixed and withdrawable configurations, depending on the model.
Digital Monitoring: Integrated sensing for thermal conditions, contact erosion, operating mechanism performance and circuit breaker positioning.
Connectivity: Active and Active Plus configurations with different monitoring and connectivity capabilities.
Operating Life: Up to 50,000 operations at 12/17.5 kV and up to 30,000 operations at 24 kV, according to the specified operating conditions.
| Item | Specification |
| Series | EvoPacT HVX medium-voltage vacuum circuit breaker |
| Rated Voltage | 12 kV and 24 kV |
| Rated Frequency | 50 / 60 Hz |
| Short-Circuit Breaking Capacity | 12 kV: 25 / 31.5 / 40 kA; 24 kV: 25 / 31.5 kA |
| Rated Current | 12 kV: 630–4000 A by model; 24 kV: 630 A / 1250 A listed in the supplied page |
| Power-Frequency Withstand | 12 kV: 42 kV phase-to-earth / 48 kV across open gap; 24 kV: 65 kV / 79 kV |
| Lightning Impulse Withstand | 12 kV: 75 kV phase-to-earth / 85 kV across open gap; 24 kV: 125 kV / 145 kV |
| Short-Time Withstand | 25 / 31.5 / 40 kA for 4 s, according to applicable 12 kV version |
| Peak Withstand | 63 / 80 / 125 kA by applicable rating |
| Operating Sequence | O – 0.3 s – CO – 15 s – CO |
| Breaker Class | C2-E2-M2 |
| Mechanical / Electrical Life | Up to 50,000 operations for applicable ≤1250 A / ≤31.5 kA versions; 30,000 operations for specified higher ratings |
| Ambient / Altitude | −25°C to +40°C; 12 kV altitude listed to 2300 m and 24 kV to 2000 m with switchgear insulation enhancement |
| Standards | GB/T 1984-2014, DL/T 402-2016, IEC 62271-100:2021 and IEEE C37.04 / C37.06 |
| Voltage Class | Breaking Capacity | Rated Current Range | Insulation Level | Selection Notes |
| 12 kV | 25 kA | 630–4000 A* | 42 / 75 kV (power-frequency / impulse, phase-to-earth) | Confirm current availability by frame and breaker configuration |
| 12 kV | 31.5 kA | 630–4000 A* | 42 / 75 kV | 1.1× margin versions are listed for applicable currents |
| 12 kV | 40 kA | Model-dependent; up to 4000 A* | 42 / 75 kV | Mechanical/electrical life varies with current and breaking rating |
| 24 kV | 25 / 31.5 kA | 630 A / 1250 A listed | 65 / 125 kV | Open-gap withstand values are 79 / 145 kV |
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