Medium Voltage Switchgear Product Comparison
Compare insulation technology, voltage range, current capacity, footprint and project fit before requesting a technical proposal. Final selection should follow the project SLD, protection philosophy and local utility requirements.
Quick Product Family Comparison
| Product family | Typical voltage coverage | Rated current | Best suited for |
|---|---|---|---|
| QCL-12 / QCL-24 GIS | Up to 12 / 24 kV | 630 / 1250 A | Compact substations, utilities, industrial and renewable projects |
| QCL-40.5 GIS | 40.5 kV class | 630 / 1250 / 2500 / 3150 A | Higher-voltage distribution, utilities and large industrial systems |
| Environmental Gas RMU | Up to 24 kV | 630 / 1250 A | SF₆-reduction projects and compact distribution networks |
| QCG-12 Solid-Insulated RMU | Up to 24 kV | 630 / 1250 A | Compact, sealed and environmentally focused applications |
| XGN15-12 Metal-Enclosed Switchgear | 12 kV class | Project dependent | Secondary distribution and indoor substations |
| QCDL Vacuum Circuit Breaker | Medium-voltage range | Configuration dependent | Protection and switching in MV panels |
| FLN36 SF6 Load Break Switch | Medium-voltage range | Configuration dependent | RMU and distribution switching applications |
QCL-40.5 breaking-current options: 20 / 25 / 31.5 kA. Ratings and panel configurations must be confirmed against the final system design.
AIS vs GIS vs Solid-Insulated
| Decision factor | AIS | GIS / gas-insulated | Solid-insulated |
|---|---|---|---|
| Footprint | Generally larger | Compact | Compact |
| Environmental isolation | More exposed to ambient conditions | Primary circuit sealed in gas tank | Primary circuit encapsulated in solid insulation |
| Maintenance approach | Accessible components | Reduced primary-circuit exposure | Reduced gas-management requirements |
| Project fit | Conventional substations with available space | Space-limited, harsh-environment and prefab projects | Projects prioritizing sealed insulation and SF₆ reduction |
Choose by Project Priority
Minimum Footprint
Start with QCL GIS, environmental gas RMU or QCG solid-insulated RMU. Confirm cable access and future extension needs.
High Current at 40.5 kV
Evaluate QCL-40.5 with current coverage through 3150 A and breaking-current options up to 31.5 kA.
Panel Integration
Evaluate QCDL vacuum circuit breakers and FLN36 load break switches according to the panel scheme and mechanism requirements.
Information Required for an Accurate Comparison
System
Rated voltage, frequency, neutral earthing method and short-circuit level.
Configuration
SLD, feeder quantity, incomer/bus coupler arrangement and protection requirements.
Site
Indoor/outdoor location, altitude, ambient temperature, humidity and applicable standards.
Need a Side-by-Side Technical Proposal?
Send the SLD and project specification. We will shortlist suitable product families and identify the points that need engineering confirmation.
Request Product ComparisonUse Product SelectorDetailed Comparison Guides
GIS vs AIS Switchgear
Compare insulation, footprint, environment, maintenance and project selection.
Air-Insulated vs Gas-Insulated RMU
Choose the RMU architecture for the room, environment and lifecycle strategy.
RMU vs MV Switchgear
Understand scope, applications and configuration differences.
SF6 vs SF6-Free RMU
Compare established and alternative insulation technologies without one-sided claims.