Medium Voltage Switchgear
Indoor metal-enclosed switchgear for 12 / 24 / 40.5 kV distribution — air-insulated metal-clad withdrawable cabinets for primary distribution and protection, plus gas- and solid-insulated ring main units (RMU) for compact secondary distribution, all built to IEC 62271-200.
KYN28-12 Metal-Clad Withdrawable Switchgear (12 kV)
Air-insulated, metal-clad withdrawable switchgear for indoor 3.6–12 kV, three-phase 50 / 60 Hz single-busbar and sectionalized-busbar systems — HARRL's workhorse MV cabinet and the most widely deployed model in the range. The enclosure is divided into four independent compartments (busbar, circuit-breaker, cable and low-voltage), each fitted with a pressure-relief channel for arc venting, and a five-prevention mechanical interlock guards against misoperation. Accepts VS1 / ZN63A-12 (or equivalent) withdrawable vacuum circuit breakers; supports wall-mount and back-to-back arrangements.
KYN28-24 Metal-Clad Withdrawable Switchgear (24 kV)
Air-insulated, metal-clad withdrawable switchgear for indoor 24 kV, three-phase 50 / 60 Hz single-busbar and sectionalized-busbar systems. The enclosure is divided into four independent compartments (busbar, circuit-breaker, cable and low-voltage) in aluminium-zinc coated steel, with a five-prevention mechanical interlock — used in substations, industrial plants, renewable-energy collection stations and commercial buildings.
KYN61-40.5 Metal-Clad Withdrawable Switchgear (40.5 kV)
Air-insulated, metal-clad withdrawable switchgear for indoor 40.5 kV, three-phase 50 Hz single-busbar systems — the highest MV level in HARRL's switchgear range. Applied in 35 kV-class substations, power plants, mining and heavy-industry feeds. The handcart uses a screw-nut propelling mechanism allowing all operations with the door closed, and accepts composite-insulated or ZN85-40.5 vacuum circuit breakers.
MVnex Compact MV Switchgear (12 / 24 kV)
Built on the Schneider Electric MVnex design, this compact medium-voltage switchgear platform is engineered with CAD, synthesis-laboratory and dynamic-simulation tools. Designed around real installation, operation and maintenance conditions — reliable in long-term service, simple to operate locally via a front-panel mimic diagram, and safe through full mechanical and electrical interlocking plus internal arc-fault containment. Available in two voltage classes: MVnex-12 (12 kV) and MVnex-24 (24 kV). MVnex is a trademark of Schneider Electric.
HLXGN-12 Gas-Insulated Ring Main Unit (12 kV)
Unit-type, gas-insulated metal-enclosed ring-network switchgear for 12 kV, three-phase 50 Hz distribution and ring-network systems, designed for urban grids, prefabricated / compact substations and renewable-energy collection. A sealed gas compartment (IP67, ≤ 0.01 % annual leakage) houses the load-break switch, giving a maintenance-free, compact and fully interlocked unit with a 10 000-operation mechanical life.
SLG-12 Solid-Insulated Compact Ring Main Unit (12 kV)
A solid-insulated compact ring-main unit for 12 kV ring-network and radial distribution, using a load-break switch as the main switching device in a fully insulated, factory-assembled enclosure. Low partial discharge (< 10 pC at 14.4 kV) and a sealed IP67 switchgear body give a maintenance-free, space-efficient unit for compact secondary substations and urban installations.
HLC-12 Gas-Insulated Modular RMU / C-GIS (12 kV)
A gas-insulated, fully sealed modular ring-main unit (C-GIS style) for 12 kV ring-network and cable distribution. Built from independent functional units — C (load-switch / cable), F (load-switch-fuse) and V (vacuum circuit breaker) — so configurations can be combined per project. A pressurized gas tank (IP67, ≤ 0.01 % annual leakage) and IK10-rated, IP54 switchgear body deliver a compact, maintenance-free unit for urban and underground networks.