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VX2-12 Series Upper Disconnect & Upper Earthing Load Switch Unit
Product Overview
The VX2-12 series upper disconnect & upper earthing load switch unit is a core built-in switch module for 12kV eco-gas insulated ring main units (RMUs). It integrates a disconnect switch, load switch and earthing switch in one assembly, fully meeting operating requirements including load current making/breaking, electrical isolation and maintenance earthing for distribution lines.
Key Advantages
Compact Integrated Design With an upper disconnect + upper earthing layout, the highly integrated structure greatly reduces cabinet depth, optimizes internal space of the RMU and facilitates wiring and subsequent maintenance.
Reliable Insulation & Current Carrying Performance High-strength red insulating shields are adopted for phase-to-phase and earth insulation. Precision-machined conductive components ensure stable contact between moving and fixed contacts, delivering excellent rated and short-time withstand current performance for urban and industrial power distribution networks.
Safe Mechanical Interlock Protection Standard mechanical interlock logic is built in: the disconnect and earthing switches cannot be operated when the load switch is closed; the load switch is locked against closing if the earthing switch is engaged. Physical interlocks eliminate maloperation and protect maintenance staff.
Compatible with Eco-Gas RMUs SF₆-free design, compatible with eco-friendly insulating media such as dry air and nitrogen. It aligns with low-carbon upgrading trends of power grids and reduces maintenance and waste gas treatment costs.
Easy Assembly & Wide Compatibility Standard mounting holes support modular pre-installation inside ring main units. Manual or motorized operating mechanisms are optional, compatible with mainstream domestic cabinet types.
Typical Application Scenarios
Urban municipal distribution ring cabinets & switchgear rooms
10kV power rooms for industrial parks, data centers and hospitals
Incoming/outgoing units for PV & wind turbine box transformers
Retrofit projects for aging SF₆ ring main units
Reference Technical Parameters
Rated Voltage: 12kV
Rated Frequency: 50Hz
Configuration: 3-position composite switch with upper disconnect and upper earthing
Compatible Insulation Media: Dry air / Nitrogen eco-insulated cabinets
Short E-commerce Version (Direct for Web Upload)
The VX2-12 upper disconnect & upper earthing load switch unit is the core switching module for 12kV eco-gas insulated ring main units. It integrates load, disconnect and earthing switches with robust mechanical interlocks to prevent dangerous maloperation. The compact top layout saves cabinet space, supporting eco-insulation media including dry air and nitrogen. Widely used in 10kV RMUs, box transformers and commercial & industrial power distribution projects. Modular pre-assembly available, with optional manual or motorized operating mechanisms.
