China Switchgear Components Manufacturer, Supplier, Factory

Richge is a manufacturer of High voltage protection box in China, specializing in producing robust and reliable contact boxes designed for high-voltage applications. Our high voltage contact boxes are engineered to ensure secure and efficient electrical connections in demanding environments.

VSG-24 Series of Indoor high Voltage Vacuum circuit breaker with embedded poles is three phase A.C 50Hz indoor power distribution equipments with the rated voltage of 24kV. It’s used for protecting and controlling the electrical equipment in the fields of industry&ming enterprise , power plants and substation. The main conductive circuit of this type vacuum circuit breaker uses embedded pole, matched with Modular organization and Integrated energy storage handle. The overall layout is reasonable, perfectly with brevity and really realize the free-maintenance and longer mechanical &electrical life. The indoor withdrawable vacuum circuit breakers are suitable for three-phase AC power systems with rated voltages up to 24kV and frequency 50/60Hz. They are widely used in power plants, substations, petrochemicals, metallurgy, manufacturing and other industries, airports, residential areas,.

SOLH 4M series plate-type 5/2-way solenoid valves strictly comply with international NAMUR mounting standards, purpose-built for direct assembly onto pneumatic actuators driving ball valves and butterfly valves. The integrated bottom base comes with pre-embedded P, A, B, R1 and R2 air passages, enabling seamless docking with actuator air cavities without external tubing for A/B working ports. This streamlined layout drastically cuts pipeline layout workload and potential air leakage points compared with conventional tube-connected 4V series solenoid valves. This lineup adopts internal pilot spool construction with oil-free operation, offered in single-coil spring reset (4M×10) and double-coil latching memory (4M×20) configurations covering three size grades: 4M100, mainstream 4M200 and high-flow 4M300. Single electric control variants automatically reset under spring tension once power is disconnected for fail-safe reset scenarios, while double electric control versions retain their switching position steadily after power cut to sustain valve opening/closing status for long-term pipeline locking. Each unit is fitted with a side-mounted manual override button for convenient offline commissioning and maintenance testing. Coils support widely used global AC/DC voltages with IP65 dustproof and waterproof ingress protection, suitable for rigorous working conditions in water treatment, chemical pipelines and general industrial fluid switching. The series is dimensionally compatible with manifold bases shared with the equivalent 4V series, supporting standalone actuator installation or centralized valve island assembly via multi-station manifolds. With certified standard NAMUR interface, interchangeable with mainstream Airtac 4M series, it serves as a dedicated matched control component for automated on-off regulation of pneumatic ball and butterfly valve actuators.

Secondary Plug-in Switchgear: Product Details and Applications The secondary plug-in switchgear is a critical component designed for modern electrical distribution systems, providing a reliable interface for connecting secondary circuits. Constructed with high-quality materials, it ensures durability and optimal performance under varying operational conditions. The switchgear features a compact design, allowing for easy integration into existing systems, while maintaining compliance with international safety standards.

Switchgear Bearing Plate – Product Details and Applications The Switchgear Bearing Plate is an essential structural component designed to support and stabilize rotating or sliding elements within switchgear systems. Typically made from high-strength materials such as stainless steel or coated aluminum alloys, these plates ensure reliable mechanical performance under extreme electrical and environmental conditions. They are crafted with precision to resist corrosion, mechanical stress, and wear over time, contributing to the durability and smooth operation of the switchgear.

SOLH 3A series 3/2-way externally air-operated directional control valves are manufactured in accordance with mainstream industry standards. Driven entirely by pneumatic signal input without any electromagnetic coils, this series is engineered to govern extension, retraction and pressure retention of single-acting pneumatic cylinders. It serves as the critical safety control element for all-electric-free pneumatic circuits, hazardous explosive atmospheres and fail-safe industrial machinery. The standard three-port layout follows universal industrial definitions: P for main compressed air supply inlet, A for working outlet connected directly to single-acting cylinders, and R for exhaust port for pressure relief and rapid spring reset. Two control configurations are available. Single pneumatic control models (3A×10) switch upon receiving external air signals and automatically reset via built-in springs once the control air signal is removed to guarantee fail-safe reset performance. Double pneumatic control variants (3A×20) adopt latching spool structure, locking the valve position persistently even after control air is disconnected to sustain long-term clamping and positioning. Constructed with high-strength aluminum alloy valve bodies and precision-machined spools, the valves support oil-free operation under filtered compressed air with filtration precision above 40 μm within the working pressure range of 0.15~0.8 MPa. Four dimensional specifications from miniature 3A100 up to heavy-duty high-flow 3A400 cover M5 to G1/2 thread connections, and NPT threads are optional for overseas projects. Without internal electrical parts, the valve features intrinsic explosion-proof performance, perfectly suited for flammable, dusty and humid working environments. It supports random multi-angle installation and manifold assembly for modular valve banks, widely deployed in workpiece clamping mechanisms, pneumatic safety interlock systems and long-duration positioning stations.