China Switchgear door locking catch Manufacturer, Supplier, Factory

GW4-12(40.5) Outdoor HV Disconnect Switch GW4-12(40.5)outdoor AC high voltage disconnect switch (disconnect switch for short) is used to open and close circuit with voltage but no-load 50/60Hz, 12(40.5)kV power system. It accords with standards of IEC129-1984 AC Disconnect Switch and Earthing Switch and GB1985 and other relative standards.

The Moving Part for 6-Points Auxiliary Blocks is a critical component designed for use in high-performance electrical switchgear systems. This moving part is specifically engineered to facilitate the smooth operation of auxiliary blocks, ensuring reliable and consistent electrical connections within the switchgear assembly. Constructed from high-grade materials, this component provides excellent durability and wear resistance, which is essential for withstanding the demanding environments of electrical substations and industrial settings.

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.

Richge is a manufacturer of HV electrical sensor in China, specializing in producing advanced sensors designed to monitor and ensure the integrity of insulation in high-voltage electrical systems. Our insulation sensors are engineered to provide precise measurements and reliable performance, contributing to the safety and efficiency of high-voltage operations.

SOLH CDJ2 stainless steel pen-type mini pneumatic cylinder is fully interchangeable with SMC CJ2 series, available in bore sizes φ6/10/16 with built-in magnetic ring compatible with magnetic position switches. Constructed with 304 stainless steel barrel and piston rod for rust resistance and mild anti-corrosion performance, suitable for humid, food-grade, medical and clean environments. Tie-rod-free crimped end cap design delivers compact and lightweight outline. Complete variants cover CDJ2B double acting standard type, CDJ2E single acting spring return, CDJ2ET single acting spring extend, and CDJ2KB non-rotating hexagonal piston rod for anti-twist positioning. Standard rubber cushion; Z air cushion is optional for φ10/16 to reduce impact at high speed. Minimum starting pressure reaches 0.06MPa, supporting oil-free continuous operation with service life over 5 million cycles. A full set of mounting accessories including flange, foot bracket and double clevis is available. Compared with C85 and MI mini cylinders, CDJ2 provides richer specifications and better cost performance. Widely used for high-frequency linear push-pull motion in confined-space equipment for 3C testing, food machinery and medical automation. A minimum 50% safety margin on thrust is recommended during selection.

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