China Switchgear Upstream Support Manufacturer, Supplier, Factory

The ZW7-40.5 outdoor high-voltage vacuum circuit breaker adopts a uniquely designed split pole and a highly reliable operating mechanism. The device is mainly used in medium-voltage overhead line power grids for dividing and combining load current, overload current, and short-circuit current.   ZW7-40.5 outdoor medium-voltage vacuum circuit breaker is athree-phase AC 50Hzoutdor high-voltage electrical equipment tis suitable for the control and protection of 20-40.5kV power transmission and distribution systems,it can also be used in the occasions of section circuit breakersand switched capacitor banks,this product can be used with piecewise controller,the reclosing device can realize intelligent sectioning and redosing control of the power system.A current transformer can be added for measurement and protection.The ring circuit breaker is equipped with a spring or electromagnetic actuator,with reliable mechanical performance and frequent operation;there is no riskof fire and explosion

The Electric Grounding Switch for Switchgear is an essential safety feature in high-voltage power systems, allowing for secure grounding and isolation of electrical equipment during maintenance. Designed for voltage ratings from 12kV to 40.5kV, it offers robust short-circuit protection and reliable mechanical performance. Its streamlined design enables quick installation and straightforward operation, making it perfect for use in high-voltage switchgear and substations. Meeting stringent international safety standards, this grounding switch ensures dependable operation and enhances safety in various electrical applications.

The switchgear spacer is an essential component used in electrical switchgear assemblies to ensure proper alignment and spacing between various elements, such as busbars, terminals, and enclosures. These spacers play a crucial role in maintaining electrical integrity, safety, and operational efficiency within switchgear systems.

SOLH 3L series 3/2-way hand pull directional control valves follow standard industry specifications with a default Normally Closed (NC) structure equipped with automatic spring return. Operated via straightforward axial push-pull handle movement, this manual pneumatic valve requires no electric parts or pneumatic drive signals, making it an intrinsically safe manual switching component for pneumatic circuits. It is widely deployed for single-acting cylinder actuation, circuit on-off switching, inching commissioning and safety interlock systems, especially ideal for field debugging, emergency cut-off and explosion-prone working environments. The three-port layout complies with universal industry standards: P for main compressed air inlet, A for working output port connecting single-acting cylinders, and R for exhaust port compatible with standard silencers to reduce exhaust noise. Under normal released status, the built-in return spring presses the precision spool to seal the P inlet; port A links to R for pressure relief to maintain the closed safe state. Manual pulling of the handle shifts the spool to connect P and A ports for air supply to drive cylinder movement. Once released, the spring instantly resets the valve, cutting air intake and exhausting residual pressure to prevent unintended continuous operation. Constructed with robust aluminum alloy housings and low-friction precision spools, the valve supports lubrication-free operation with stable sealing performance. Four size grades ranging from compact 3L100 up to heavy-duty 3L400 cover thread specifications M5, G1/8, G1/4, G3/8 and G1/2; PT, NPT and G thread options are available to satisfy global installation demands. The valve supports panel mounting and base mounting, sharing identical installation dimensions with the 3A air-operated valves for seamless interchange between manual and pneumatic control modes. Without any electrical components, it delivers spark-free operation suitable for flammable, dusty and humid workshops, commonly used for manual clamping, ejection cylinder control, equipment maintenance safety lockout and combined manual-pneumatic logic control systems paired with 3A pilot valves.

The AC Grounding Switch for High Voltage is a key component in electrical systems, designed to safely ground and isolate high-voltage equipment during service or repair. It is typically used in voltage applications from 12kV to 40.5kV and offers excellent short-circuit resistance and consistent mechanical reliability. Its compact design ensures easy installation and smooth operation, making it ideal for use in high-voltage switchgear and electrical substations. Built to meet the highest international standards, this grounding switch guarantees reliable protection and safety in even the most demanding power environments.

The indoor switchgear ground switch is a crucial safety apparatus in high-voltage electrical systems, enabling safe grounding and disconnection of equipment during maintenance procedures. Suitable for voltage levels from 12kV to 40.5kV, this switch is engineered to withstand significant short-circuit currents and offers dependable mechanical performance. Its compact and efficient design allows for quick installation and ease of use, making it ideal for high-voltage switchgear and substations. Adhering to strict international safety standards, this grounding switch guarantees reliable operation and enhanced safety in complex electrical environments.