ZN85-40.5 INDOOR HIGH-VOLTAGE VACUUM CIRCUIT BREAKER

"The ZN85-40.5 series indoor high-voltage vacuum circuit breaker (hereinafter referred to as the circuit breaker) is suitable for three-phase AC 50Hz, rated voltage 40.5kV power systems, and can be used in industrial and mining enterprises, power plants, and substations for switching load current, overload current, and fault current. The circuit breaker and operating mechanism adopt a vertical layout, effectively reducing the breaker's depth. The three-phase arc chambers and associated live parts are isolated by three independent epoxy resin insulating cylinders, forming a composite insulation structure. The breaker meets air clearance and creepage distance requirements under normal operating conditions and effectively reduces the breaker's volume.
Note: This translation was generated by AI for reference only."

THREE-POSITION VACUUM CIRCUIT BREAKER

The VSD-12GD series indoor high-voltage three‑position vacuum circuit breaker boasts superior electrical and mechanical performance, with a reliable and stable operating mechanism and an extended service life. Its main circuit employs solid‑encapsulated pole assemblies, enhancing environmental adaptability and insulation reliability. With dependable mechanical and electronic characteristics and prolonged mechanical and electronic lifespans, the circuit breaker achieves maintenance‑free operation. It is suitable for 3.6–12 kV power systems and features comprehensive mechanical and electrical interlocking devices, delivering exceptional operational stability and reliability to ensure the safety of both personnel and equipment, as well as safe electricity usage.

MODULAR INDOOR VACUUM CIRCUIT BREAKER

The modular indoor vacuum circuit breaker is an indoor switching device rated for three-phase AC, 50 Hz, with a rated voltage of 12 kV. It is suitable for the control and protection of industrial and mining enterprises, power plants, substations, and electrical installations, and is particularly well suited for applications involving frequent operations. Featuring an integrated operating mechanism and circuit breaker body, it can be configured as a fixed‑mount unit or equipped with a dedicated push‑pull mechanism to form a withdrawable‑type unit. The main circuit section may incorporate an integral solid‑encapsulated pole assembly, enabling compact size, high reliability, and maintenance‑free operation; it is compatible with center‑mounted switchgear such as the KYN28A‑12 (GZS1).