33kv Vacuum Circuit Breaker

The 33kV vacuum circuit breaker is the highest quality product produced by Youbian and can accept customization. As one of the top suppliers and manufacturers in China, we are qualified to confidently say that our product quality is very good and everything is up to standard! Looking forward to your arrival and inquiry!

Electrical control specifications

Control voltage: 220V DC, internal self powered, using 250V, 22000 μ F capacitors. The end user only needs to prepare the main contact of the relay for closing and opening.

Auxiliary voltage: 110V/220V DC, 110V/220V AC optional, customers can specify before placing an order.

Disconnecting time: ≤ 8ms (factory test records are attached for each switch)

Closing time: ≤ 11ms (factory test records are attached for each switch)

Recommended control pulse time: 0.1s

Wiring method for vacuum switch

Please ensure that the end user connects the junction box to the BRZW32 vacuum switch according to the following diagram. The junction box is a self powered controller.

Before using the switch on high-voltage lines, please ensure that each cable connector is connected correctly.

Please press the switch buttons (A, B, C) for each phase and check if the connection is good. The normal working state is that each phase's electrical control is matched with the corresponding correct phase switch. Self powered junction box (switch controller)

The Importance of Medium Voltage Power Systems

In modern power grids, a 33kV vacuum circuit breaker is the primary protection mechanism for infrastructure and personnel. It is crucial for maintaining grid stability by managing load current and immediately clearing short circuit faults up to 31.5kA.

Protect expensive equipment such as transformers, capacitor banks, and transmission lines from surge surges.

Can ensure the shortest downtime for industrial plants, substations, and renewable energy facilities (wind/solar).

Environmentally friendly operation: Unlike SF6 circuit breakers, our 33kV vacuum circuit breaker vacuum technology does not produce greenhouse gas emissions and is in line with global environmental sustainability goals.

Compliant with international IEC and ANSI standards

In high-voltage engineering, reliability and safety cannot be compromised. Youbian strictly produces 233kV vacuum circuit breakers in accordance with major international and national standards to ensure their global compatibility and safety.

Main compliance standards

IEC 62271-100: High voltage switchgear and control gear.

GB 1984: National Standard for High Voltage AC Circuit Breakers.

ISO certification: Our production facilities have passed ISO9001 (Quality Management System), ISO14001 (Environmental Management System), and ISO45001 (Occupational Health and Safety Management System) certifications.

These certifications ensure that each device has consistent dielectric performance, mechanical durability (M2 level), and safe operation under rated parameters.