Vacuum Circuit Breakers of the BB/TEU (VCB) Series

The design of the circuit breaker is based on the use of in-phase electromagnetic drives with a "magnetic latch", mechanically connected by a common, non-load-bearing, synchronizer shaft. The parallel-connected coils of the electromagnetic drive of the circuit breaker phases are connected to the pre-charged capacitors in the control units (BK/TEU) when the commands are executed. This design made it possible to achieve the following distinctive features in comparison with traditional vacuum circuit breakers (CB):

• High reliability;
• No need for maintenance during the entire service life;
• The possibility of installation in any cabinets of distribution devices of medium voltage class;
• A wide range of operational supply voltages;
• Low power consumption from the operational power supply network;
• Functions of telesignaling;
• Certification of products for compliance with national standards of consumer countries and international standards;
• A wide range of services and customer support throughout the product life cycle;
• Environmental cleanliness and safety for the environment.

Vacuum circuit breakers ВВ/TEU (VCB) have certificates of compliance with the standard of the International Electrotechnical Commission IES 56, certificate of compliance with GOST 687-78.

The switch is designed for operation in alternating current networks with a voltage of up to 10 kV and a nominal current of up to 2000 A with a tripping current of up to 31.5 kA.

The warranty period of operation is 5 years. The service life of switches is 25 years, while they do not require preventive repairs and maintenance during operation.

The ВВ/TEU (VCB) vacuum circuit breaker is supplied as part of WE/TEU withdrawable elements and KM/TEU-10 switching modules, complete distribution devices of the KRU/TEU-10 series and the TEU_RVA-10 (REC_15) recloser.