Molded Case Circuit Breaker

Requirements are increasing for cost-effective and energy-efficient operation of the electrical power distribution. Whether in industrial applications, buildings, or infrastructure: As a modular, highly variable system, the 3VA range of molded case circuit breakers provides thoroughly reliable operator and plant protection while supporting every process phase – from planning to the operation of electrical power distribution.

Comprehensive certification. Global use.

3VA molded case circuit breakers are available in several series with IEC approval as well as in series that comply with the IEC60947-2 and the UL489 standards. The system offers the best preconditions for machine and switchgear manufacturers. They can use all the functions of the molded case circuit breakers for plants that are operated in Europe and in North America and be completely confident of full compliance with the standards.

Category:
  • Modular, well-conceived, and highly variable system
  • High system availability thanks to an excellent selectivity concept
  • Integrated measured value acquisition
  • Simple integration into higher-level energy management and automation systems
  • Comprehensive range of accessories for flexible function expansions
  • Minimal space requirements thanks to a highly compact design
  • Optimal support in all tasks of a modern power distribution – in every phase of the engineering processes, e.g. by providing CAx data

Tested in accordance with IEC60947-2
3VA1 molded case circuit breakers

  • Performance range from 16 A to 250 A
  • Breaking capacity between 16 kA and 70 kA at 415 V AC
  • 1-, 2-, 3- and 4-pole versions
  • Thermal-magnetic trip unit
  • Suitable for DC applications
  • Available as starter protection version and as switch disconnector

3VA2 molded case circuit breakers

  • Performance range from 25 A to 1,000 A
  • Breaking capacity between 55 kA and 150 kA at 415 V AC
  • Electronic trip unit
  • Excellent selectivity values at high breaking currents
  • Integrated measurement value display (ETU 5-series and 8-series)
  • ETU 8-series: integrated measurement function for current, voltage, and energy values
  • Communication capability with PROFIBUS, PROFINET, Ethernet (Modbus TCP), and Modbus RTU

Tested in accordance with UL489 and IEC60947-2 

3VA5 molded case circuit breakers

  • Line protection from 15 A to 250 A
  • Breaking capacity up to 100 kA
  • 1-pole and 3-pole breaker versions
  • Thermal-magnetic trip unit
  • Also available as a molded case switch and as a motor circuit protector 

3VA6 molded case circuit breakers

  • Line protection from 40 A to 600 A
  • Breaking capacity up to 150 kA at 480 V AC
  • 3-pole or 4-pole versions
  • Electronic trip unit
  • Integrated measuring function for current, voltage, and energy values
  • Optional communication via PROFIBUS, PROFINET, Ethernet (Modbus TCP), and Modbus RTU
  • Easy integration into higher-level energy management and automation systems
  • Different circuit breaker versions available as “100% rated” (uniterrupted rated current)