3WL air circuit breakers

Versatile and with communication capability

3WL air circuit breakers offer highly flexible application and consistent communication capability. They ideally fulfill the increased requirements for air circuit breakers, particularly with regard to the operation and monitoring of network events when using electronic control systems. The quality of this series is setting standards around the world.

With the 3WL circuit breakers, just four sizes cover a performance range of 630 A to 6300 A. Available as a 3 or 4-pole version, they are suitable for use up to 1150 V. All models - whether fixed-mounted or withdrawable - are characterized by the same design, the same operation and the same comprehensive accessories. Special features: In the high-end performance range, the 3WL air circuit breakers are the smallest circuit breakers in their class worldwide.

Features

• Coordinated communication concept ranging from 16 A to 6300 A with 3VA molded case circuit breakers and 3WL air circuit breakers
• The high level of modularity of the circuit breakers and of the accessories allows the easy retrofitting of all communication components
• Significant additional benefits for the switchgear due to the possibility of linking up external input and output modules to the circuit breaker-internal CubicleBUS of the 3WL
• Innovative software products for parameterization, operation, monitoring, and diagnostics of circuit breakers, both locally or via PROFIBUS DP, MODBUS or Ethernet/Intranet/Internet
• Complete integration of circuit breakers into Totally Integrated Power and Totally Integrated Automation solutions

Applications

• As incoming feeder, distribution, coupling and outgoing feeder circuit breakers in electrical installations.
• For switching and protecting motors, capacitors, generators, transformers, busbars and cables.
• The AC devices are available as circuit breakers and non-automatic air circuit breakers. DC devices are available as non-automatic circuit breakers.

International standards and approvals

• IEC 60947-2
• IEC 60947-3
• UL489
• UL1066