Siemens Power DistributionSiemens Power Distribution

Flexibly Applicable and Communication-Capable

3WL air circuit breakers offer a very flexible applicability and integrated communication capability. They optimally meet the increased requirements placed upon air circuit breakers particularly with regard to the operation and monitoring of network processes in connection with electronic control systems. The quality of this range sets new standards worldwide.

With only three sizes, the 3WL air circuit breakers cover a power range from 630 A to 6300 A. Featuring a 3- or 4-pole design, they are suitable for applications up to 1000 V. All models are characterized by identical design – in fixed-mounted as well as withdrawable version – identical operation and identical comprehensive accessories. The particularity: In the upper performance range, the 3WL is the world’s smallest circuit breaker of its class.

Advantages at a glance

  • Flexible and global applicability
    for temperatures up to 70 °C; no derating up to 55 °C

  • Easy planning, assembly and retrofitting
    through modular design with only 3 sizes, few components and uniform accessories

  • Full communication capability
    via PROFIBUS-DP or Modbus
    integrated communication concept with 3VL

  • Smallest circuit breaker on the market
    in the power range from 5000-6300 A

  • RoHS-compliant

Application areas

  • As incoming-feeder, distribution, coupler and outgoing-feeder circuit breaker in electrical systems

  • For the switching and protection of motors, capacitors, generators, transformers, busbars and cables

  • Devices in AC version are available as circuit breaker and non-automatic circuit breaker. Devices in DC version are available as nonautomatic circuit breaker.

International standards and approvals

  • IEC 60947-2

  • DIN VDE 0690 Part 1

  • Climatic withstand capability in acc. with DIN IEC 68 Part 30-2

  • CCC, Gost

  • Shipbuilding, e.g. GL, ABS, LRS, PRS For international applications, also versions in acc. with UL 489 are available. For 3WL air circuit breakers / non-automatic circuit breakers approved in acc. with UL 489 up to 5000 A, refer to catalog LV 16. (Order No. E86060-K1816-A101-A1)