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VL Molded Case Circuit Breakers

Siemens VL Molded Case Circuit Breakers utilize a compact and modular design which can be configured to suit a wide range of ratings from 30A up to 1600A.  Designed for global requirements, most breakers include the world's major standards and markings such as UL, CSA, NOM, IEC, CE and CCC.  At 480 VAC, VL Circuit Breakers feature N-Class (35kA), H-Class (65kA) and L-Class (100kA) interrupting ratings.  They also feature both thermal magnetic and electronic trip units across the entire product line, assuring compatibility for virtually any application.  VL Trip Units measure true RMS current.  This type of measurement ensures the most accurate means of measuring currents in today’s harmonic filled electrical distribution systems.

Features and Benefits

NEW! Electronic Trip Unit

Developed with the customer in mind, the new Models 555 & 586 electronic trip units offer valuable features. A few of which include available Modbus RTU or Profibus DP communication for both versions, ground fault ‘alarm only’ functionality and improved usability such as a backlit LCD and larger membrane keypads.

In line with the impending launch of the new trip unit, the current Siemens VL electronic trip unit portfolio will be phased-out.  This phase-out will include some associated communication accessories.


  • Modular design – The modularity of the VL allows for last minute adaptation, forgives changes in system design and reduces inventory. Just two families of common internal accessories cover the complete range of VL breakers. The accessories are field installable and conveniently located in isolated pockets behind the front cover. No special tools are required.

  • Compact size -– Reduced dimensions save panel space, which can reduce the overall system design requirements and therefore material costs.

  • Global ratings – VL breakers are designed for global use, allowing the user to serve virtually every market using one design and footprint. All VL breakers are HACR rated.

  • Communication capable – Communication is possible over PROFIBUS DP or MODBUS RTU with electronic trip units.

  • Breadth of offering– A wide variety of protection options, ampere ratings as well as a full basket of available accessories ensure that Siemens has the product to suit your needs. Most VL breakers are also available with 100% ratings.

  • High reliability – most VL components are tested to twice the endurance specified by UL.


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