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Siemens Molded Case Circuit Breakers

Molded Case Circuit Breakers For Any Application

Siemens - a name that stands for innovation and quality - offers one of the most comprehensive lines of Molded Case Circuit Breakers on the market today. With current ratings from 3A to 2000A and interrupt ratings up to 200kA at 480V, the possibilities are endless. Geared for Industrial, Commercial and OEM applications, when it comes to ready availability, easy installation, and quality, you need a manufacturer you can trust. Our products are engineered to take on the most demanding conditions day after day.

QR Circuit Breakers

Siemens QR circuit breakers have a compact design for use in North American markets. Features include the ability to handle higher interrupting ratings and in-rush currents, as well as available UL listed field-installable internal accessories. QR circuit breakers can be implemented in load centers, panelboards, switchboards, modular metering and meter centers.


Siemens Sentron series circuit breakers have a long history of excellent performance in both the commercial and industrial market segments; they are tried and true in the most critical applications. Siemens Sentron Series circuit breakers are available in nine frame sizes from 125A to 2000A and are globally rated (UL489, CSA, CE, NOM, HID, HACR, SWD). Features include field installable external accessories, series connected short circuit ratings, and many sizes for motor circuit protectors & molded case switches.

Panelboard Circuit Breakers

Siemens Panelboard Mounting Circuit Breakers are industrial design thermal-magnetic breakers with valuable features for the global market, such as a design that meets multi-national standards, global ratings (UL489 / CSA-C22.2 No. 5-02 / IEC 60947-2 / NMX-J-266-ANCE-2002), and field installable internal and external accessories.

3VA Molded Case Circuit Breakers

Siemens new 3VA molded case circuit breakers offer safe, efficient and variable application options for low and medium-voltage power distribution whether in industrial applications, infrastructure or buildings. The 3VA range of molded case circuit breakers provides frame sizes covering 100A to 630A with our UL 3VA5 and 3VA6, as well as IEC 3VA1 and 3VA2 models that can be easily adapted to your individual needs.


Available in continuous current ratings from 30A to 1600A, the VL family of circuit breakers by Siemens utilizes a compact and modular design which can be configured to suit a wide range of ratings and applications. Each frame is available with three choices of trip unit: thermal-magnetic, electronic and electronic with LCD. All VL breakers are available in three interrupting ratings classes up to 100kA at 480VAC. A full array of both internal and external accessories is available for the VL family of circuit breakers.

General Application Circuit Breakers

Siemens General Application Circuit Breakers are industrial design thermal-magnetic breakers with valuable features for the global market. It features breakers that are well suited for OEM designed equipment in both light commercial and industrial applications. The breakers also includes thermal-magnetic breakers, molded case switches and motor circuit protectors. These breakers are compact in size, save space, reduce overall panel size and have field-installable accessories which allow for last minute changes.

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