Siemens Circuit Breaker Solutions

Circuit Breakers

Siemens circuit breakers protect your electrical apparatus helping to minimize down-time at lower costs. We develop a wide range of circuit breakers with ampacities up to 5000A that are equipped with numerous communication capabilities, have various modular designs and are certified with global ratings.

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New SZSI available to meet changes to NEC 2014!

In 2014 NEC will require an arc energy reduction mechanism for circuit breakers rated 1200A and above. Methods for reducing the clearing time may include: Zone-selective interlocking (ZSI), Differential relaying, Energy-reducing maintenance switching with local status indicator, or an approved equivalent means. Siemens answers with our new SZSI. This module is currently available and provides ZSI connectivity between our molded case breakers and the WL breaker.

Molded Case Circuit Breakers

Siemens offers one of the most comprehensive lines of Molded Case Circuit Breakers (3A to 2000A) on the market today. 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.


Power Circuit Breakers

Thousands of options, few components: That's the WL generation of circuit breakers (200A to 5000A) with a modular design to support every conceivable application in power distribution systems. It's cost effective and flexible, with communication functionality enabling integration in system solutions.

Residential Circuit Breakers

Siemens offers a wide array of thermal-magnetic circuit breakers that are the key element for overload and short-circuit protection of your home’s electrical system. To provide additional protection Siemens offers circuit breakers to protect against severe electrical shock or electrocution, mitigate the risk of electrical fires and protect against damaging surges and voltage spikes.

IEC Miniature Circuit Breakers

Miniature Circuit Breakers are 1-, 2- and 3-pole thermal/magnetic overcurrent protection devices that are intended for general industrial use such as Branch Circuit Protection. Suitable for applications up to 277 VAC and 60 VDC (1-pole); and, up to 480Y VAC and 125 VDC (2- and 3-pole).

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