Siemens QR Circuit Breakers

Siemens QR circuit breakers have compact housing. They are equipped to handle high inrush currents and interrupt ratings, and they support internal accessories that can be field-installed. QR circuit breakers are frequently used in panelboards, power panels, load centers, meter centers, and switchboards. They can operate without derating at ambient temperatures of up to 40 degrees Celsius (104 degrees Fahrenheit). The QR circuit breakers series includes 2-pole and 3-pole breaker models. Many models also support reverse feed features and push-to-trip buttons. Some QR circuit breakers can support maximum interrupt ratings of 100 kA.

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Browse QR Circuit Breakers

Browse available units in our catalog of QR Circuit Breakers.

HQR22B100

This model features two poles and operates under thermal magnetic protection mechanisms. It has a noteworthy interrupt rating of 65 kAIC at 240 V and employs a bolt-on connection style for straightfor

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QRH22B150

This circuit breaker features two poles and employs thermal magnetic protection. It supports both long-time and instantaneous trip functions. With a 25 kA interrupt rating at 240 V, it provides reliab

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QRH23B150

As part of the QR series, the QRH23B150 circuit breaker incorporates a thermal magnetic protection mechanism. It features three poles and functions efficiently at frequencies of 50/60 Hz. With an impr

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S01QR2

With a rated voltage range of 120 to 240 V AC, the S01QR2 operates effectively between a minimum frequency of 50 Hz and a maximum frequency of 60 Hz. Suitable for locations up to 1000 meters above sea

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5.0

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HQR23B175

This three-pole circuit breaker features a bolt-on connection type and a load side lug terminal configuration. It incorporates thermal magnetic tripping functions for both long-time and instantaneous

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QR22B150

This model features a thermal magnetic trip type with long-time and instantaneous trip functions. The QR22B150 breaker is rated for 10 kA interrupt capacity at 240 VAC and has two poles. It is mountab

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