HQR23B250
Suited for both long-time and instantaneous trip functions, this unit consists of three poles. The HQR23B250 model has a high interrupt rating of 65 kA at 240 V, ensuring reliable operation under faul
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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.
QRH22B175
This circuit breaker features two poles and operates on a single-phase system. It boasts an AIC rating of 25 kA at 240 VAC, ensuring reliable performance during fault conditions. Equipped with both lo
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QRH22B250
This circuit breaker employs a thermal magnetic trip unit, ensuring effective protection. It is engineered with a QRH2 frame and requires bolt-on mounting. The line side connection is achieved via a p
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HQR22B225
This circuit breaker features a two-pole configuration and is classified under the HQR frame type. It supports an interrupt rating of up to 65 kA and operates within a frequency range of 50/60 Hz. The
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HQR23B250H
This circuit breaker accommodates three poles and incorporates thermal-magnetic trip functions. It is rated for a high interrupting capacity of 100 kA at 240 VAC, making it suitable for rigorous elect
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QR22B200
Designed with a QR frame, this circuit breaker features a total of two poles for seamless connectivity. It supports operational frequencies from 50 to 60 Hz. The NEMA 1/3R enclosure type enhances its
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QRH23B100
This circuit breaker is structured with three poles and utilizes a thermal magnetic trip type for effective overload and short-circuit protection. It supports a maximum interrupt rating of 25 kAIC at
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SQRD
This mounting strap supports horizontal orientation using a twin mount configuration and complies with UL 67 and RoHS standards. It is suitable for use with QR2, QRH2, HQR2, and HQR2H breaker frames w
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HQR22B150
This circuit breaker features two poles and an AIC rating of 65 kA at 240 V. With a thermal magnetic protection mechanism, its trip functions include long-time and instantaneous options. Additionally,
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QR23B175
Characterized by its thermal magnetic protection, this breaker features three poles and offers both long-time and instantaneous trip functions. It is rated for 10 kAIC at 240 VAC, making it suitable f
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