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QR Circuit Breakers

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.

Not an Authorized Distributor: DO Supply is not an authorized distributor for listed manufacturers or tradenames and therefore the manufacturer's warranty does not apply. All of our products come with DO Supply's 2-year warranty.
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Browse QR Circuit Breakers

Browse available units in our catalog of QR Circuit Breakers.

QRH23B125

This molded case circuit breaker accommodates a frequency rating of 50/60 Hz and provides an interrupt rating of 25 kAIC at 240 VAC. It features a bolt-on connection for load side terminals and a plug

In Stock Ships Tomorrow
5.0

HQR23B200

Designed to handle a voltage of 240 V AC, this unit features a robust interrupting rating of 65 kA. The breaker operates within a frequency range of 50 to 60 Hz. It incorporates a bolt-on mounting des

In Stock Ships Tomorrow
5.0

QR23B250

The QR23B250 features three poles and utilizes a thermal magnetic trip mechanism. Its interrupting capacity is rated at 10 kAIC, providing reliable protection against overcurrents. This circuit breake

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5.0

QRH22B200

This circuit breaker consists of two poles and is suitable for a single-phase setup. It possesses an interrupt rating of 25 kA at 240 V AC, ensuring robust performance during adverse conditions. The f

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5.0

HQR23B150H

This breaker offers long-time and instantaneous trip features, along with an impressive interrupt rating of 100 kA at 240 V. It is suitable for three-phase systems and operates efficiently within a fr

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5.0

QR22B125

This model features two poles and operates at a thermal magnetic trip type, ensuring efficient response to overloads and short circuits. The circuit breaker has an interrupt rating of 10 KAIC at 240 V

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5.0

QR23B125

This circuit breaker features a thermal-magnetic trip unit and includes long-time and instantaneous trip functions. It is constructed for three-phase systems and includes three poles, making it versat

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5.0

QR23B225

This Siemens QR Series circuit breaker consists of three poles and has a HACR rating for versatility in heating, air conditioning, and refrigeration applications. It establishes connections using scre

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5.0

QRH23B200

The QRH23B200 molded case circuit breaker is rated for 200 Amperes and operates at 240 Volts AC across 3 poles. It features an interrupt capacity of 25 kiloamperes and supports operational frequencies

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5.0

HQR23B125

This circuit breaker comes with a thermal-magnetic trip type for reliable protection. It has a fixed thermal and magnetic trip adjustability. The breaker can handle an interrupting rating of 65 kA at

In Stock Ships Tomorrow
5.0
Showing 21-30 of 46 results