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Q Series

Siemens Q Series

The Siemens Series Q is a line of thermal magnetic circuit breakers used for protecting electrical circuits from overloads and short circuits. It includes Standard single pole, double pole, common trip, and plug in models rated around 120/240 VAC, with amperages from about 15A up to 50 100A and interrupting ratings around 10 kA. These breakers are used in residential and light commercial load centres for circuits that feed lighting, outlets, heating, refrigeration and air conditioning. They serve in panelboards and meter combo enclosures to ensure safe distribution of power in industrial facilities, homes and commercial buildings.

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 Q Series

Browse available units in our catalog of Q Series.

Q215

This 2-pole circuit breaker is engineered to handle up to 15 A with an interrupting capacity of 10 kA. The Q215 is suitable for voltages of 120/240 VAC and operates in a 60 Hz frequency environment. I

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4.5

QF220A

Offering a thermal-magnetic trip type, the QF220A breaker is engineered to respond quickly to ground fault conditions with a sensitivity threshold of 5 mA. It supports a frequency rating of 50/60 Hz a

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4.5

Q2100

This circuit breaker features a thermal magnetic trip mechanism and is suitable for applications requiring 50/60 Hz frequency operation. It comes with robust UL 489, CSA, and HACR certifications, ensu

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5.0

Q250

The Q250 has an enclosure rating of NEMA 1/3R, making it suitable for internal and outdoor applications. This circuit breaker operates at a frequency of 60 Hz and offers a plug-in mounting style. Its

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5.0

Q220

This molded case circuit breaker boasts a robust interrupting capacity of 10 kA and is designed for both NEMA 1 and NEMA 3R environments. It is rated for frequencies of 50/60 Hz and has a compact QP f

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5.0

Q230

This miniature circuit breaker features a 10 kA interrupting capacity and complies with UL 489, HACR, and CSA standards. With a frequency rating of 60 Hz and a mounting method that allows for easy plu

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5.0

Q260

This 2-pole circuit breaker features a voltage rating spanning from 120 to 240 VAC. It is suitable for use with a maximum frequency of 60 Hz. The Q260 model is mounted using a plug-in method and fits

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5.0

Q115

The Q115 circuit breaker features a thermal magnetic trip range and is capable of interrupting currents up to 10 kA. It is designed for NEMA 1/3R rated enclosures and supports plug-in connection mount

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4.5

Q225

This circuit breaker features an interrupting capacity of 10 kA and fits into a QP frame size. It operates at a frequency of 60 Hz and has a plug-in mounting style. The enclosure is rated NEMA 1/3R, e

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4.5

Q330

This device operates within a trip range defined by thermal magnetic protection and has a three-pole configuration. Its interrupting rating is 10,000 AIC. Mounting is facilitated through plug-in type

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5.0
Showing 1-10 of 73 results