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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.

QF260A

This circuit breaker operates with an interrupt rating of 10 kA and provides both long-time and instantaneous trip functions. It is engineered for plug-on mounting, making installation straightforward

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5.0

QN2175R

Designed to meet industrial standards, the QN2175R features a 10 kAIC interrupting rating and employs thermal-magnetic protection for reliable operation. With a QN frame, it connects using a plug-in m

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5.0

QS2100H

This circuit breaker operates within a thermal/magnetic trip type and is rated for 22 kA interrupt capacity. It utilizes a plug-in connection type, accommodating wire sizes from 3 AWG to 300 kcmil and

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5.0

Q34000S01

This circuit breaker supports three-phase systems and has an interrupt rating of 10 AIC. It provides a wire range accommodating from #14 to #2 AWG for copper and aluminum connections. The Q34000S01 is

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5.0

QF240A

This two-pole circuit breaker connects using a plug-in type and is compatible with Siemens EQ, NQ, and Gould panels. It has a significant interrupting rating of 10kA and operates within a frequency ra

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5.0

Q215GF

This GFCI breaker operates effectively within a temperature range of 0°C to 40°C. It can handle humidity levels up to 80% for both operation and storage. Installation is feasible up to 1000 meters abo

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5.0

Q25000S01

This circuit breaker features a dual-pole configuration and is rated for an interrupt capacity of 10 KAIC. It can function in environments with non-condensing humidity levels up to 80%. Designed for i

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5.0

QN2150H

With two poles, the QN2150H delivers an interrupting capacity of 22 kA at 240 VAC. This main circuit breaker utilizes a plug-in connection type and supports wire sizes from 1 AWG to 300 kcmil. Additio

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5.0

QS2125

The QS2125 features a two-pole configuration and a plug-in connection type for easy installation in load centers. With an interrupt rating of 10 kA at 240 V, it is recognized for its reliable performa

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5.0

QS2150

This large frame circuit breaker is rated for 150 amperes and features a plug-in mount connection type. The QS2150 is certified to UL 489 and CSA standards, ensuring safety and reliability in various

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Showing 31-40 of 73 results