Free UPS Ground on All Orders!
+1 (919) 205-4392
QB Series

Schneider Electric QB Series

The Schneider Electric QB series is a line of molded case circuit breakers that offer overcurrent protection for AC motor systems. These QB breakers are available in 2- and 3-pole configurations, with current ratings ranging from 70 to 250 A and interrupting ratings from 10 kA to 100 kA. They are suitable for use in panelboards, switchboards, and OEM applications. The QB series circuit breakers are designed for both unit-mount and I-Line installations, providing flexibility and reliability in various industrial systems.

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.
Learn more

Browse QB Series

Browse available units in our catalog of QB Series.

QBA221502

This circuit breaker is designed with two poles and a 10 kA interrupt rating, suitable for managing electrical faults. It functions efficiently at rated frequencies between 50 and 60 Hz and features a

In Stock Ships Today
4.5

QBA32225

This circuit breaker supports a maximum interrupt rating of 10 kA and is designed with thermal magnetic protection. It utilizes a 1-line style plug-in connection and has a weight of 3.05 lbs. It is ef

Call
4.5

QBA221751

This circuit breaker has a thermal magnetic protection category and an interrupt rating of 10 kA, ensuring reliable circuit protection. It is designed for plug-in connections and can function in envir

Call
5.0

QBA221752

Featuring an interrupt rating of 10 kA, this circuit breaker is capable of handling significant fault currents. It functions effectively within a temperature range of 0°C to 40°C and can withstand hum

Call
5.0

QBA32070

This circuit breaker can function effectively in various environments, with a minimum operating temperature of 0°C and a maximum of 40°C. Its thermal magnetic protection mechanism is suitable for long

Call
4.5

QBA222004

This circuit breaker is configured for 1-phase operation and includes 2 poles. It features long-time and instantaneous functions while maintaining an interrupt rating of 10 kA. The QBA222004 operates

Call
4.5

QBA222251

This circuit breaker has a 10 kA interrupt rating and is compatible with frequencies ranging from 50 to 60 Hz. It features two poles and is designed for I-Line mounting. Weighing 2.173 kg, it can func

Call
4.5

QBL32080

This circuit breaker is constructed with three poles and has an interrupt rating of 10 kA for effective fault management. It functions through both long-time and instantaneous modes. Environmental sui

In Stock Ships Tomorrow
5.0

QBL32110

This circuit breaker operates at a rated voltage of 240 VAC and is suitable for three-phase connections with three poles. It offers LI functions for long-time and instantaneous protection. With a ther

In Stock Ships Today
5.0

QBL32100

This circuit breaker offers an interrupt rating of 10 kA, making it suitable for various applications. It operates effectively within a temperature range of 0°C to 40°C and can tolerate humidity level

In Stock Ships Tomorrow
4.5
Showing 11-20 of 28 results