Section 9: Panelboards PDF

Section 9: Panelboards PDF

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QOB Standard Interrupting Circuit Breakers

Schneider Electric’s QOB Standard Interrupting Bolt-On Circuit Breakers are molded-case circuit breakers designed for reliable branch circuit protection in commercial and industrial electrical distribution systems. Available in 1-pole, 2-pole, and 3-pole configurations, the QOB series supports applications from lighting and power distribution to HVAC and refrigeration equipment. These breakers offer 10,000 AIR interrupting capacity for AC systems, selected 48 Vdc ratings, and ampere ratings ranging from 10 A to 125 A, making them suitable for a wide variety of panelboard installations.

Standard Interrupting QOB Circuit Breakers

The QOB circuit breakers are rated for 120 Vac, 120/240 Vac, and 240 Vac applications, with a standard 10 kA AIR interrupting rating and selected models offering 5 kA AIR at 48 Vdc. Typical uses include branch circuit protection, lighting circuits, motor loads, and HVAC equipment. Certain models carry UL-listed SWD ratings for fluorescent lighting switching and HACR ratings for heating, air-conditioning, and refrigeration equipment, providing flexibility for commercial and industrial electrical systems.

For additional information, refer to NO Panelboards online.

Standard Interrupting QOB 10,000 AIR Circuit Breakers

Ampere

Rating [1]

One-pole

Two-pole—Common Trip

Two-pole—

Common Trip [2]

Three-pole—

Common Trip

Catalog No.

Catalog No.

Catalog No.

Catalog No.

QOB Bolt-On

120 Vac—10 k AIR[3]

120/240 Vac—10 k AIR[3]
48 Vdc—5 k AIR

240 Vac—10 k AIR[3]

240 Vac—10 k AIR [3]

 10 A

QOB110

QOB210[4]

—

QOB310

 15 A

QOB115[5][6]

QOB215[6][4]

QOB215H

QOB315[6]

 20 A

QOB120[5][6]

QOB220[6][4]

QOB220H

QOB320[6]

 25 A

QOB125[6]

QOB225[6][4]

QOB225H

QOB325[6]

 30 A

QOB130[6]

QOB230[6][4]

QOB230H

QOB330[6]

 35 A

QOB135[6]

QOB235[6][4]

—

QOB335[6]

 40 A

QOB140[6]

QOB240[6][4]

QOB240H

QOB340[6]

 45 A

QOB145[6]

QOB245[6][4]

—

QOB345[6]

 50 A

QOB150[6]

QOB250[6][4]

QOB250H

QOB350[6]

 60 A

QOB160[6]

QOB260[6][4]

QOB260H

QOB360[6]

 70 A

QOB170[6]

QOB270[6]

QOB270H

QOB370[6]

 80 A

—

QOB280[6] 

QOB280H

QOB380[6]

 90 A

—

QOB290[6] 

QOB290H

QOB390[6] 

100 A

—

QOB2100[6] 

QOB2100H

QOB3100[6] 

110 A

—

QOB2110[6] 

—

—

125 A

—

QOB2125[6] 

—

—

Molded Case Switch 60 A max—240 Vac

QOB200

—

QOB300

Molded Case Switch 100 A max—240 Vac

QOB2000

—

QOB3000

Footnotes

  1. 10–30 A circuit breakers are suitable for use with 60°C or 75°C conductors. 35–60 A circuit breakers are suitable for use with 75°C conductors.
  2. UL Listed 5,000 AIR on 3Ø corner grounded delta systems.
  3. May be applied in 208Y/120 Vac systems.
  4. DC Rating is only available on indicated products on 2W ungrounded systems. 48VDC rated 2P QO(B) Breakers would have 5272 suffix.(ex. QOB2xx5272).
  5. UL Listed as SWD (switching duty) rated suitable for switching 120 Vac fluorescent lighting loads.
  6. UL Listed as HACR type for use with air conditioning, heating, and refrigeration equipment having motor group combinations and marked for use with HACR type circuit breakers.
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