Square D Circuit Breakers

Square D Circuit Breakers

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Items 1 to 36 of 42 total

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  • Square D SQD QOU110

    Square D SQD QOU110 1-P, 10A, 120/240V, type QOU Circuit Breaker

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    $7.77
  • Square D SQD QOU1100

    Square D SQD QOU1100 1-P, 100A, 120/240V, type QOU Circuit Breaker

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  • Square D SQD QOU115

    Square D SQD QOU115 1-P, 15A, 120/240V, type QOU Circuit Breaker

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    $7.77
  • Square D SQD QOU120

    Square D SQD QOU120 1-P, 20A, 120/240V, type QOU Circuit Breaker

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    $9.83
  • Square D SQD QOU125

    Square D SQD QOU125 1-P, 25A, 120/240V, type QOU Circuit Breaker

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    $7.77
  • Square D SQD QOU130

    Square D SQD QOU130 1-P, 30A, 120/240V, type QOU Circuit Breaker

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    $11.51
  • Square D SQD QOU135

    Square D SQD QOU135 1-P, 35A, 120/240V, type QOU Circuit Breaker

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    $7.77
  • Square D SQD QOU140

    Square D SQD QOU140 1-P, 40A, 120/240V, type QOU Circuit Breaker

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    $7.77
  • Square D SQD QOU145

    Square D SQD QOU145 1-P, 45A, 120/240V, type QOU Circuit Breaker

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    $7.77
  • Square D SQD QOU150

    Square D SQD QOU150 1-P, 50A, 120/240V, type QOU Circuit Breaker

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    $7.77
  • Square D SQD QOU160

    Square D SQD QOU160 1-P, 60A, 120/240V, type QOU Circuit Breaker

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    $7.77
  • Square D SQD QOU170

    Square D SQD QOU170 1-P, 70A, 120/240V, type QOU Circuit Breaker

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    $15.08
  • Square D SQD QOU180

    Square D SQD QOU180 1-P, 80A, 120/240V, type QOU Circuit Breaker

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    $33.93
  • Square D SQD QOU190

    Square D SQD QOU190 1-P, 90A, 120/240V, type QOU Circuit Breaker

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    $33.93
  • Square D SQD QOU210

    Square D SQD QOU210 2-P, 10A, 120/240V, type QOU Circuit Breaker

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    $16.82
  • Square D SQD QOU2100

    Square D SQD QOU2100 2-P, 100A, 120/240V, type QOU Circuit Breaker

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    $68.33
  • Square D SQD QOU215

    Square D SQD QOU215 2-P, 15A, 120/240V, type QOU Circuit Breaker

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  • Square D SQD QOU220

    Square D SQD QOU220 2-P, 20A, 120/240V, type QOU Circuit Breaker

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    $15.00
  • Square D SQD QOU225

    Square D SQD QOU225 2-P, 25A, 120/240V, type QOU Circuit Breaker

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    $16.82
  • Square D SQD QOU230

    Square D SQD QOU230 2-P, 30A, 120/240V, type QOU Circuit Breaker

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    $26.29
  • Square D SQD QOU235

    Square D SQD QOU235 2-P, 35A, 120/240V, type QOU Circuit Breaker

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  • Square D SQD QOU240

    Square D SQD QOU240 2-P, 40A, 120/240V, type QOU Circuit Breaker

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    $16.82
  • Square D SQD QOU245

    Square D SQD QOU245 2-P, 45A, 120/240V, type QOU Circuit Breaker

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    $16.82
  • Square D SQD QOU250

    Square D SQD QOU250 2-P, 50A, 120/240V, type QOU Circuit Breaker

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    $23.61
  • Square D SQD QOU260

    Square D SQD QOU260 2-P, 60A, 120/240V, type QOU Circuit Breaker

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    $21.30
  • Square D SQD QOU270

    Square D SQD QOU270 2-P, 70A, 120/240V, type QOU Circuit Breaker

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    $33.06
  • Square D SQD QOU280

    Square D SQD QOU280 2-P, 80A, 120/240V, type QOU Circuit Breaker

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    $47.56
  • Square D SQD QOU290

    Square D SQD QOU290 2-P, 90A, 120/240V, type QOU Circuit Breaker

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    $47.56
  • Square D SQD QOU310

    Square D SQD QOU310 3-P, 10A, 240V, type QOU Circuit Breaker

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    $55.10
  • Square D SQD QOU3100

    Square D SQD QOU3100 3-P, 100A, 240V, type QOU Circuit Breaker

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    $80.33
  • Square D SQD QOU315

    Square D SQD QOU315 3-P, 15A, 240V, type QOU Circuit Breaker

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    $55.10
  • Square D SQD QOU320

    Square D SQD QOU320 3-P, 20A, 240V, type QOU Circuit Breaker

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    $55.10
  • Square D SQD QOU325

    Square D SQD QOU325 3-P, 25A, 240V, type QOU Circuit Breaker

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    $55.10
  • Square D SQD QOU330

    Square D SQD QOU330 3-P, 30A, 240V, type QOU Circuit Breaker

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    $55.10
  • Square D SQD QOU335

    Square D SQD QOU335 3-P, 35A, 240V, type QOU Circuit Breaker

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    $55.10
  • Square D SQD QOU340

    Square D SQD QOU340 3-P, 40A, 240V, type QOU Circuit Breaker

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    $55.10

Items 1 to 36 of 42 total

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Square D circuit breakers are available in countless different configurations, reconditioned and new. We list hundreds of models in our online catalog, including popular models like the XO120, EDB34030, KA36200, QOB230, and FA34100, as well as various other models, new, used, and professionally reconditioned. If you're having a difficult time finding the exact part you need, or you're looking for an obsolete/discontinued model that we don't list on our site, CALL US and we'll help you get the Square D breaker you need, quickly. Keep in mind that we offer same day shipping and overnight shipping options.

Square D is an American manufacturer of equipment used to control and distribute electric power headquartered in Palatine, Illinois.

Square D was founded in 1903 in Detroit, Michigan by Bryson Dexter Horton who is credited with the invention of the safety switch which encased high voltage switches and started the company's main line of business of circuit breakers and encased control panels. In 1991, the company was acquired and became a subsidiary of Schneider Electric. Products and systems developed by the Square D brand are present in all sectors of activity, from circuit breakers to monitoring and control systems. The tertiary and residential building sectors are major consumers of Square D product.