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Square D

Square D

Square D products span a wide range of applications, from circuit breakers to control systems. The Square D company was founded well over a century ago and brings its expertise and history of innovation to the products they design and manufacture today. Square D contactors, starters, and other items are most commonly used in tertiary and residential building installations.

Improve Depot is an authorized vendor of the Square D brand. These Square D starters and contactors are some of the finest power distribution equipment options on the market. They meet most applicable standards, allowing for safe and effective use as well as an easier installation on behalf of the contractor.

One reason why we value the Square D brand is because the company creates long-lasting products. Most Square D starters and contactors have a lifespan of hundreds of thousands of operations. These can help a contractor anticipate when a contactor or starter might need to be replaced. We also do our best here at Improve Depot to help explain potential applications for each contactor and starter.

The Square D contactors in the Improve Depot inventory come in many different variations so that you can find the right item for your job at hand. This includes various pole assemblies, amperage, voltages, product types, and much more. Our Square D starter choices are just as varied, offering a wide range of options for the professional electrician. If you need help tracking down a compatible Square D contactor or starter, don't hesitate to contact a member of the Improve Depot team. We'll help you find exactly what you need.

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$2.99

Square D QO1LO QO Handle Lock-Off Kit

Square D

DescriptionQO circuit breaker Handle Lockoff Kit. Clip for fixing QO 1-pole handle in "ON" or "OFF" position. This Lock-Off Kit is for use with QO ...

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$2.99
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$2.99

Square D QO1HT QO Circuit Breaker Handle Ties (3 per Pack)

Square D

DescriptionConvert any 2 adjacent single pole breakers to an independent trip double pole circuit breaker with the QO Circuit Breaker Handle Tie. T...

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$2.99
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$48.09

Square D QO1515 QO 2-15 Amp Single-Pole Tandem Circuit Breaker

Square D

DescriptionThe QO 15 Amp Tandem Single-Pole Circuit Breaker features 2 circuits in the space of 1. The breaker has 2 tandem poles, each rated for u...

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$48.09
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$10.49

Square D QO150 Miniature Circuit Breaker 120/240V 50A

Square D

DescriptionThe industry leader in circuit protection is easily recognized by the industry's only trip indicator?the red Visi-Trip? Indicator makes ...

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$10.49
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$8.59

Square D QO130 QO 30 Amp Single-Pole Circuit Breaker

Square D

DescriptionThe Square D by Schneider Electric QO 30 Amp One-Pole Circuit Breaker is intended for overload and short-circuit protection of your elec...

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$8.59
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$8.59

Square D QO125 QO 125 Amp One-Pole Circuit Breaker

Square D

DescriptionThe Square D by Schneider Electric QO 125 Amp Two-Pole Circuit Breaker is intended for overload and short-circuit protection of your ele...

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$8.59
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$86.20

Square D QO120GFI QO Qwik-Gard 20 Amp Single-Pole GFCI Circuit Breaker

Square D

DescriptionThe Square D by Schneider Electric QO Qwik-Gard 20 Amp One-Pole GFCI Circuit Breaker is intended for protection of entire branch circuit...

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$86.20
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$56.40

Square D QO120CAFI QO 20 Amp Single-Pole CAFCI Circuit Breaker

Square D

DescriptionThe Square D by Schneider Electric QO 20 Amp Single-Pole Combination Arc-Fault Circuit Interrupting (CAFCI) Circuit Breaker is for use t...

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$56.40
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$10.20

Square D QO120 QO 20-Amp Single-Pole Circuit Breaker

Square D

DescriptionThe QO 20 Amp Single-Pole Circuit Breaker is designed for overload and over-current protection of your electrical system through its the...

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$10.20
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$86.20

Square D QO115GFI QO Qwik-Gard 15 Amp Single-Pole GFCI Circuit Breaker

Square D

DescriptionThe Square D by Schneider Electric QO Qwik-Gard 15 Amp One-Pole GFCI Circuit Breaker is intended for protection of entire branch circuit...

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$86.20
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$8.59

Square D QO115 QO 15 Amp Single-Pole Circuit Breaker

Square D

DescriptionThe Square D by Schneider Electric QO 15 Amp One-Pole Circuit Breaker is intended for overload and short-circuit protection of your elec...

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$8.59
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$6.99

Square D PK9GTA 9 Terminal Ground Bar Kit

Square D

DescriptionThe Square D By Schneider Electric Ground Bar Kit is an important accessory in your home or business electrical load center. This 9 Term...

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$6.99
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$5.99

Square D PK7GTA 7 Terminal Ground Bar Kit

Square D

DescriptionThe Square D by Schneider Electric Ground Bar Kit is an important accessory in your home or business electrical load center. This 7 Term...

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$5.99
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$5.99

Square D PK4GTA 4-Terminal Ground Bar Kit

Square D

DescriptionThe aluminum Square D by Schneider Electric 4 Terminal Ground Bar Kit is used in load centers, CSED devices and NQOD and NF panel boards...

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$5.99
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$4.99

Square D PK3GTA1 3 Terminal Ground Bar Kit

Square D

DescriptionThe Square D by Schneider Electric Ground Bar Kit is an important accessory in your home or business electrical load center. This 3 Term...

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$4.99
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$5.99

Square D PK2MB QO Load Center Main Breaker Retaining Kit

Square D

DescriptionUse this Square D Circuit Breaker Retaining Kit to secure a circuit breaker to a load center's interior when used as a back-fed main. Th...

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$5.99
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$9.59

Square D PK23GTA 23 Terminal Load Center Ground Bar Kit

Square D

DescriptionThe Square D by Schneider Electric Ground Bar Kit is an important accessory in your home or business electrical load center. The aluminu...

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$9.59
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$8.59

Square D PK18GTA 18 Terminal Ground Bar Kit

Square D

DescriptionThe Square D By Schneider Electric Ground Bar Kit is an important accessory in your home or business electrical load center. The aluminu...

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$8.59
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$7.69

Square D PK15GTA 15 Terminal Ground Bar Kit

Square D

DescriptionThe Square D by Schneider Electric Ground Bar Kit is an important accessory in your home or business electrical load center. The aluminu...

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$7.69
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$7.49

Square D PK12GTA 12 Terminal Ground Bar Kit

Square D

DescriptionThe Square D by Schneider Electric Ground Bar Kit is an important accessory in your home or business electrical load center. The aluminu...

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$7.49
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$4.99

Square D LK70AN Neutral Lug AL/CU

Square D

DescriptionFor field installation, use this Square D by Schneider Electric Neutral Lug. It is compatible with aluminum or copper wire #6 - 2/0. It ...

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$4.99
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$5.99

Square D LK100AN 100 Amp Auxiliary Neutral Lug Kit

Square D

DescriptionFor field installation, use this Square D by Schneider Electric Breaker Box Neutral Lug. It is compatible with aluminum or copper wire #...

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$5.99
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$2.99

Square D HOMTHT Handle Tie for Homeline Tandem Circuit Breakers

Square D

DescriptionConvert any 2 adjacent tandem single pole breakers to an independent trip double pole circuit breaker with the Homeline Circuit Breaker ...

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$2.99
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$21.09

Square D HOMT2020250 Homeline 2-20 Amp Single-Pole 1-50 Amp Two-Pole Quad Circuit Breaker

Square D

DescriptionHomeLine? Circuit Breakers - with exclusive Qwik-Open? protection standard Exclusive features make Homeline? circuit breakers the best v...

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$21.09
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$20.19

Square D HOMT2020230 Homeline 2-20-Amp Single-Pole 1-30-Amp Two-Pole Quad Circuit Breaker

Square D

DescriptionThe Square D by Schneider Electric Homeline Quad-Pole Tandem Circuit Breaker consists of (2) single-pole, 20 Amp and (1) double-pole, 30...

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$20.19
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$24.60

Square D HOMT2020220 Homeline 2-20 Amp Single-Pole 1-20 Amp Two-Pole Quad Circuit Breaker

Square D

DescriptionHomeLine? Circuit Breakers - with exclusive Qwik-Open? protection standardExclusive features make Homeline? circuit breakers the best va...

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$24.60
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$9.09

Square D HOMT2020 Homeline 2-20 Amp Single-Pole Tandem Circuit Breaker

Square D

DescriptionThe Square D by Schneider Electric Homeline Single-Pole Tandem Circuit Breaker consists of (2) single-pole, 20 Amp breakers in 1 pole sp...

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$9.09
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$9.09

Square D HOMT1520 Homeline 1-15 Amp 1-20 Amp Single-Pole Tandem Circuit Breaker

Square D

DescriptionThe Square D by Schneider Electric Homeline Single-Pole Tandem Circuit Breaker consists of (1) single-pole, 15 Amp and (1) single-pole, ...

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$9.09
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$24.60

Square D HOMT1515230 Homeline 2-15-Amp Single-Pole 1-30-Amp Two-Pole Quad Circuit Breaker

Square D

DescriptionThe Square D by Schneider Electric Homeline Quad-Pole Tandem Circuit Breaker consists of (2) single-pole, 15 Amp and (1) double-pole, 30...

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$24.60
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$20.19

Square D HOMT1515220 Homeline 2-15-Amp Single-Pole 1-20-Amp Two-Pole Quad Circuit Breaker

Square D

DescriptionThe Square D by Schneider Electric Homeline Quad-Pole Tandem Circuit Breaker consists of (2) single-pole, 15 Amp and (1) double-pole, 20...

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$20.19
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$9.09

Square D HOMT1515 Homeline 2-15 Amp Single-Pole Tandem Circuit Breaker

Square D

DescriptionThe Square D by Schneider Electric Homeline Single-Pole Tandem Circuit Breaker consists of (2) single-pole, 15 Amp breakers in 1 pole sp...

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$9.09
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$5.99

Square D HOMFP Homeline Filler Plates (3-Pack)

Square D

DescriptionHomeline Filler Plates fill openings in load center covers if twist-out is removed in error. These are for use only in Homeline Load Cen...

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$5.99
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$6.99

Square D HOM70AN Homeline-70 Amp Auxiliary Neutral Lug Kit

Square D

DescriptionUse this Homeline Breaker Box Neutral Lug with Homeline load centers that came before the S1 series. This kit helps eliminate the need f...

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$6.99
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$21.29

Square D HOM612L100S Homeline 100 Amp 6-Space 12-Circuit Indoor Surface Mount Main Lugs Load Center with Cover

Square D

DescriptionThe Square D Homeline 100 Amp 6-Space 12-Circuit Indoor Surface Mount Convertible Main Lugs Load Center is UL listed for residential and...

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$21.29
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$32.49

Square D HOM612L100RB Homeline 100 Amp 6-Space 12-Circuit Outdoor Main Lugs Load Center

Square D

DescriptionThe Square D Homeline 100 Amp 6-Space 12-Circuit Outdoor Convertible Main Lugs Load Center is UL listed for residential and commercial p...

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$32.49
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$23.29

Square D HOM612L100F Homeline 100 Amp 6-Space 12-Circuit Indoor Flush Mount Main Lugs Load Center with Cover No Door

Square D

DescriptionThe Square D Homeline 100 Amp 6-Space 12-Circuit Indoor Flush Mount Convertible Main Lugs Load Center is UL listed for residential and c...

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$23.29
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