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Siemens Q120 1-Pole 120 Volt Breaker Siemens
  • Edmonton Stock: 40

      Circuit Breaker · 20A 1-Pole 120V · Type QP Plug-In 10 kAIC · Siemens Q120

      SKU: Q120
      20A 1-pole Siemens Type QP plug-in circuit breaker for 120V branch circuits in compatible Siemens loadcentres. Commonly used for 20A circuits with #12 AWG copper conductors; actual conductor sizing, load and panel compatibility must be confirmed to local code and the loadcentre label.
      Siemens Breakers
      12   – Loyalty Rewards
       
      • $12.78
      Stock in Edmonton (40) Stock at Manufacturer ()
      Delivered to you by Sep 18 (Within Western Canada)
      If shipping issues arise, contact us and we’ll work with the courier to keep your job on track.

      What this product is for

      The Siemens Q120 is a 20A, 1-pole thermal-magnetic plug-in circuit breaker used to protect 120V branch circuits against overloads and short circuits in compatible Siemens loadcentres. It is a Type QP breaker with a 10 kA interrupting rating and 1 in (25.4 mm) pole width.

      Use for

      Use this breaker for new or replacement 120V branch circuits where the panel label calls for Siemens Type QP or listed compatible breakers. Typical applications include general receptacle and lighting circuits, and other 20A single-pole loads within the breaker and panel rating.

      Avoid for

      Avoid using this breaker in panels not specifically marked for Siemens Type QP breakers, or where a GFCI, AFCI, CAFCI or 2-pole breaker is required. Do not use it as a substitute for a different breaker family based only on physical fit.

      Best for

      Best for electricians and contractors servicing Siemens residential distribution equipment who need a standard 20A single-pole breaker with full-size 1 in (25.4 mm) format and straightforward replacement matching.

      Installed in

      Installed in compatible Siemens loadcentres, including Canadian applications commonly referencing EQL, SEQ and EQG series where the panel labelling permits this breaker. Always verify the exact loadcentre series and approved breaker types before ordering or installation.

      Why this product exists

      This breaker provides standard branch-circuit protection for 120V circuits using a common 20A single-pole format. For trade selection, a 20A branch circuit is typically paired with #12 AWG copper conductors. Continuous load is typically limited to 80% of breaker rating, or about 16A. Actual performance depends on installation conditions, conductor type, termination temperature ratings, load profile and local electrical code.

      Compared with similar products

      Compared with tandem or slim breakers, the Q120 is a full-width 1 in (25.4 mm) single-pole breaker. Compared with GFCI or AFCI Siemens breakers, this is a standard thermal-magnetic breaker intended where additional fault protection is not required by code or design.

      Specifications

      • Manufacturer: Siemens
      • Part number: Q120
      • Breaker type: Type QP
      • Pole configuration: 1-pole
      • Ampere rating: 20A
      • Voltage rating: 120V
      • Interrupting rating: 10 kAIC
      • Mounting style: Plug-in / clip-on
      • Module width: 1 in per pole (25.4 mm)
      • Protection type: Thermal-magnetic
      • Typical application: 120V branch circuits in compatible Siemens loadcentres
      • Siemens Q120 Specification Page.pdf171.8 kB
        Download the Siemens Q120 Circuit Breaker Data Sheet for detailed specifications and technical information tailored for Canadian electricians and contractors. This PDF covers electrical ratings, dimensions, installation guidelines, and operational features, ensuring compliance with Canadian standards. Find comprehensive details on amperage, voltage, and interrupting capacity, making it an essential resource for residential and commercial electrical projects across Canada. Optimize your work with trusted Siemens circuit breaker data designed to meet Canadian requirements.
      • Siemens Q120 Installation Guide.pdf202.7 kB
        Access the Siemens Q120 Circuit Breaker Installation Guide for step-by-step instructions and best practices tailored to Canadian electricians and contractors. This comprehensive PDF includes safety precautions, wiring diagrams, and detailed installation procedures to ensure compliance with Canadian electrical codes. Ideal for both residential and commercial projects, this guide provides clear guidance for installing Siemens Q120 circuit breakers effectively and safely. Optimize your installation process with trusted Siemens resources designed for the Canadian market.
        • SKU
          Q120
        • Weight
          1.5 lbs
        • UPC Code
          783643148192
        • Manufacturer Part #
          Q120
      • Package Qty
        12
      • Packaging
        Carton
      • Brand
        Siemens Breakers
      • Warranty
        5 year
      • Electrical
        • Poles
          1 Pole
        • Amps
          20 Amp
        • Voltage
          120
        • Interrupt Rating (AIC)
          10
      • Physical
        • Mounting
          Push on
        • Width
          1"
        • Breaker Type
          Standard

      Minimum Order $20

      We accept the following payment methods:

      Accepted payment methods

      Credit Card can offer cardholders convenience, security, rewards, and the opportunity to build a healthy credit history.

      Click here for Contractor Cash Account


      Trade Credit is a standard financing option for contractors and construction companies to obtain supplies and keep their projects moving. We offer 30-day credit terms to trade contractors on approved applications only. 

      Click here for Contractor Credit Account 


      Standard Shipping-Free on orders over $500 in Metropolitan Areas / Subject to $750 in Rural Areas.


      Minimum Order Is $20

      Freight Surcharge Apply To Oversized/Over-Weight Items(Not Limited To):
       

      • PVC and EMT Pipe 
      • Wire and Cable 
      • Items over 48 inches in length 

      Surcharges are applied to items on an individual basis regardless if the rest of the order meets prepaid levels. If a freight line appears at the time of check out it only applies to the Items carrying a surcharge and not the entire basket of goods.

      Shipping Options:

      • A courier can deliver to your home, office, or your job site
      • Pick up at local depot near you (applies to the following locations)

      Edmonton Warehouse 8135 Roper Rd Edmonton, T6E 6S4, AB 

      Orders are typically delivered within two to eleven business days. The transit time begins the first full shipping day after your order leaves our warehouse. Please allow an additional 2-5 days for delivery to remote locations, additional fees may apply.

      THE FOLLOWING APPLIES TO STANDARD SHIPPING OPTIONS

      • We cannot deliver to P.O. boxes.
      • A signature may be required for shipments over $500.
      • No weekend delivery.
      • Wire & cable, EMT or PVC conduit, tube lamps 4ft or greater, and 10ft ground rods & mast pipes have special conditions.

      Standard Shipping cost on orders less than $499

      Total shipping cost = "Per Shipment" cost + "Per Item" cost.  The "per item" cost is listed in terms of price per pound.

       

      Product Group

      Per Shipment*

      Per Item

      Boxes

      $6.99

      $1.49/lb

      Conduit & Raceway

      $149.99

      $2.49/lb

      Connectors & Fittings

      $5.99

      $1.19/lb

      Data & Structured Home

      $5.99

      $1.19/lb

      Distribution Equipment

      $5.99

      $1.19/lb

      Emergency Lighting

      $6.99

      $1.49/lb

      Heating & Ventilation

      $6.99

      $1.49/lb

      Lighting Controls

      $5.99

      $1.19/lb

      Lighting Indoor

      $6.99

      $1.49/lb

      Lighting Outdoor

      $6.99

      $1.49/lb

      Tools

      $4.99

      $.99/lb

      Wire & Cable

      $49.99

      $2.29/lb

      Wiring Devices

      $5.99

      $1.19/lb

      Any combination of the above items

      Highest applicable per-shipment charge

      As above

      Effective Date: August, 15, 1998(Updated August 2026)

      At Evolt Electrical Supply, customer satisfaction is our top priority. Please review our return policy below:

      Returns

      Defective Items:

      • If you receive a defective item, you may return it for a replacement or refund within 30 days of purchase.
      • To initiate a return, please contact our customer service team with your order number and a description of the defect.

      Non-Defective Items:

      • We do not accept returns for non-defective items. All sales are final once the product is shipped or ordered from the manufacturer. In certain circumstances we may amend this so feel free to contact our customer service team.

      Return Process

      Authorization:

      • Before returning any items, you must obtain a Return Merchandise Authorization (RMA) number from our customer service team. Returns without an RMA number will not be accepted.
      • Backordered items can not be cancelled if the item is in transit from the manufacturer, contact us to review.

      Shipping:

      • Customers are responsible for the return shipping costs. We recommend using a trackable shipping service or purchasing shipping insurance.

      Condition:

      • Returned items must be in their original packaging and condition. Any items returned damaged due to improper packaging or misuse will not be eligible for a refund or replacement.

      Refunds

      • Once we receive and inspect your returned item, we will notify you of the approval or rejection of your refund.
      • Approved refunds will be processed within [7] business days and a credit will automatically be applied to your original method of payment.

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