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Internet # 100044919

Model # Q120U

Store SKU # 991041

Store SO SKU #1002199811

20 Amp Single-Pole Type QP Circuit Breaker

$7.97
  • Provides a manual means of energizing and de-energizing a circuit
  • Easy plug in connections in Siemens load centers and meter combos
  • Accepts #14-6 AWG Cu or #14-6 AWG Al wire
  • View More Details

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Product Details

About This Product

Siemens offers a wide array of thermal-magnetic circuit breakers that are the key element for overload and short-circuit protection of your home's electrical system. To provide additional protection Siemens offers circuit breakers to protect against severe electrical shock or electrocution, mitigate the risk of electrical fires and protect against damaging surges and Voltage spikes. Circuit breakers are intended for switching and protection of your home's wiring from high temperatures caused by excess current higher than the rating of the wire. While thermal-magnetic circuit breakers are the key element for overload and short-circuit protection of your electrical system, there are potentially dangerous conditions that do not involve over current.

Highlights

  • Single pole, 20 Amp 120-Volt type QP interchangeable circuit breaker
  • 10,000 AIC interrupting rating
  • Siemens type QP circuit breakers provide easy plug-in connections in Siemens enclosures and the time saving insta-wire feature
  • Compatible with Siemens PL and ES series load centers
  • Use for overload and short-circuit protection of your electrical system
  • Thermal-magnetic
  • Return Policy
  • California residents
     see Prop 65 WARNINGS

Product Information

Internet # 100044919

Model # Q120U

Store SKU # 991041

Store SO SKU #1002199811

Specifications

Dimensions

Product Depth (in.)

3 in

Product Width (in.)

1 in

Details

AIC Rating

10

Breaker Type

Standard

Connection Type

Non-Neutral

Interruption Type

Standard Trip

Maximum Amperage (A)

20 A

Mounting Type

Plug-On

Number of Poles

Single

Number of Spaces

0

Pack Size

1

Product Weight (lb.)

.50 lb

Returnable

90-Day

Series Type

QP

Trip Unit

Thermal Magnetic

Voltage (V)

120/240 V

Warranty / Certifications

Certifications and Listings

UL Listed

Manufacturer Warranty

Lifetime

Questions & Answers

I have a Murray LC112DS load center that I want to install a new 15A in for a new circuit to service a new microwave. Is a 15A 120V Siemens single pole Type QP circuit breaker UL approved for this installation?
ByJun 12, 2026
1 Answer | 
Answer This Question

Yes the Murray MP breakers were replaced QP so if the label states MP breakers then yes you can use the QP type Q115.

By|Jun 15, 2026


    Will this work in a Cutlter Hammer box? My box has black breakers in it.
    ByApr 28, 2026
    1 Answer | 
    Answer This Question

    We do not test our breakers in our competitors units so you will have to contact Cutler Hammer to see if our QP style breakers are UL listed for use in their unit.

    By|Apr 28, 2026


      Will this work with GE or Square D panel
      ByApr 27, 2026
      1 Answer | 
      Answer This Question

      You will have to contact GE and/or Square D to see what breakers are UL listed for their panels/load centers as we do not test our breakers in our competitors units.

      By|Apr 27, 2026


        will this fit a generac panel ?
        ByMar 12, 2026
        1 Answer | 
        Answer This Question

        No, this breaker is UL approved to be installed in Siemens panels only.

        By|Mar 13, 2026


          Why are these 20a breakers tripping without any apparent cause?
          ByMar 12, 2026
          1 Answer | 
          Answer This Question

          Please consult your local electrician or contact our Tech Support line at 800-333-7421 for troubleshooting as possible tripping solutions.

          By|Mar 12, 2026


            What gauge wire is needed for 25amp breaker?
            ByFeb 25, 2026
            0 Answer | 
            Answer This Question

            Can this be used in a Murray panel to replace a 20a MP-T?
            ByFeb 13, 2026
            0 Answer | 
            Answer This Question

            Will this be compatible with a 1992 Siemens breaker 15amp plug in breaker ite q115
            ByFeb 9, 2026
            1 Answer | 
            Answer This Question

            Yes

            By|Feb 12, 2026


              Viewing 1-8 of 137

              Customer Reviews

              4.7 out of 5

              • 4.7 out of 815 reviews
              • 97% recommend this product
              Filter by:
              Showing 1-10 of 815 reviews
              Be sure breakers are compatible they are not all interchangeable. Siemens box requires Siemens breaker to ensure proper fit.
              by
              • Verified Purchase
              These fit right in to replace old Murray MT. My...
              These fit right in to replace old Murray MT. My electricity was out in half 2nd floor, electrician said old breakers were good. I had already ordered & received new ones(delivered to my front door free, yay!) so I "whined" saying I just wanted the new ones put in anyway. So, # 4 replaced with 15amp & #6 with 20amp. Yay! Electricity back on for all 5 ceiling lites, a bath exhaust fan & all 6 bedroom outlets! Yippee! I'm smarter than the smirking electrician! LOL!
              by
              • Verified Purchase
              2 found this review helpful
              The screw was hard to turn! I broke a corner piece trying to screw it in with a bigger screwdriver!
              The screw was hard to turn! I broke a corner piece trying to screw it in with a bigger screwdriver!
              by
              • Verified Purchase
              • Recommended
              1 found this review helpful
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              It is an exact match for the breakers found in my Reliance transfer switch.
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              Showing 1-10 of 815 reviews

              Compare Key Features

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              Product Snapshot

              Ideal for homeowners needing reliable overload and short-circuit protection.
              Ideal for homeowners needing reliable circuit protection, ensuring safety and peace of mind.
              Ideal for homeowners who want reliable overload and short-circuit protection with a clear trip indicator.
              Ideal for homeowners needing reliable overload and over-current protection with a clear trip indicator.

              Maximum Amperage

              20 Amps
              20 Amp
              15 A
              20 A

              Number of Poles

              Single pole
              Single
              1-pole
              1-pole

              Trip Curve

              Thermal-magnetic
              Thermal Magnetic, Standard Trip
              Standard Trip
              Thermal-magnetic

              Interrupting Rating

              10, 000 AIC
              10 kAIC
              10, 000 AIR
              10, 000 AIR

              Voltage Rating

              120/240 Volts
              120/240-Volt
              120/240 V
              120/240 V