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Siemens QF120P GFCI Miniature Circuit Breaker

  • 20A
  • 1 Pole
  • Plug-On
Siemens QF120P
GFCI Miniature Circuit Breaker
Brand Siemens
SKU QF120P
Select Item Condition
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  • 20A
  • 1 Pole
  • Plug-On

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Siemens QF120P 1 Pole Circuit Breaker Ground Fault

Siemens QF120P - 20A GFCI Miniature Circuit Breaker

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$114.55 In Stock

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Description

Functioning as a drop-in replacement for the older QF120 model, this 20-amp single-pole interrupter provides essential 5mA Class A ground-fault safety. It mounts into traditional Siemens EQ, ES, PL, and Ultimate load centers utilizing a standard pigtail neutral connection. Engineered for residential wet locations like kitchens and bathrooms, the 10kAIC rated unit features automated self-testing to ensure ongoing reliability and compliance with the latest National Electrical Code requirements.

Specifications

Key specifications
Brand Siemens
Part Number QF120P
Series QF
Amperage 20A
Poles 1
Mounting Style Plug-On
Voltage 120VAC
Phase 1
AIC Rating 10kA @ 120VAC
Fit and installation
Frame Type QF
Terminal Type Lugs
For Use With Siemens EQ, ES, PL, Ultimate Load Centers
Wire Gauge 14-8 AWG (Cu), 12-8 AWG (Al)
Max Wire 8 AWG
Min Wire 14 AWG (Cu), 12 AWG (Al)
Protection and operation
Trip Technology Thermal Magnetic
Trip Function Code LIG
Trip Function Long-Time, Instantaneous, Ground Fault
Trip Adjustability Fixed
Standards and features
Special Classification GFCI
Available Options Padlock Attachment
Accessories Pigtail Neutral
Standards CSA C22.2 No. 144, UL 489, UL 943
Approval CSA, UL
Temp Rating 40C
Construction Features HACR Rated, SWD Rated, Self-Test

Product FAQs

6 answers
Which load centers are compatible with the Siemens QF120P circuit breaker?

This breaker is designed for use in Siemens EQ, ES, PL, and Ultimate load centers. It mounts using a standard plug-in connection.

Does the QF120P require a plug-on neutral load center?

No. This breaker features a standard pigtail neutral connection. The white pigtail wire must be manually connected to the panel neutral bus bar for the ground fault protection to function.

What level of ground fault protection does the QF120P provide?

It provides Class A ground fault protection, which trips when a ground fault of 5mA is detected. This meets NEC requirements for personnel protection in wet locations like kitchens and bathrooms.

Does this breaker include an automated self-test feature?

Yes. It features a self-test and lockout function that continuously monitors the device to ensure the ground fault protection is operating correctly, complying with current UL 943 standards.

Can the QF120P replace older Siemens GFCI breakers?

Yes, it functions as a direct drop-in replacement for the older QF120 model, upgrading the circuit with modern self-testing capabilities.

Is the QF120P rated for HACR and SWD applications?

Yes, this breaker is HACR rated for use with heating, air conditioning, and refrigeration equipment, and SWD rated for switching duty applications.

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Reviews

4.9
Rated 4.9 out of 5 stars
Based on 22 reviews
Total 5 star reviews: 21 Total 4 star reviews: 0 Total 3 star reviews: 0 Total 2 star reviews: 1 Total 1 star reviews: 0
Rating
Ratings
22 reviews
  • TS
    THOMAS S.
    Verified Buyer
    Reviewing
    Siemens QF220 - 20A GFCI Miniature Circuit Breaker
    I do not recommend this product
    Rated 2 out of 5 stars
    3/30/26
    Double check correct version

    I received the Q220”A” version. Superbreaker was easy to work with for a return.

  • KH
    Karmen H.
    Flag of United States
    Reviewing
    Siemens QF120A - 20A GFCI Miniature Circuit Breaker
    I recommend this product
    Rated 5 out of 5 stars
    7/31/23
    Very happy

    I am a small contractor in MN and when I get to the hard to find or not readily available in out are I always turn to SuperBreakers, for great selection and quick shipping.

  • KH
    Karmen H.
    Flag of United States
    Reviewing
    Siemens QF115A - 15A GFCI Miniature Circuit Breaker
    I recommend this product
    Rated 5 out of 5 stars
    7/31/23
    Breaker

    I am a small contractor in MN and when I get to the hard to find or not readily available in out are I always turn to SuperBreakers, for great selection and quick shipping.

  • JH
    Jeff H.
    Flag of United States
    Reviewing
    Siemens QF120AN - 20A GFCI Miniature Circuit Breaker
    I recommend this product
    Rated 5 out of 5 stars
    1/26/23
    all good

    all good

  • DB
    Dean B.
    Flag of United States
    Reviewing
    Siemens QF130 - 30A GFCI Miniature Circuit Breaker
    I recommend this product
    Rated 5 out of 5 stars
    8/25/22
    Master Electrician

    Lets me keep this short and simple.. Order from Super Breakers and you won’t be disappointed!!

    Thank you for your business Super Breakers!