---
product_id: 500924677
title: "Siemens Q120DFN 20 Amp 1-Pole Dual Function (CAFCI/GFCI) Plug-On Neutral Circuit Breaker, Black"
brand: "siemens"
price: "A$177"
currency: AUD
in_stock: true
reviews_count: 5
category: "Siemens"
url: https://www.desertcart.com.au/products/500924677-siemens-q120dfn-20-amp-1-pole-dual-function-cafci-gfci
store_origin: AU
region: Australia
---

# 20 Amp 1-Pole power capacity Plug-On Neutral for easy install Dual Function AFCI/GFCI protection Siemens Q120DFN 20 Amp 1-Pole Dual Function (CAFCI/GFCI) Plug-On Neutral Circuit Breaker, Black

**Brand:** siemens
**Price:** A$177
**Availability:** ✅ In Stock

## Summary

> 🛠️ Power up your safety game with Siemens’ smartest breaker yet!

## Quick Answers

- **What is this?** Siemens Q120DFN 20 Amp 1-Pole Dual Function (CAFCI/GFCI) Plug-On Neutral Circuit Breaker, Black by siemens
- **How much does it cost?** A$177 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.au](https://www.desertcart.com.au/products/500924677-siemens-q120dfn-20-amp-1-pole-dual-function-cafci-gfci)

## Best For

- siemens enthusiasts

## Why This Product

- Trusted siemens brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Compact Yet Spacious Design:** Fits snugly in Plug-On Neutral load centers while simplifying wiring with a single load lug.
- • **Dual-Function Safety Shield:** Combines 5mA GFCI and combination AFCI to guard against arc and ground faults simultaneously.
- • **UL Listed & 10,000 AIC Rated:** Industry-trusted reliability and high fault current interruption capacity for peace of mind.
- • **First-in-Class Self-Test Feature:** Automatically verifies protection status, ensuring your home’s safety is always on point.
- • **Effortless Plug-On Neutral Installation:** No pigtail hassle—snap it in and go, saving you time and complexity.

## Overview

The Siemens Q120DFN is a 20 Amp, 1-Pole dual-function circuit breaker combining AFCI and GFCI protection in a sleek plug-on neutral design. It installs easily without a pigtail, features a self-test function for continuous safety assurance, and is UL listed with a 10,000 AIC rating, making it a top-tier choice for modern, secure electrical panels.

## Description

Siemens introduces the new simple, spacious and secure Plug-on neutral load centers with electronic breakers. The dual-function circuit breaker combines class A 5mA GFCI and combination type AFCI, protecting against both arc faults and ground faults. This, along with the new self-test feature, makes it the first in class in electrical safety for homeowners. This Dual Function circuit breaker is the same, reliable design, without the pigtail, specifically designed for the Plug-On Neutral Load Centers. Simple, Spacious, Secure. The Siemens Plug-On Neutral Combination Type AFCI breaker detects arcing faults (an unintentional arcing condition in a circuit) that standard circuit breakers are unable to detect. This AFCI circuit breaker is the same, reliable design, without the pigtail, specifically design for the Plug-On Neutral Load Centers. These breakers now only have a single load lug. The branch neutral conductor is returned to the neutral terminal bar for simpler and quicker wiring.

Review: These are easy to install if you have a compatible plug on neutral box. Fits tight. Works perfect. No more searching the wall for the GFCI and looking for the breaker at the same time, it’s always all in once place in the box. Used 4 of these in my garage for 3 years so far and going strong. GFCI tester proves good functionality.
Review: Just as described, fsst shipping and excellent price

## Features

- Simply installs like any other breaker, now without the pigtail
- 10,000 AIC
- HACR and SWD rated
- UL Listed

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B08Y5D8N71 |
| Batteries Required? | No |
| Batteries included? | No |
| Colour | Black |
| Customer Reviews | 4.6 4.6 out of 5 stars (295) |
| Date First Available | 21 Dec. 2022 |
| Included Components | Circuit Breaker, Instruction Sheet |
| Item Package Quantity | 1 |
| Item Weight | 113 g |
| Item model number | Q120DFN |
| Manufacturer | Siemens |
| Number of Pieces | 1 |
| Part Number | Q120DFN |
| Plug profile | Plug-In Mount |
| Product Dimensions | 7.62 x 2.54 x 8.89 cm; 113.4 g |
| Voltage | 240 Volts |

## Product Details

- **Brand:** SIEMENS
- **Circuit breaker type:** AFCI
- **Current rating:** 20 Amps
- **Mounting type:** Plug-In Mount
- **Product dimensions:** 76D x 25W x 89H millimetres

## Images

![Siemens Q120DFN 20 Amp 1-Pole Dual Function (CAFCI/GFCI) Plug-On Neutral Circuit Breaker, Black - Image 1](https://m.media-amazon.com/images/I/71cs-17Ti1L.jpg)
![Siemens Q120DFN 20 Amp 1-Pole Dual Function (CAFCI/GFCI) Plug-On Neutral Circuit Breaker, Black - Image 2](https://m.media-amazon.com/images/I/71uc5U5LZtL.jpg)
![Siemens Q120DFN 20 Amp 1-Pole Dual Function (CAFCI/GFCI) Plug-On Neutral Circuit Breaker, Black - Image 3](https://m.media-amazon.com/images/I/71v5aLI9kHL.jpg)
![Siemens Q120DFN 20 Amp 1-Pole Dual Function (CAFCI/GFCI) Plug-On Neutral Circuit Breaker, Black - Image 4](https://m.media-amazon.com/images/I/71u6NKQS8ML.jpg)

## Questions & Answers

**Q: Is the description accurate, indicating 240 volts? The picture of the breaker shows 120.**
A: No the breaker is single pole 120v

**Q: Is this compatible with a GE panel?**
A: No. Siemens has not listed these for use in GE equipment.  You would need to contact GE to determine if they have approved this Siemens breaker for use in their specific panel.

**Q: I need 8 Q115dfn and 11q120dfn breakers.  Do you offer any bulk pricing?**
A: Thank you for contacting Siemens we do not have bulk pricing options for these breakers.

**Q: Has the nuisance tripping issue been resolved?**
A: I don’t know about that, but I’ve been selling this breaker for two years, and I never had any problems with the tripping

## Customer Reviews

### ⭐⭐⭐⭐⭐ Review
*by J***R on 28 December 2025*

These are easy to install if you have a compatible plug on neutral box. Fits tight. Works perfect. No more searching the wall for the GFCI and looking for the breaker at the same time, it’s always all in once place in the box. Used 4 of these in my garage for 3 years so far and going strong. GFCI tester proves good functionality.

### ⭐⭐⭐⭐⭐ Review
*by J***E on 22 September 2025*

Just as described, fsst shipping and excellent price

### ⭐⭐⭐⭐⭐ Review
*by N***U on 23 January 2026*

My old breaker was trippin’. This one is way more chill.

## Frequently Bought Together

- 20 Amp 1-Pole Dual Function (CAFCI/GFCI) Plug-On Neutral Circuit Breaker
- 15 Amp 1-Pole Combination Type AFCI Plug-On Neutral Circuit Breaker
- Siemens Q115DFN 15 Amp 1-Pole Dual Function (CAFCI/GFCI) Plug-On Neutral Circuit Breaker, Black

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*Product available on Desertcart Australia*
*Store origin: AU*
*Last updated: 2026-02-15*