Skip to content
Free Local Pickup ● Ship to Your Hometown Store
Pro & Contractor Accounts ● Apply for Net Terms
100,000+ Products ● Trusted American Hardware Brands
FAQ Shipping & Returns Order Lookup Contact Account
ABB 20 amps Ground Fault Single Pole Circuit Breaker w/Self Test

ABB 20 amps Ground Fault Single Pole Circuit Breaker w/Self Test

Protect people and equipment with the ABB 20A Ground Fault Single Pole Circuit Breaker w/Self Test. This plug-in GFCI breaker delivers reliable ground-fault protection for indoor c…

Abb MPN THQL1120GFTA In Stock & Ready to Ship
Local Price Check i Local stores may price this as low as $71.99. Our online price is $79.99.
$79.99
Includes free shipping on orders over $75 · $8.99 standard below
Delivery in as little as 1–4 business days Order within — for same-day shipping
Shop Local · Support Independent

Every order helps keep your local hardware store on the corner.

Why we built NHG
You might find it for less locally. Independent retailers often offer competitive pricing — some products are even cheaper in-store than online.
Real expert advice — not search results. Independent hardware staff know their inventory and the local conditions you're working in.
Keep the neighborhood working. Every dollar spent at an independent retailer returns roughly 3x more to your local economy than at a national chain.

About Product Overview

Protect people and equipment with the ABB 20A Ground Fault Single Pole Circuit Breaker w/Self Test. This plug-in GFCI breaker delivers reliable ground-fault protection for indoor circuits in residential panels, handling up to 120/240V and 20 amps. The built-in self-test verifies the trip circuit’s integrity automatically, giving you ongoing confidence in protection against shock in moisture-prone areas.

This ABB breaker is designed for quick replacement in compatible load centers, offering a simple, space-conscious solution for adding or upgrading GFCI protection on a dedicated circuit. Packaged in carded presentation for retail display, it arrives ready to install with the breaker itself included.

  • Plug-in mounting for straightforward installation in compatible panels.
  • Single-pole, 20-amp protection for individual branch circuits operating at 120/240V.
  • Ground Fault Interruption with self-test to verify the sensing and trip mechanism periodically without manual intervention.
  • Indoor use only; compact dimensions: 1" wide x 3.3" high x 2.4" deep.
  • Packaging: Carded for retail display and ease of handling.
  • Electrical ratings: 120/240V; UL Listed: No; CSA Listed: No — verify local code requirements for listing status.
  • Breakers Included: Yes.

Use cases and ideal applications

Perfect for upgrading existing panels where GFCI protection is desirable on a dedicated circuit—such as kitchen or bathroom circuits, laundry rooms, or basements—without reconfiguring outlets. It’s a practical retrofit option for electricians and informed homeowners who want circuit-wide protection with a straightforward plug-in approach.

Why this matters

Unlike outlet-level protection, a GFCI circuit breaker safeguards the entire circuit against ground faults, reducing the risk of shock across multiple outlets and devices. The self-test feature adds a layer of reliability, helping to maintain protection over time with minimal maintenance.

Key specifications at a glance

  • Amps: 20
  • Pole: Single
  • Voltage: 120/240
  • Mounting: Plug-In
  • Packaging: Carded
  • Protection Type: Ground Fault
  • Self Test: Yes
  • Dimensions: 1" (W) x 3.3" (H) x 2.4" (D)
  • Indoor use
  • UL Listed: No; CSA Listed: No
  • Breakers included: Yes

The Details Specifications

Brand Abb
SKU 3537255
UPC 783164700114
Unit 0
Case Pack Quantity 1 per case
Retail Unit Quantity 1
Unit of Measure 0 0
Dimensions (L × W × H) 1 × 5 × 7
Weight 1 lbs
Cubic Feet 0.02953 ft³
Country of Origin DOMINICAN REPUBLIC
Safety Data Sheet (SDS) Manufacturer documentation · opens in new tab

Ask our counter. Or theirs.

Most hardware stores can do more than you think. If we can't help you, the folks down the street probably can — just ask at the counter.

What we offer
Free Local Pickup Ship to your hometown store
Pro & Gov Accounts Net terms · tax-exempt
Ships Nationwide From our distribution network
Independent Network Real hardware stores
$0.68 of every dollar spent at a local independent business stays in the community. At a national chain, it's about fifteen cents. Civic Economics, multi-city retail studies
Their Counter
Try local first · we'll wait

The stores we send you to are local and independently run — often for generations, the kind of place where someone behind the counter knows the regulars. We don't own them. We just think they deserve the foot traffic. They can put most of what we sell on their next truck. Ask there before you check out here.

Find a local store →
Mon–Fri 6–5 PST
Independent hardware retailer? Join the network →
About our directory. National Hardware Group is an independent retailer and directory. The local stores we list and link to are separately owned and operated — we have no ownership stake in any of them, and most pay us nothing to be included. That includes plenty of stores flying a co-op banner that people don't realize are locally owned and run, not operated by a corporation. Store owners can choose to upgrade their listing for an enhanced presence or pickup features, but the base directory is free, and inclusion is never a paid endorsement.

Compare products

{"one"=>"Select 2 or 3 items to compare", "other"=>"{{ count }} of 3 items selected"}

Select first item to compare

Select second item to compare

Select third item to compare

Compare