Model GT20

20A Tamper-Resistant GFCI

Name: GT20 20A Tamper-Resistant GFCI
Brand: FAHINT
SKU: GT20

20A, 125V tamper-resistant self-test GFCI receptacle with 20A feed-through, back and side wiring, and a self-grounding clip.

Available finishes

Key specifications

Rating: 20A, 125V
Configuration: NEMA 5-20R
Variant: TR
Application: Residential & Commercial Grade

UL / cUL listed · file E504391

Request a quote Technical details

Model data

Technical specifications.

Key values first, with the complete specification grouped below for faster review.

Rating: 20A, 125V
Configuration: NEMA 5-20R
Trip level: 4–6 mA · <25 ms
Wiring: Side wire & back wire
Certification: UL/cUL listed · file E504391

Complete model specification

Electrical performance

5 details

Amperage: 20A
Rated voltage: 125V AC
Working voltage: 102–132V AC
Trip level: 4–6 mA · <25 ms
Operating temperature: -35°C to 66°C (-30°F to 150°F)

Installation & configuration

7 details

NEMA configuration: NEMA 5-20R
Wiring method: Side wire & back wire
Wire gauge: #12–#14 AWG copper wire
Pole & wire: 2-pole, 3-wire
Grounding: Self-grounding
Face dimensions: 4.53 in (115 mm) × 2.75 in (70 mm)
Body depth: 1.56 in (39.7 mm)

Compliance & application

7 details

Item code: GT20
Certification: UL/cUL listed · file E504391
Standard: UL 943 / UL 498 / UL 1998
Application grade: Residential & Commercial Grade
Tamper-resistant: Yes
Weather-resistant: No
Usage: Indoor only

Materials & construction

6 details

Face & body: Thermoplastic
Current-carrying components: 0.8 mm high-precision phosphor bronze
Mounting yoke: 1.2 mm galvanized steel
Contacts: Silver-alloy contacts
Circuit protection: Coated PCB with MCU protection for critical components
Flammability: UL 94 V-1

Quality & durability

8 details

Initial self-test: Within 3 seconds after power-up
Full-load temperature rise: Below 20K / 33K
Terminal screw torque: Over 2 N·m
Indicator system: Green / red dual LED · stated service life >5 years
Factory inspection: 100% automated inspection · stated qualified rate 99.99%
Trip response: 4–6 mA · <25 ms
Patent protection: China & USA
Warranty: 3 years

Product engineering

Protection,clearly documented.

20A, 125V tamper-resistant self-test GFCI receptacle with 20A feed-through, back and side wiring, and a self-grounding clip.

Product features

04 documented details

Tamper-resistant
20A T-slot face
Self-test every 15 min
No power to the receptacle face or downstream receptacle if line-load is reversed

Application review

Designed for the environments in the specification.

Residential & Commercial Grade

20A, 125V tamper-resistant self-test GFCI receptacle with 20A feed-through, back and side wiring, and a self-grounding clip.

Confirm the intended location, enclosure and applicable code requirements before specifying a model.

Review your application

Program configuration

Configure the product around your program.

Align the visible finish and approved program materials around a reviewed product specification.

Retail packaging references

7 standard presentations

GT20 White standard retail packaging — White

GT20 Black standard retail packaging — Black

GT20 Grey standard retail packaging — Grey

GT20 Graphite standard retail packaging — Graphite

GT20 Ivory standard retail packaging — Ivory

GT20 Light Almond standard retail packaging — Light Almond

GT20 Brown standard retail packaging — Brown

Wall plate options

Coordinate the plate style with the selected finish.

GT20 with standard screw wall plate and retail box — **Standard screw plate**Visible fastening · classic presentation

GT20 with screwless wall plate and retail box — **Screwless plate**Clean face · concealed fastening

Packaging programs

3 approved configurations

Program	Retail presentation	Wall plate	Inner box	Carton
Package A	Color retail box	Included	10 pcs	50 pcs
Package B	Blank white box	Included	10 pcs	50 pcs
Package C	Color retail box	Not included	10 pcs	100 pcs

Installation reference

Wiring and dimensions.

A clear field reference for terminal identification, installation sequence and the three dimensions that matter before specification.

Connection guide

Wire by terminal, not by position.

GT20 rear terminal view — Rear terminal view · confirm molded LINE and LOAD markings on the device.

Neutral White conductor: Silver screw
Hot Black conductor: Brass screw
Ground Copper or green conductor: Green screw

Use the device’s LINE and LOAD markings to identify the corresponding terminals before inserting any conductor.

01IdentifyConfirm supply, load and ground conductors.
02SecureInsert wires through the terminal holes and tighten clockwise.
03VerifyPress RESET and confirm the green LED indicator turns on.

Dimensional profile

Three views. Three critical dimensions.

Overall height: 4.53 in (115 mm)
Plate width: 2.75 in (70 mm)
Body depth: 1.56 in (39.7 mm)

Reference dimensions only. Verify enclosure depth and applicable installation requirements before release.

Cover of the supplied E504391-20210212 certificate — Certificate of Compliance · UL-US-2016865-1 · issued to Wenzhou Fahint Electric Co Ltd

Model verification

Certification your team can verify.

Review the listing identifiers here, then open the original certificate when your technical or sourcing team needs the complete document.

Model named in supplied addendum

Certificate number: UL-US-2016865-1
UL file: E504391
Report reference: E504391-20210212
Document issued: August 16, 2022
Standard: UL 943 · 5th Edition

Document scopeKCXS · Ground-fault circuit interrupters

GT20 is named in the supplied August 16, 2022 addendum (report E504391-20210212). Confirm current coverage for the ordered configuration.

Model addenda: PDF pages 2, 4. This supplied document is not a live certification-status check.

Open full certificate Review quality capabilities Browse product resources

Manufacturing evidence.

Factory photographs from FAHINT. Test requirements and documentation are confirmed for the selected model.

FAHINT staff working at wiring-device assembly benches — Component assembly

FAHINT staff operating GFCI functional testing stations — GFCI functional testing

FAHINT laboratory with test benches and a temperature and humidity chamber — Laboratory verification

Project inquiry

Request a quotation for GT20.

Share the intended application, target finish and documentation needs so the team can review the product brief.

Use the full contact page

Before you order GT20

Configuration. Confirm the face rating, TR / WR or blank-face configuration, and required model documents.
Order breakdown. List quantities by finish, wallplate and packaging option, with the destination and requested timing.
Documentation. GT20 is named in the supplied August 16, 2022 addendum (report E504391-20210212). Confirm current coverage for the ordered configuration.

View original certificate PDF Read the GFCI sourcing checklist

Sample arrangements, minimum quantities and lead times are confirmed in your quotation. Approve the sample and any authorized artwork before the order.

20A Tamper-Resistant GFCI

Technical specifications.

Electrical performance

Installation & configuration

Compliance & application

Materials & construction

Quality & durability

Protection,clearly documented.

Designed for the environments in the specification.

Configure the product around your program.

Packaging & program options.

Wall plate options

Packaging programs

Wiring and dimensions.

Wire by terminal, not by position.

Three views. Three critical dimensions.

Certification your team can verify.

Manufacturing evidence.

Request a quotation for GT20.

Before you order GT20

Send a product brief.

20A Tamper-Resistant GFCI

Technical specifications.

Designed for the environments in the specification.

Configure the product around your program.

Wiring and dimensions.

Certification your team can verify.

Manufacturing evidence.

Other verified GFCI models.

15A Self-Test GFCI Receptacle

20A Self-Test GFCI Receptacle

15A Tamper-Resistant GFCI

15A Weather-Resistant GFCI (TR + WR)

Request a quotation for GT20.

Before you order GT20

Send a product brief.