Model GL20
20A Blank Face GFCI Module
20A, 125V blank-face self-test GFCI with back and side wiring and a self-grounding clip.
Model-specific certification documentation review required
- GL20 certification documentation remains under review; request the exact-model listing record.
- Initial self-test within 3 seconds after power-up. Self-test every 15 minutes.
- MCU-controlled self-test program. Coated PCB with MCU protection for critical components.
- No power is delivered to the controlled load when line-load wiring is reversed.
- Legacy temperature-rise conditions: regular operation below 20K; a 20A full-load test below 33K. The test condition does not change the ordered device's current rating.
- High-strength, flame-retardant thermoplastic face and body; UL 94 V-1 flammability rating.
- Integrated current-carrying components: 0.8 mm high-precision phosphor bronze; silver-alloy contacts; 1.2 mm galvanized steel.
- Reinforced terminal screws reduce slipping; terminal screw torque: Over 2 N·m.
- Dual LED indicator lights: Green / red dual LED · stated service life >5 years; soft brightness for night-time use.
- Factory inspection: 100% automated inspection · stated qualified rate 99.99%.
- Trip response: 4–6 mA · <25 ms.
- Legacy patent statement: China & USA.
- Warranty: 3 years.
- Blank-face GFCI configuration
GL20 documentation remains under review. Request the exact model listing record before specifying it.
Browse product resources Request model-specific documentsTechnical Parameters
| Model | GL20 |
|---|---|
| Available finishes | White / Ivory / Light Almond / Black / Grey / Brown |
| 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) |
| NEMA configuration | Blank Face (Dead Face) |
| 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) |
| Certification | Documentation review required |
| Standard | UL 943 / UL 498 / UL 1998 |
| Application grade | Residential & Commercial Grade |
| Tamper-resistant | No |
| Weather-resistant | No |
| Usage | Indoor only |
| 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 |
| 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 |
| Trip response | 4–6 mA · <25 ms |
| Warranty | 3 years |







