Designed & Assembled in the USA
- Combine 5 mA ground fault sensor with a shunt trip breaker for use in ordinary locations in accordance with the National Electrical Code NFPA 70.
- This solution guide is for most common single-phase 120 VAC & 3-phase 240 VAC applications. NK Technologies offers a full line of ground fault sensors.
- Contact NK Technologies for other use cases. sales@nktechnologies.com
Choose a GF Sensor in 4 Easy Steps
1. GFCI Protection Level | 2. UL Standard | 3. Choose Aperture Diameter Based on Wire Bundle Diameter | 4. Pair with Shunt Trip Circuit Breaker | ||||||||
Listed* UL 508 | Recognized** UL 1053 | Aperture | Single Phase | 3-Phase | Use 120 or 240 or 480 VAC circuit breaker with 120 VAC rated shunt trip solenoid | ||||||
< 50A | 60A | > 60A | |||||||||
5 mA |  | 1.76" | 4-wire Wye | YES | Factory calibrated for 5 mA trip point. | ||||||
0.75" | YES | YES | 3-wire Delta | ||||||||
10 mA & 30 mA |  | 0.75" | YES | YES | AG3 provides field adjustable detection settings. 5 mA, 10 mA, or 30mA | ||||||
All models UL tested | Monitored wire bundle must pass through relay aperture. AGL offers larger diameter than AGU/AG3 for 3-phase >60A | ||||||||||
**Recognized under UL 1053 as a ground fault relay