Catalogs > Industrial Controls Catalog > Supplemental Motor Protection > Ground Fault Detection System
Ground Fault Detection System
| Introduction |  |
Standards Compliance and Certifications | |
Product Selection | |
Specifications | |
Typical Wiring Diagrams | |
Approximate Dimensions | |
| Build a Catalog Number |
Your order must include the cat. no. of the arcing ground fault relays and sensor selected.
Low-level (arcing) ground faults are below the fuse or circuit breaker rating and therefore go undetected until a much larger problem develops. The Allen-Bradley Arcing Ground Fault Detection System is designed to sense these low-level faults and either drop out the motor controller or operate a shunt-trip circuit breaker to clear the fault.
Arcing Ground Fault Relays — Class II with High Current Inhibit Feature
| NEMA Starter Size | Maximum Voltage [V AC] |
Maximum Horsepower [Hp] | Full Load Current [A] | High Current Inhibit [A] | Cat. No. | |
| Min. | Max. | |||||
| 1 | 200…230 | 7.5 | 27 | 114 | 144 | 1409-BOAD |
| 460 | 10 | 14 | 63 | 79 | 1409-BOBD | |
| 575 | 10 | 11 | 50 | 62 | 1409-BOCD | |
| 2 | 200…230 | 15 | 45 | 189 | 239 | 1409-COAD |
| 460 | 25 | 34 | 153 | 193 | 1409-COBD | |
| 575 | 25 | 27 | 122 | 153 | 1409-COCD | |
| 3 | 200…230 | 30 | 90 | 360 | 456 | 1409-DOAD |
| 460 | 50 | 65 | 293 | 370 | 1409-DOBD | |
| 575 | 50 | 52 | 234 | 296 | 1409-DOCD | |
| 4 | 200…230 | 50 | 135 | 585 | 741 | 1409-EOAD |
| 460 | 100 | 124 | 558 | 706 | 1409-EOBD | |
| 575 | 100 | 99 | 446 | 564 | 1409-EOCD | |
| 5 | 200…230 | 100 | 270 | 1116 | 1413 | 1409-FOAD |
| 460 | 200 | 240 | 1080 | 1368 | 1409-FOBD | |
| 575 | 200 | 192 | 864 | 1094 | 1409-FOCD | |
| 6 | 200…230 | 200 | 540 | 2160 | 2736 | 1409-GOAD |
| 460 | 400 | 465 | 2147 | 2718 | 1409-GOBD | |
| 575 | 400 | 372 | 1719 | 2177 | 1409-GOCD | |
Arcing Ground Fault Sensors
| NEMA Starter Size | Max. Recommended Cable Size¬ | Window Diameter | Cat. No. |
| 1…2 | 2 AWG @ 600V AC | 1-9/16 in. | 1409-N1 |
| 3…4 | 250 MCM @ 600V AC 4/0 @ 5000V AC 4/0 @ 8000V ACT |
2-1/2 in. | 1409-N2 |
| 5 | 500 MCM @ 600V AC 350 MCM @ 5000V AC 350 MCM @ 8000V ACT |
3-1/4 in. | 1409-N3 |
| 6 | 2-500 MCM @ 600V AC 500 MCM @ 5000V AC 500 MCM @ 8000V ACT |
4-1/4 in. | 1409-N4 |
| ¬ For a 3-phase system with one cable per phase except as indicated. | |||
| T 8000V cable — select sensor to have a window diameter greater than 2.5 times the cable diameter. | |||
Arcing Ground Fault Relays — Class I without High Current Inhibit Feature
| Application | Max. Line Voltage [V] | Cat. No. |
| Shunt-Trip Circuit Breaker | 600 | 1409-MV |
| Medium Voltage Controller | 7200 | |
| Note:Interrupting capacity is determined by starter or circuit breaker selection. | ||