2
Series NRX Low Voltage Power (Air)
Circuit Breakers User Manual
EATON CORPORATION
www.eaton.com
Instructional Book
MN01301003E
Effective July 2011
Contents
Description Page
Contents 2
List of figures
2
List of tables
3
Section 1: Introduction
4
Section 2: Receiving, unpacking, and inspection
13
Section 3: Breaker General Operation
16
Section 4: Circuit Breaker Features and Accessories
21
Section 5: Dimensional Drawings for Installation of Drawout Circuit Breaker and Cassette
28
Section 6: Inspection and Maintenance
44
Section 7: Troubleshooting
47
List of figures
Figure 1. Series NRX Nameplate Location
5
Figure 2. Series NRX Catalog Numbering System
6
Figure2a. Series NRX Type RF-Frame Cassette Catalog Numbering System
8
Figure 3. Typical NRX Drawout Circuit Breaker
9
Figure 4. Typical NRX Drawout Cassette
10
Figure 5. Typical NRX Fixed Circuit Breaker
11
Figure 6. Typical NRX Drawout Circuit Breaker Front Cover
12
Figure 7. Step 1
13
Figure 8. Step 3
13
Figure 9. Step 3
15
Figure 10. Step 1
16
Figure 11. Step 2
16
Figure 12. Step 3
16
Figure 13. Step 4
17
Figure 14. WITHDRAWN Position
17
Figure 15. DISCONNECT Position
17
Figure 16. TEST Position
18
Figure 17. CONNECT Position
18
Figure 18. Step 2
18
Figure 18a. Step 2
18
Figure 19. Step 3
19
Figure 20. Step 4
19
Figure 21. Step 1
19
Figure 22. Step 2
20
Figure 23. Step 3
20
Figure 24. Step 3
20
