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3
Instructional Book
MN01301003E
Effective July 2011
Series NRX Low Voltage Power (Air)
Circuit Breakers User Manual
EATON CORPORATION
www.eaton.com
List of figures (continued)
Description Page
Figure 25. Installed Digitrip 520 Trip Unit
21
Figure 26. Secondary Point Identifications
22
Figure 27. Secondary Terminal Blocks
23
Figure 28. Weidmuller Plug and Crimp Contact
24
Figure 29. Extraction Tool in Use
24
Figure 30. Left Accessory Tray
24
Figure 31. Right Accessory Tray
24
Figure 32. 3-Pole Drawout Cassette – Rear/Bottom Views
28
Figure 33. 3-Pole Drawout Cassette – CONNECTED/TEST Positions
29
Figure 34. 3-Pole Drawout Cassette – DISCONNECT/WITHDRAWN
30
Figure 35. 3-Pole Drawout Cassette – Top/Side Views with 800-3200A Horizontal Bus Adapters
31
Figure 36. 3-Pole Drawout Cassette – Top/Side Views with 800-3200A Vertical Bus Adapters
32
Figure 37. 3-Pole Drawout Cassette – Top/Side Views with 4000A Horizontal Bus Adapters
33
Figure 38. 3-Pole Drawout Cassette – Top/Side Views with 4000A Vertical Bus Adapters
34
Figure 39. 3-Pole Drawout Cassette – Front View Door Cutout Details
35
Figure 40. 4-Pole Drawout Cassette – Rear/Bottom Views
36
Figure 41. 4-Pole Drawout Cassette – CONNECTED/TEST Positions
37
Figure 42. 4-Pole Drawout Cassette – DISCONNECT/WITHDRAWN
38
Figure 43. 4-Pole Drawout Cassette – Top/Side Views with 800-3200A Horizontal Bus Adapters
39
Figure 44. 4-Pole Drawout Cassette – Top/Side Views with 800-3200A Vertical Bus Adapters
40
Figure 45. 4-Pole Drawout Cassette – Top/Side Views with 4000A Horizontal Bus Adapters
41
Figure 46. 4-Pole Drawout Cassette – Top/Side Views with 4000A Vertical Bus Adapters
42
Figure 47. 4-Pole Drawout Cassette – Front View Door Cutout Details
43
Figure 48. Typical Nameplate Information
45
Figure 49. Step 1
46
Figure 50. Step 2
46
Figure 51. Step 4
46
List of tables
Description Page
Table 1. Transport Indicator
13
Table 2. Suggested Lifting Procedures and Precautions
14
Table 3. Approximate Weights
15
Table 4. Series NRX Digitrip Trip Units
21
Table 5. Customer Wiring Details
23
Table 6. Inspection Frequency
44
Table 7. Circuit Breaker Troubleshooting Guide
47