Eaton Magnum PXR User Manual

4
User Manual MN013016EN
Effective July 2022
Magnum PXR and Power Defense SB low
voltage power circuit breakers user manual
EATON www.eaton.com
Figure 57. AMP secondary wiring removal tool ........................................................................................33
Figure 58. Magnum PXR and PD-SB 3-pole wiring diagram (PXR20/25) ....................................................................34
Figure 59. Magnum PXR and PD-SB 4-pole wiring diagram (PXR20/25) ....................................................................35
Figure 60. Magnum PXR and PD-SB 6-pole ABCABC wiring diagram (PXR20/25) ............................................................36
Figure 61. Magnum PXR and PD-SB 8-pole NABCNABC wiring diagram (PXR20/25) ..........................................................37
Figure 62. PXR and PD-SB 6/8 pole wiring diagram (PXR20/25) for alternate phasing configurations ..............................................38
Figure 63. Magnum PXR and PD-SB accessory wiring diagrams (PXR 20/25) ................................................................39
Figure 64. MPS/SPS drawout circuit breaker in cassette ................................................................................40
Figure 65. MPS/SPS drawout circuit breaker with automatic primary disconnects ............................................................40
Figure 66. Typical drawout cassette features .........................................................................................41
Figure 67. Typical narrow frame cassette (horizontal terminals) ...........................................................................42
Figure 68. Typical basic cassette (vertical terminals) ....................................................................................42
Figure 69. Typical basic cassette (without stabs) ......................................................................................42
Figure 70. Typical universal cassette, four-pole (flat terminal pads) .........................................................................42
Figure 71. Fixed narrow frame circuit breaker with available vertical adapter shown ...........................................................43
Figure 72. CLOSED and OPEN indicators ............................................................................................44
Figure 73. Accessory viewing windows .............................................................................................45
Figure 74. Power Xpert Protection Manager (PXPM) software. ...........................................................................45
Figure 75. Top rear view of circuit breaker with one arc chute removed ....................................................................47
Figure 76. Bottom view of arc chute ................................................................................................47
Figure 77. Primary contacts with circuit breaker open (not used for contact wear inspection) ...................................................48
Figure 78. Contact inspection area with circuit breaker open .............................................................................48
Figure 79. Use of contact wear indicator with circuit breaker closed .......................................................................49
Figure 80. Magnum PXR breaker mechanism lubrication ................................................................................50
Figure 81. Magnum PXR pole shaft lubrication ........................................................................................50
Figure 82. Magnum PXR drawout system lubrication (not applicable to fixed-mount breakers) ..................................................50
Figure 83. Magnum PXR drawout system lubrication ...................................................................................50
Figure 84. Magnum PXR charging handle and gear lubrication ...........................................................................50
Figure 85. Magnum PXR pole shaft and TA spring lubrication ............................................................................50
Figure 86. Primary disconnects ....................................................................................................51
Figure 87. Breaker secondary .....................................................................................................51
Figure 88. Cassette secondary ....................................................................................................51
Figure 89. Charged and opened ...................................................................................................52
Figure 90. Push to close .........................................................................................................52
Figure 91. Levering-in door in position between disconnect and test .......................................................................53
List of gures, continued
Description Page

Eaton Magnum PXR Specifications

General

Brand	Eaton
Model	Magnum PXR
Category	Circuit breakers
Language	English