Table of Contents
Subscribe to Our Youtube Channel
Related Manuals for Eaton Magnum PXR
Summary of Contents for Eaton Magnum PXR
- Page 1 Effective July 2022 User Manual MN013016EN Supersedes January 2022 Magnum PXR and Power Defense SB low voltage power circuit breakers user manual For use in ANSI/UL applications Narrow frame Double narrow frame Standard frame Double-wide frame...
-
Page 2: Table Of Contents
Table 1 . Magnum PXR ratings at 240, 480, 600 V . . . . . . . . . . . . . . . - Page 3 User Manual MN013016EN Magnum PXR and Power Defense SB low voltage power circuit breakers user manual Effective July 2022 List of figures Description Page Figure 1 . Family of Magnum PXR low voltage power circuit breakers (800–6000 A) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6 Figure 2 .
- Page 4 User Manual MN013016EN Magnum PXR and Power Defense SB low voltage power circuit breakers user manual Effective July 2022 List of figures, continued Description Page Figure 57 . AMP secondary wiring removal tool . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .33 Figure 58 .
-
Page 5: Purpose
(if drawout) its mating cassette . In the case of fixed versions 635 Vac . Magnum PXR (MPS and MPN) and PD-SB (SPS and of Magnum PXR and PD-SB circuit breakers, certain sections of... -
Page 6: Safety Features
Narrow frame Double narrow frame Standard frame Double-wide frame Figure 1. Family of Magnum PXR low voltage power circuit breakers (800–6000 A) m WARNING Safety features MAGNUM AND POWER DEFENSE CIRCUIT BREAKERS ARE ROBUST AND Magnum PXR and PD-SB circuit breakers and associated drawout ARE PROVIDED WITH SAFETY FEATURES. -
Page 7: Table 1 . Magnum Pxr Ratings At 240, 480, 600 V
User Manual MN013016EN Magnum PXR and Power Defense SB low voltage power circuit breakers user manual Effective July 2022 Table 1. Magnum PXR ratings at 240, 480, 600 V Table 2. Power Defense SB ratings at 240, 480, and 600V Maximum Breaker... -
Page 8: Qualified Personnel
. When ready to inspect and install a Magnum PXR or PD-SB circuit breaker, carefully remove the banding straps and lift off the cardboard box . Remove any additional packing material and internally packed documentation . -
Page 9: Lifting Circuit Breaker
User Manual MN013016EN Magnum PXR and Power Defense SB low voltage power circuit breakers user manual Effective July 2022 On drawout circuit breakers shipped without a cassette, two shipping Storing the circuit breaker clamps hook into the breaker side plates and are held to the pallet If it is necessary to store a circuit breaker before installation, do with four lag screws (Figure 4) . -
Page 10: Circuit Breaker Inspection
User Manual MN013016EN Magnum PXR and Power Defense SB low voltage power circuit breakers user manual Effective July 2022 Table 3. Basic circuit breaker weights Table 33. Basic circuit breaker weights (continued) (lifting and support reference only) Weight (lb) Weight (lb) -
Page 11: Installing The Drawout Circuit Breaker
Rejection interlocks In structures equipped for drawout circuit breakers, a bolted-in Within any one physical frame size, Magnum PXR and PD-SB type cassette with movable extension rails supports the circuit breaker drawout circuit breakers come in a variety of continuous current (Figure 5 and Figure 6) . -
Page 12: Figure 8. Remove Position
Circuit breaker positioning The REMOVE position is a position outside the compartment on the cassette’s drawout rails where the circuit breaker is not Magnum PXR and PD-SB drawout circuit breakers have four engaged with the levering mechanism . The DISCONNECT, normal positions:... -
Page 13: Figure 10. Test Position
User Manual MN013016EN Magnum PXR and Power Defense SB low voltage power circuit breakers user manual Effective July 2022 Secondary connection made Rear of compartment Compartment front door Circuit Primary breaker connections side view not made Breaker and trip unit testing •... -
Page 14: Levering Circuit Breaker
Fixed circuit breaker device is hand operated using a standard 3/8-inch square drive and The Magnum PXR and PD-SB fixed type circuit breaker differs ratchet, which is not provided (Figure 13) . As long as the access from the drawout version in that it has no levering device, primary door is raised, the circuit breaker is held trip-free . -
Page 15: Circuit Breaker Operation
Section 3: Circuit breaker description and operation Introduction Magnum PXR and PD-SB circuit breakers are available in both drawout and fixed mounting configurations (Figure 15 and Figure 16) . A majority of features are common to all configurations, and will be discussed in this section . The mounting features unique to the drawout and fixed configurations will be covered individually in Sections 5 and 6 respectively . -
Page 16: Figure 15 . Typical Pxr Drawout Circuit Breaker Features (Front And Rear Views)
User Manual MN013016EN Magnum PXR and Power Defense SB low voltage power circuit breakers user manual Effective July 2022 Baffled arc chute cover Arc chamber Secondary disconnects (contacts) Primary vertical adapter Front cover Levering device bearing plate Drawout rail supports... -
Page 17: Figure 17 . Typical Double-Wide Standard Frame Circuit Breaker Features (Front And Rear View)
User Manual MN013016EN Magnum PXR and Power Defense SB low voltage power circuit breakers user manual Effective July 2022 Baffled arc chute cover Horizontal primary disconnects Arc chamber Secondary disconnect Circuit breaker nameplate Front cover Phase identification labels Integral lifting handle Figure 17. -
Page 18: Figure 18 . Magnum Pxr And Pd-Sb Drawout Circuit Breaker
Battery cover and In rating label Optional operation counter (not shown) Contact status (open-close) Padlockable levering device access door for drawout breaker Spring status (charged-discharged) Figure 18. Magnum PXR and PD-SB drawout circuit breaker front cover (Magnum PXR shown) EATON www.eaton.com... -
Page 19: Basic Circuit Breaker Assembly
Effective July 2022 Basic circuit breaker assembly Pole units All Magnum PXR and PD-SB circuit breakers use a rigid frame A current-carrying pole unit is individually enclosed and rigidly housing construction of engineered thermoset composite resins . supported by the case . The individual chambers provide for pole This construction unit isolation and insulation from one another . -
Page 20: Figure 21. Narrow Frame (8-Finger) Moving Conductor Assembly
User Manual MN013016EN Magnum PXR and Power Defense SB low voltage power circuit breakers user manual Effective July 2022 Primary stationary contacts “Toe” The primary stationary contact is a combination of two items (arcing contact) (Figure 23) . One is a conductive pad mounted on the line conductor that functions as the stationary main contact . -
Page 21: Operating Mechanism
Effective July 2022 Operating mechanism The Magnum PXR and PD-SB operating mechanism is based on the proven cam and spring design of the Magnum DS power circuit breaker . It is easily accessed by removing four cover screws and the front cover (Figure 24) . -
Page 22: Arc Chambers
Effective July 2022 Arc chute The Magnum PXR and PD-SB arc chutes mount down over the arcing contact . V-shaped arc chute plates attract the arc and interrupts it . The top arc plate, which is a part of the arc chute itself, also helps to attract the arc away from the moving arcing contact and up into the arc chute’s V-shaped plates (Figure 29 and Figure 30) . -
Page 23: Electronic Tripping System
Effective July 2022 Electronic tripping system The Magnum PXR and PD-SB circuit breaker uses the Power Xpert Release (PXR) trip unit . The trip unit is available in multiple styles with advanced features . For details pertaining to the trip units available and how to configure them for your application, please refer to the User Manual, publication MN013015EN . -
Page 24: Table 4. Magnum Pxr And Pd-Sb Trip Units
User Manual MN013016EN Magnum PXR and Power Defense SB low voltage power circuit breakers user manual Effective July 2022 Table 4. Magnum PXR and PD-SB trip units Trip unit Breaker catalog Trip unit catalog number digit 13,14 Protection ARMS Communication... -
Page 25: Figure 32. Narrow Frame Current Sensors Shown With Cover Plate Removed
. Making current release All Magnum PXR and PD-SB circuit breaker trip units have a making current release function . This safety feature prevents the circuit breaker from being closed and latched on a faulted circuit . The non-adjustable release is preset at a peak instantaneous current of 22 .5 x I... -
Page 26: Accessory Devices
. 220–250 Vdc 154–275 450 W / 10 W Magnum PXR and PD-SB circuit breaker accessories are designed to fit all frame sizes . The accessories fall into one of three categories: 110–127 Vac 77–140 450 VA / 10 VA 208–240 Vac... -
Page 27: Table 8. Undervoltage Release
User Manual MN013016EN Magnum PXR and Power Defense SB low voltage power circuit breakers user manual Effective July 2022 Figure 37. Spring release with optional latch switch Figure 38. Undervoltage release An optional Latch Check Switch (LCS) can be installed to indicate when the circuit breaker is “ready to close . -
Page 28: Table 10 . Compact Motor Operator
User Manual MN013016EN Magnum PXR and Power Defense SB low voltage power circuit breakers user manual Effective July 2022 Motor operator—A motor operator is an electric motor assembly internally mounted in the circuit breaker (Figure 42 and Figure 43) . -
Page 29: Figure 43. Motor Operator Installed In A Standard Frame Circuit Breaker
Up to three lock cylinders can be installed on one cassette . Cassette safety shutters • Eaton supplies the lock provisions only . The customer is Cassette cell switch • responsible for the locks, which can be Kirk or Castell . -
Page 30: Figure 46 . Open-Close Pushbutton Lockable Cover Plate (Magnum Ds Shown)
User Manual MN013016EN Magnum PXR and Power Defense SB low voltage power circuit breakers user manual Effective July 2022 Pushbutton cover—Padlockable covers are available to limit access to the OPEN and CLOSE pushbuttons (Figure 46) . They can be installed with either or both pushbutton covers in place . -
Page 31: Figure 51. Door Escutcheon And Gasket
Mechanical interlock—A family of mechanical interlocks are available bracket is attached to either side of the cassette or elsewhere within to interlock the closing of two or three Magnum PXR or PD-SB circuit switchgear and provides attachment points for up to three additional breakers . -
Page 32: Section 4: Master Connection Diagrams
Section 4: Master connection diagrams Secondary contacts and connection diagrams A maximum of 84 secondary wiring connection points are available on the Magnum PXR and PD-SB circuit breaker, each dedicated to a specific function (Figure 55) . Protective hood Labels Legend Overcurrent trip switch Figure 54. -
Page 33: Figure 56. Typical Cassette-Mounted Secondary Wiring
Closed hinged Terminal blocks (AMP) to facilitate the removal of secondary wiring from a plug-in covers with connector, or contact Eaton for assistance (Figure 57) . The connector testing holes halves must be separated to use this tool . Plug-in connectors Figure 57. -
Page 34: Figure 58 . Magnum Pxr And Pd-Sb 3-Pole Wiring Diagram (Pxr20/25)
User Manual MN013016EN Magnum PXR and Power Defense SB low voltage power circuit breakers user manual Effective July 2022 Figure 58. Magnum PXR and PD-SB 3-pole wiring diagram (PXR 20/25) EATON www.eaton.com... -
Page 35: Figure 59 . Magnum Pxr And Pd-Sb 4-Pole Wiring Diagram (Pxr20/25)
User Manual MN013016EN Magnum PXR and Power Defense SB low voltage power circuit breakers user manual Effective July 2022 Figure 59. Magnum PXR and PD-SB 4-pole wiring diagram (PXR 20/25) EATON www.eaton.com... -
Page 36: Figure 60 . Magnum Pxr And Pd-Sb 6-Pole Abcabc Wiring Diagram (Pxr20/25)
User Manual MN013016EN Magnum PXR and Power Defense SB low voltage power circuit breakers user manual Effective July 2022 Figure 60. Magnum PXR and PD-SB 6-pole ABCABC wiring diagram (PXR 20/25) EATON www.eaton.com... -
Page 37: Figure 61 . Magnum Pxr And Pd-Sb 8-Pole Nabcnabc Wiring Diagram (Pxr20/25)
User Manual MN013016EN Magnum PXR and Power Defense SB low voltage power circuit breakers user manual Effective July 2022 Figure 61. Magnum PXR and PD-SB 8-pole NABCNABC wiring diagram (PXR 20/25) EATON www.eaton.com... -
Page 38: Figure 62 . Pxr And Pd-Sb 6/8 Pole Wiring Diagram (Pxr20/25) For Alternate Phasing Configurations
User Manual MN013016EN Magnum PXR and Power Defense SB low voltage power circuit breakers user manual Effective July 2022 Figure 62. Magnum PXR and PD-SB 6/8 pole wiring diagram (PXR 20/25) for alternate phasing configurations EATON www.eaton.com... -
Page 39: Figure 63. Magnum Pxr And Pd-Sb Accessory Wiring Diagrams (Pxr 20/25)
User Manual MN013016EN Magnum PXR and Power Defense SB low voltage power circuit breakers user manual Effective July 2022 SECONDARY TERMINALS Figure 63. Magnum PXR and PD-SB accessory wiring diagrams (PXR 20/25) EATON www.eaton.com... -
Page 40: Section 5: Drawout Circuit Breaker And Cassette
(PA013006EN), available on the website at www .eaton .com/magnumpxr The installation and the levering of a drawout circuit breaker were discussed in Section 2 . If necessary, review that information, because it will not be repeated here . -
Page 41: Figure 66. Typical Drawout Cassette Features
User Manual MN013016EN Magnum PXR and Power Defense SB low voltage power circuit breakers user manual Effective July 2022 Extension rails Extension rail cutout Secondary plug-in connector Secondary terminal blocks Arc hood Option cell (TOC) switch mounting location Optional key interlock mounting location Grounding bar Figure 66. -
Page 42: Drawout Circuit Breaker Dimensions
. Four different frame sizes cover all Magnum PXR and PD-SB circuit breakers from an overall dimensional standpoint . -
Page 43: Section 6: Fixed Circuit Breaker
56 and page 57 . This document cannot, and is not intended to, ensure proper electrical performance of a Magnum PXR and PD-SB breaker that has been modified in any way that is not authorized by Eaton . Safety precautions m WARNING... -
Page 44: General Cleaning Recommendations
Eaton recommends that the following functional tests be performed 5. Press the CLOSE pushbutton to manually close the breaker . on Magnum PXR and PD-SB circuit breakers as part of any Is the breaker closed? maintenance procedure . These tests are meant to check the basic 6. -
Page 45: Procedure
User Manual MN013016EN Magnum PXR and Power Defense SB low voltage power circuit breakers user manual Effective July 2022 Electrical operation functional test Trip unit overload functional test An overload simulation for trip unit testing can be achieved by using ote: Breaker accessory voltages can vary within the same breaker . -
Page 46: Maintenance Schedule
Maintenance schedule Normal operating conditions Table 12 serves as a baseline for developing a maintenance When determining how often a Magnum PXR and PD-SB breaker schedule . Under these conditions, the recommended maintenance should be inspected, the environmental and operating conditions frequencies should be followed as written below . -
Page 47: Inspection Procedures
User Manual MN013016EN Magnum PXR and Power Defense SB low voltage power circuit breakers user manual Effective July 2022 Inspection procedures Arc chute inspection Table 15. Pre-inspection conditions Device Position of poles Mechanism Device position in cassette Fixed Open Closed... -
Page 48: Table 16 . Pre-Inspection Conditions
User Manual MN013016EN Magnum PXR and Power Defense SB low voltage power circuit breakers user manual Effective July 2022 Primary contact inspection Table 16. Pre-inspection conditions Device Position of poles Mechanism Device position in cassette Fixed Open Closed Charged Discharged —... -
Page 49: Table 17 . Pre-Inspection Conditions
Discharged Connected Test Disconnected Removed Procedure Table 19. Greases used on Magnum PXR and PD-SB Grease type Description 1. Inspect the breaker for nicked wires, cracks in plastic parts, Magnalube ® and loose screws . Screws or bolts should be tightened to levels... -
Page 50: Figure 80 . Magnum Pxr Breaker Mechanism Lubrication
User Manual MN013016EN Magnum PXR and Power Defense SB low voltage power circuit breakers user manual Effective July 2022 Figure 80. Breaker mechanism lubrication Figure 83. Drawout system lubrication Figure 81. Pole shaft lubrication Figure 84. Charging handle and gear lubrication Figure 82. -
Page 51: Table 20 . Pre-Inspection Conditions
Test Disconnected Removed Procedure For Magnum PXR and PD-SB breakers with vertically mounted For all Magnum PXR and PD-SB breakers primary disconnects: primary disconnects: 1. Remove the primary disconnect . 1. With breaker removed from cell, verify that vertical adapter nuts 2. -
Page 52: Table 22 . Pre-Inspection Conditions
User Manual MN013016EN Magnum PXR and Power Defense SB low voltage power circuit breakers user manual Effective July 2022 Interlocks inspection Table 22. Pre-inspection conditions Device Position of poles Mechanism Device position in cassette Fixed Open Closed Charged Discharged —... -
Page 53: Figure 91. Levering-In Door In Position Between Disconnect And Test
User Manual MN013016EN Magnum PXR and Power Defense SB low voltage power circuit breakers user manual Effective July 2022 Figure 91. Levering-in door in position between disconnect and test There are NO impediments to tripping/opening . The circuit breaker will... -
Page 54: Troubleshooting
User Manual MN013016EN Magnum PXR and Power Defense SB low voltage power circuit breakers user manual Effective July 2022 Troubleshooting Table 23. Spring charging Problem Possible root cause Actions Breaker won’t charge mechanically Charge handle broken Install replacement handle kit Manual charge handle unable to be pulled Verify breaker is not charged. -
Page 55: Table 25. Contact Opening
User Manual MN013016EN Magnum PXR and Power Defense SB low voltage power circuit breakers user manual Effective July 2022 Table 25. Contact opening Problem Possible root cause Actions Breaker will not open on expected Pinched or damaged wires Repair damage... - Page 56 Undervoltage Release Pickup @ 85% _______________ Trip Indicator Electrical Reset @ 85% __________ Trip Unit Functional Check with Hand-Held Test Kit __________ Trip Unit Primary Injection Test (see MAGNUM PXR and PD-SB AIR CIRCUIT BREAKER TRIP UNIT FIELD TEST FORM ) __________ Interlock Checks...
- Page 57 User Manual MN013016EN Magnum PXR and Power Defense SB low voltage power circuit breakers user manual Effective July 2022 MAGNUM PXR and PD-SB AIR CIRCUIT BREAKER TRIP UNIT FIELD TEST FORM Reference Documents MN013015EN Location _______________________________________________________________ Date_____________________________________________________________ Position _________________________________ Switchgear Mfr_______________________________________...
-
Page 58: Section 8: Renewal Parts
. The renewal parts documentation indicates which parts are available In no event will Eaton be responsible to the purchaser or user in and in what form . For additional information, visit www .eaton .com/ contract, in tort (including negligence), strict liability, or otherwise magnumpxr .
Need help?
Do you have a question about the Magnum PXR and is the answer not in the manual?
Questions and answers