Eaton Magnum PXR Technical Product Manual
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Eaton Magnum PXR Technical Product Manual

Low voltage power circuit breakers
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Summary of Contents for Eaton Magnum PXR

  • Page 1 Magnum PXR low voltage power circuit breakers Technical product guide...
  • Page 2 CONTRACT BETWEEN THE PARTIES. In no event will Eaton be responsible to the purchaser or user in contract, in tort (including negligence), strict liability or other-wise for any special, indirect, incidental or consequential damage or loss whatsoever, including but not limited to...

  • Page 3: Table Of Contents

    Magnum PXR ANSI breaker family ratings ....... . . 23...
  • Page 4 Time delay undervoltage module ......... . 52 MAGNUM PXR PRODUCT GUIDE PA013006EN September 2022 www.eaton.com...
  • Page 5 Condensation heaters in enclosures ........67 MAGNUM PXR PRODUCT GUIDE PA013006EN September 2022 www.eaton.com...

  • Page 6: Overview Of The Magnum Pxr Low Voltage Circuit Breaker

    Overview of the Magnum PXR low voltage circuit breaker Magnum family Customers now have the capability of providing overview an electrical distribution system with: Breaker overview Superior flexible and • Eaton’s Magnum low programmable protec- voltage power circuit tion and coordination...

  • Page 7: Magnum Pxr (Ul Standards)

    Overview of the Magnum PXR low voltage circuit breaker Magnum PXR In addition, Magnum PXR is suitable for use in UL (UL standards) 1558 “Certified Magnum PXR low voltage metal Magnum PXR low voltage enclosed switchgear” power circuit breakers are UL listed, designed,...
  • Page 8 Overview of the Magnum PXR low voltage circuit breaker The Magnum PXR family ANSI C37 .50 “Test • (identified by a medium Procedures for Low gray front cover) of low Voltage AC Power voltage power circuit Circuit Breakers Used in breakers is ANSI designed, Enclosures”...

  • Page 9: Universal Family Features

    Overview of the Magnum PXR low voltage circuit breaker Universal family features PXR 25 (High accuracy power and energy metering capable of class 1 metering accuracy with standard Each family has its own unique performance and features, communications) each Magnum breaker boasts a wide array of common design elements.
  • Page 10 Overview of the Magnum PXR low voltage circuit breaker A range of trip unit options, coupled with field replaceable trip units, enables compatibility with global requirements and allows upgrade from the most basic protective device to a high end, intelligent node in a power system.

  • Page 11: Motorized Remote Racking (Mr2)

    Overview of the Magnum PXR low voltage circuit breaker Motorized remote racking (MR2) Two-step stored energy mechanism Magnum circuit breakers are equipped with a true 2-step Eaton’s integral motorized remote racking (MR2) provides stored energy mechanism. a means of remotely racking any Magnum drawout circuit breaker.

  • Page 12: Value-Added Features

    Overview of the Magnum PXR low voltage circuit breaker Value-added features Magnum provides numerous other internal and external features that further enhance the reliability, maintenance and safety of this industry leading product offering. Several additional common features are highlighted below. See...

  • Page 13: Front Cover Details

    Overview of the Magnum PXR low voltage circuit breaker Front cover details Controls and indicators are functionally grouped on the breaker faceplate to optimize the user interface, visibility and ease of use. The modern, through-the-door design delivers maximum safety and convenience.

  • Page 14: Breaker Internal Features

    Overview of the Magnum PXR low voltage circuit breaker Breaker internal and rear view features Magnum circuit breakers are designed for ease of access for inspection, modification and maintenance at the point of use. The breaker front cover is easily removed with four captive bolts, revealing the modular internal breaker features.

  • Page 15: Breaker Secondary

    Overview of the Magnum PXR low voltage circuit breaker Breaker secondary Standard, double narrow, and double frame cassettes are available with two terminal block options: All of the electrical accessories internal to the breaker are Fully wired: includes 12 terminal blocks for a total of 72 wired to the 84 point connector at the breaker secondary.
  • Page 16 Not included in 72 point secondary terminal block configuration. Figure 14. Secondary terminal layout Switchgear providers including Eaton assemblies may customize to other terminal configurations. See Table 1 for terminal to accessory assignment. MAGNUM PXR PRODUCT GUIDE PA013006EN September 2022 www.eaton.com...
  • Page 17 Overview of the Magnum PXR low voltage circuit breaker Table 1. Terminal to accessory assignment PXR point PXR point General description Function Individual point description position name O1NO Overcurrent trip switch 1 make Overcurrent trip switch 1 Indicates when breaker opens via the trip unit...
  • Page 18 Overview of the Magnum PXR low voltage circuit breaker Table 1. Terminal to accessory assignment (continued) PXR point PXR point General description Function Individual point description position name C37 a b Aux switch 9 b C38 a b Aux switch 9 a...

  • Page 19: Breaker Mounting Configurations

    Overview of the Magnum PXR low voltage circuit breaker Breaker mounting configurations Cassettes – available styles Magnum circuit breakers are available in both fixed and Narrow frame cassettes (for narrow frame and double narrow frame breakers) drawout configurations; however, in a small number...

  • Page 20: Design Configuration Flexibility

    Overview of the Magnum PXR low voltage circuit breaker Basic cassette without copper stabs: The basic Special 5000A double narrow and 6000A double • • cassette can also be ordered without factory supplied wide runback: Eaton’s 5000 A DN and 6000 A DW are provided with the run back bus.
  • Page 21 Overview of the Magnum PXR low voltage circuit breaker Drawout mounting: Zero clearance mounting provides Drawout breaker levering: Can be accomplished with • • for vertical stacking economy. DISCONNECT, TEST and compartment door closed using a standard 3/8 inch CONNECT positions can be accessed with the door (10mm) drive extension, without the need for special closed with clear visual indication of position.

  • Page 22: Technical Data And Ratings

    Figure 28. Narrow frame breaker better coordination with downstream devices. Standard frame (800 – 3200 Amps): Ideally suited for • vertically stacked modular construction. Figure 29. Standard frame breaker MAGNUM PXR PRODUCT GUIDE PA013006EN September 2022 www.eaton.com...

  • Page 23: Magnum Pxr Ansi Breaker Family Ratings

    415/16.3 (mm/in) Weight - Fixed bkr (lbs) a Breaker weights are based on the heaviest breaker configurations. Actual weights may vary depending configuration. Table 4. Magnum PXR ANSI breaker family ratings (Class UL1066) Interrupting rating (kA) 800 Amp 1200 Amp...

  • Page 24: Technical Data Sheet

    Technical data and ratings Technical data sheet Table 5. Magnum PXR low voltage power circuit breakers ANSI rms Symmetrical current ratings kA 50/60 Hz Short time Short time Breaker Interrupting Interupting Interrupting withstand withstand Frame type catalog rating at 254...
  • Page 25 Technical data and ratings Table 5. Magnum PXR low voltage power circuit breakers ANSI (continued) rms Symmetrical current ratings kA 50/60 Hz Short time Short time Breaker Interrupting Interupting Interrupting withstand withstand Frame type catalog rating at 254 rating at 508...

  • Page 26: Catalog Builder

    Exclusionary rules apply. Refer to price list. Confirm all final part numbers with Eaton. A Magnum PXR circuit breaker is defined by a 25-character catalog number with definitions shown in the following decoder table. If the breaker is a drawout breaker, the associated drawout cassette would be defined by a 15-character catalog number.
  • Page 27 K = DO breaker in cassette (no shutters), required & common wired secondary with door kit M = DO breaker in cassette (with shutters), required & common wired secondary with door kit Future use MAGNUM PXR PRODUCT GUIDE PA013006EN September 2022 www.eaton.com...

  • Page 28: Cassette

    (tie configuration) (5000 A DN) Arc hood A = Arc hood installed Door frame and gasket kit XN = Door frame and gasket kit not included DN = Door frame and gasket kit included MAGNUM PXR PRODUCT GUIDE PA013006EN September 2022 www.eaton.com...

  • Page 29: Nameplate Identification And Markings

    A range from 42 kA up to 100 kA interrupting: • Application on power distribution systems with higher A Magnum PXR circuit breaker is easily identified by its available fault currents. specific nameplate designation. Review the nameplate example provided below.

  • Page 30: Pxr Trip Unit And Communication Modules

    • to measure the current through the circuit breaker. The mechanical action required to initiate tripping of the circuit breaker is provided by a special low-energy trip actuator. MAGNUM PXR PRODUCT GUIDE PA013006EN September 2022 www.eaton.com...

  • Page 31: Pxr Protection

    Maintenance Mode Pickup x (I 1.5, 2.5, 4.0, 6.0, 8.0, 10.0 (ARMS) (A) ANSI 50 Relay Contact for Remote Indication of Mode Description applies to both the PXR 20 and PXR 25. MAGNUM PXR PRODUCT GUIDE PA013006EN September 2022 www.eaton.com...

  • Page 32: Pxr Trip Unit Module Catalog Numbers

    Refer to Table 9 below for existing digitrip options and their equivelent PXR trip unit offering. The catalog characters 13 and 14 in the full 25-character catalog string indicate the trip unit the breaker is equipped with. Table 9. Conversion of Magnum DS Digitrip Catalog Characters to Magnum PXR (characters 13 and 14) Digitrip trip unit...

  • Page 33: Trip Unit Wiring

    PXR trip unit and communication modules Trip unit wiring Below is the wiring diagram for a 3 pole circuit breaker. For more information and additional wiring diagram resources, refer to MN013016EN. Figure 34. Maintenance Mode wiring MAGNUM PXR PRODUCT GUIDE PA013006EN September 2022 www.eaton.com...

  • Page 34: Common Pxr Unit Features

    PXR 20 to wire tie the cover and discourage from Eaton. The trip unit will also display the value of I unauthorized access to the overcurrent protection in the lower corner of the display when powered up to setting switches.

  • Page 35: Measurement

    Neutral current accuracy for internal (4-pole) breakers, external neutral sensor accuracy is dependent on the selected sensor’s accuracy and tolerances. Demand values are on a programmable fixed or sliding window of 5, 15 or 60 minutes. Maximum and minimum values are held until reset. MAGNUM PXR PRODUCT GUIDE PA013006EN September 2022 www.eaton.com...

  • Page 36: Mechanical Trip Flag Pop-Out Indicator

    Magnum breakers supplied with integral trip Magnum breakers with integral trip units. Refer to Section units. The thermal memory function provides overtem- 4: Magnum PXR accessories - Mechanical trip flag pop-out perature protection on load circuits against the effects of indicator for more details.

  • Page 37: Arcflash Reduction Maintenance System

    An Eaton Dashboard display interface module can be used as one of the communication methods to arm the protection function remotely from a safe distance. Figure 38. ARMS 1.5x active protection curve MAGNUM PXR PRODUCT GUIDE PA013006EN September 2022 www.eaton.com...

  • Page 38: Power Xpert Protection Manager Software (Pxpm)

    -based software that can be used to ® ® monitor, configure, control and test Eaton PXR 20/25 trip units. The PXPM software and PXR trip unit, in conjunc- tion, are designed to make it easier for customers to access breaker health information, conduct diagnosis and troubleshooting activities, verify settings, as well as perform testing.

  • Page 39: Magnum Pxr Accessories

    275 W/18 W MSTH • 60 Vdc 42-66 275 W/18 W MSTD 110-127 Vac/Vdc 77-138 450 W/10 W MSTA 220-250 Vac/Vdc 154-275 450 W/10 W MSTR Figure 40. Through the window electrical accessories MAGNUM PXR PRODUCT GUIDE PA013006EN September 2022 www.eaton.com...

  • Page 40: Spring Release And Latch Check Switch

    208-240 Vac 177-264 Vac 450 VA MSRR is “ready to close. ” This wiring is done internally to the breaker and does not require any additional wiring at the secondaries. MAGNUM PXR PRODUCT GUIDE PA013006EN September 2022 www.eaton.com...

  • Page 41: Undervoltage Release

    480 Vac 408-528 Vac 144-288 Vac 400 VA/10 VA MUVRJ 600 Vac 510-660 Vac 180-360 Vac 400 VA/10 VA MUVRK Figure 45. All three accessories (ST, SR, UVR) installed Figure 44. Undervoltage release MAGNUM PXR PRODUCT GUIDE PA013006EN September 2022 www.eaton.com...

  • Page 42: Auiliary Switch

    The remote trip reset will act to Overcurrent Trip Switch (Bell Alarm) • reset the trip indicator and OTS but will not reset the trip unit status LEDs that can be reset via communications. Motor Operator • MAGNUM PXR PRODUCT GUIDE PA013006EN September 2022 www.eaton.com...

  • Page 43: Overcurrent Trip Switch (Bell Alarm)

    24 Vdc 20-26 Vdc 300% of running MMOT3 48 Vdc 41-53 Vdc 500% of running MMOT4 110-125 Vac/Vdc 94-138 Vdc 600% of running MMOT1 220-250 Vac/Vdc 187-275 Vdc 600% of running MMOT2 MAGNUM PXR PRODUCT GUIDE PA013006EN September 2022 www.eaton.com...

  • Page 44: Typical Magnum Breaker Control Circuit Diagram

    In Figure 50 below, the typical Magnum breaker control circuit diagram is detailed. Actual circuit diagram may vary depending on breaker configuration and application requirements. Figure 50. Typical Magnum PXR control circuit diagram MAGNUM PXR PRODUCT GUIDE PA013006EN September 2022 www.eaton.com...

  • Page 45: Mechanical Accessories

    CONNECTED position, preventing it from being closed. Up to three lock cylinders Off Key Lock • can be installed on one cassette. Eaton supplies the lock Cassette Lock provisions only. The customer is responsible for the locks, •...

  • Page 46: Lock-Off Cover

    When the breaker is levered into the cassette, the shutters automatically open, permitting primary connections to be made. Figure 58. Cell switch Figure 56. Safety shutters in CLOSED position MAGNUM PXR PRODUCT GUIDE PA013006EN September 2022 www.eaton.com...

  • Page 47: Door Escutcheon

    Mechanical interlocks are available for both fixed and drawout breakers, and in both two-way and three-way versions. See Figure 62 for details on the interlock types. Figure 60. Door escutcheon and gasket MAGNUM PXR PRODUCT GUIDE PA013006EN September 2022 www.eaton.com...
  • Page 48 Three power supplies (generators or transformers) on the same bus bar, making operation in parallel impossible. One or two circuit breakers out of three can be closed at the same time. Figure 62. Mechanical interlock configurations MAGNUM PXR PRODUCT GUIDE PA013006EN September 2022 www.eaton.com...

  • Page 49: Accessories And Peripheral Devices

    The handheld pendant includes “Open” and “Close” • structures pushbuttons to allow remote operation of the circuit breaker. This requires the breaker to be equipped with a shunt trip and spring release, and additional wiring. MAGNUM PXR PRODUCT GUIDE PA013006EN September 2022 www.eaton.com...

  • Page 50: Universal Remote Power Racking System (Type Rpr-2)

    Auxiliary control power is connected to the circuit breaker’s secondary terminal block. We recommend an isolated supply such as the Eaton PSG family, 24 Vdc. 0.5A. Remember: auxiliary control power is not required to provide current protection features.

  • Page 51: Secondary Injection Testing Via Pxpm

    If you would like to run another test, select “Continue • Testing” If testing is complete, select “Stop Testing” • Figure 68. Example of a Completed Secondary Injection Test MAGNUM PXR PRODUCT GUIDE PA013006EN September 2022 www.eaton.com...

  • Page 52: Time Delay Undervoltage Module

    Breaker UVR Kit catalog module required Time settings number Figure 71. Time Delay Undervoltage Module 120 Vac 110-127 Vac 01s; 0.5s; 1.0s; 2.0s MTDUVR120V 230 Vac 208-240 Vac 01s; 0.5s; 1.0s; 2.0s MTDUVR230V MAGNUM PXR PRODUCT GUIDE PA013006EN September 2022 www.eaton.com...

  • Page 53: Communication Accessories

    Stop bit 00 = 1 bit 01 = 2 bits CAM - Communications adapter modules All styles of the Magnum PXR trip unit support Communication Adapter Modules (CAMs). These modules provide communication to either Modbus RTU or Profibus field networks.

  • Page 54: Communication Configurations

    Figure 73. Communication modules Shown are multiple configuration possibilities for the Magnum PXR with CAM connections and Modbus RTU connections to a PX Gateway or an Operator Interface or a PLC interface or a Dashboard or Dashboard Lite. For more...

  • Page 55: Magnum Pxr Applications

    When sizing transformer breakers to allow The application of Eaton’s Magnum PXR circuit breakers for temporary overload conditions, consideration should to resistance welding circuits is shown in Figure 74 of the...
  • Page 56 Magnum PXR applications Figure 74. Magnum PXR breaker continuous current (I ) selection guide for resistance welding applications MAGNUM PXR PRODUCT GUIDE PA013006EN September 2022 www.eaton.com...

  • Page 57: Zone Selective Interlocking

    20 trip and set for selective coordination. units per level. All Eaton circuit breaker and protective During fault conditions, each trip unit that senses the relays employ the same circuits to make the ZSI systems fault sends a restraining signal to all upstream trip units.

  • Page 58: Zsi Testing

    ZSI on the bottom when ZSI is enabled. When there is a ZSI input signal detected on the input Additional information on ZSI can be found in the Eaton terminal the display of the PXR trip unit will show a check- application note AP02602002EN.

  • Page 59: Low Voltage High Resistance Ground Fault Sensing

    The flexibility of the Magnum PXR circuit breaker is the right product to provide the protection and coordination Ground fault protection can be added to breakers not that is required for maximum uptime.
  • Page 60 10:1 + 10:1 10:1 CT to measure the ground current. The current flowing in 100:1 10:1 the total ground current. The sensor is then wired to the breaker secondary contacts C7 and C8. MAGNUM PXR PRODUCT GUIDE PA013006EN September 2022 www.eaton.com...

  • Page 61: Phasing On Double-Wide Application

    Power system coordination Eaton power distribution enclosure that it will be applied The tables for selective coordination to the Magnum PXR can be found in the IA01200002E document located on Eaton.com/magnumpxr.

  • Page 62: Maintenance, Tesing, And Operating Conditions

    High cycling Greater than one operation Inspect every 1500 should be taken into consideration. Magnum PXR break- every 2 minutes operations ers are tested to meet and exceed ANSI/IEEE C37 .16. For instruction on inspection process, see Magnum PXR...

  • Page 63: Breaker Health Monitoring

    The parameters that are monitored by Eaton’s PXR trip units include short circuits, overloads, operations, tempera- to protect the system. The internal damage that occurs during repeated fault current interruption could impact ture, and run-time.

  • Page 64: Testing

    This includes the voltage divider board used with PXR 25 trip units. Refer to the switchgear manufac- turer for additional guidance on assembly testing. Figure 84. Waveform capture screen on the PXPM software MAGNUM PXR PRODUCT GUIDE PA013006EN September 2022 www.eaton.com...

  • Page 65: Usual Service Conditions

    Magnum breakers are tested and fully rated for use in Normal environmental conditions ambient temperatures from 0°C to 40°C. Thermal de-rating Magnum PXR is designed to be used in a wide range of tables are provided for different Magnum breakers operat- environmental conditions, however, certain conditions ing in switchboards at various ambient temperatures above can affect the breaker’s longevity.

  • Page 66: Altitude Factors

    Test bus configuration The bus bar size examples shown here are those specified by ANSI, IEC 947-1 and/or used by Eaton in their breaker type testing. They are for 3 meter long bus bar with the faces vertical and painted flat black. For other bus bar configurations, larger bus bar sizes may be required or the breaker may have to be de-rated.

  • Page 67: Recommended Electrical Clearances

    This is intended to prevent the formation of condensation within the enclosure or on electrical components, avoiding any corrosion that might be caused by the moisture. Eaton provides this option on all enclosures. W - Cassette width +3.0 in...
  • Page 68 Eaton.com © 2022 Eaton Follow us on social media to get the All Rights Reserved latest product and support information. Eaton is a registered trademark. Printed in USA Publication No. PA013006EN / VCG All other trademarks are property September 2022...

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