Eaton MPS85N4WEAXX2S Magnum PXR - UL Listed 85 kAIC

Part Number: MPS85N4WEAXX2S
MPS85N4WEAXX2S
Manufacturer
Eaton
Part number
MPS85N4WEAXX2S
Category

Quick Summary

The MPS85N4WEAXX2S is a Magnum low-voltage power circuit breaker for main distribution panels. Engineers grapple with protecting feeders against high fault currents without nuisance trips. It is UL Listed, CE marked, and NEMA compliant, offering regulatory assurance across North American and international installations. Designed for drawout vertical mounting and the Magnum PXR trip unit, it enables safer installation, faster maintenance, and clearer fault diagnostics. With a 5000 A Iu and 85 kAIC interrupt rating, this device delivers dependable protection in demanding industrial environments while supporting lifecycle cost reduction through extended service intervals and compatibility with Power Xpert Protection Manager workflows.

Product Information

Extended Description

MPS85N4WEAXX2S Eaton: Eaton Magnum low voltage power circuit breaker, Magnum PXR, Double standard frame, 5000 A (NNAABBCC), 85 kA, Four-pole, Drawout vertical mounting, PXR25 LSIGAM trip unit
Product Name
Eaton Magnum low voltage power circuit breaker
Catalog Number
MPS85N4WEAXX2S
UPC
786689638108
Product Length/Depth
16.3 in
Product Height
16.8 in
Product Width
44.1 in
Product Weight
319 lb
Compliances
CCC Marked CE Marked NEMA Compliant SABA Listed
Certifications
UL Listed Lloyd's Register Certified ANSI CSA Certified KEMA Certified DNV GL Certified ABS Certified
Frame
Double standard
Number of poles
Four-pole
Type
Magnum PXR
Frame
Double standard
Series
Magnum
Trip Type
PXR25 LSIG ARMS
Number of poles
Four-pole
Rated uninterrupted current (Iu)
5000 A
Interrupt rating
85 kAIC
Interrupt rating
85 kAIC
Rated uninterrupted current (Iu)
5000 A
Zone selective interlocking application paper Magnum circuit breakers with Power Xpert Release trip units product aid Selevctive coordination application paper - IA0120000E3 Magnum PXR and PD-SB double and double narrow frame UL Certificate of Compliance Magnum PXR and PD-SB double and double narrow frame UL Certificate of Compliance Microsoft Word - Power Xpert Protection Manager Quick Start Guide.docx Microsoft Word - Power Xpert Protection Manager Quick Start Guide.docx Microsoft Word - Power Xpert Protection Manager Quick Start Guide.docx Circuit Protection, Power Breakers, Contactors and Fuses, Volume 4, Tab 3 Power Xpert Protection Manager x64 22.6 1 Power Xpert Protection Manager x64 22.6 1 Eaton Specification Sheet - MPS85N4WEAXX2S Eaton Specification Sheet - MPS85N4WEAXX2S Magnum low-voltage power circuit breakers (ANSI and IEC) renewal parts and accessories Magnum PXR 20/25 electronic trip units time current curves Molded case and low-voltage power circuit breaker health Molded case and low-voltage power circuit breaker health Molded case and low-voltage power circuit breaker health
Magnum PXR trip unit with LSIG ARMS enables selective protection and fast fault isolation, reducing arc energy exposure and nuisance trips. In power distribution panels, this translates to fewer outages and easier fault diagnostics during maintenance. The 85 kAIC interrupt rating delivers robust short-circuit protection in demanding environments. For mission-critical processes, this capability minimizes equipment damage and supports safe startup in high-current networks. Rated uninterrupted current (Iu) of 5000 A ensures large feeder protection and reliable load handling. In large distribution boards feeding motors and PLCs, the device maintains uninterrupted service during normal operation while providing quick clear during faults. Drawout vertical mounting and a double standard frame unlock safe maintenance and straightforward interchange with existing breakers. Four-pole configuration supports balanced, complete circuit protection across all phases. UL Listed, CE Marked, NEMA Compliant, and additional certifications reduce procurement risk and simplify regulatory approvals for global installations. Integration with Power Xpert Protection Manager and availability of time-current curves and product literature support lifecycle optimization for growing facilities.

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FAQs

The unit features a drawout vertical mounting format with a double standard frame, designed to integrate into standard panels and bus assemblies. Its Magnum PXR trip unit supports straightforward field replacement and coordination with existing protection schemes, minimizing downtime during upgrades and retrofits.
This breaker provides an 85 kAIC interrupt rating and a rated uninterrupted current (Iu) of 5000 A, delivering robust protection for high-current feeders while supporting continuous operation of critical loads in demanding industrial environments.
Yes. With four poles, a Magnum PXR trip unit, and precise coordination capabilities, the MPS85N4WEAXX2S is well-suited for high-density motor control centers, providing selective protection and fast fault isolation to minimize motor damage and downtime.
The breaker is UL Listed, CE Marked, and NEMA Compliant, with additional certifications from Lloyd's Register, CSA, KEMA, DNV GL, and ABS, enabling global deployment and simplifying regulatory approvals across diverse markets.
The unit is compatible with Power Xpert Protection Manager for protection management workflows. Access to time-current curves and manufacturer literature supports faster diagnostics, proactive maintenance, and optimized protection schemes, contributing to reduced downtime and longer asset life.