Eaton MPS8503WEAXX2Q Magnum low voltage circuit breaker - 85 kAIC

Part Number: MPS8503WEAXX2Q
MPS8503WEAXX2Q
Manufacturer
Eaton
Part number
MPS8503WEAXX2Q
Category

Quick Summary

The Eaton MPS8503WEAXX2Q Magnum low voltage circuit breaker is a three-pole protection device designed for dense power distribution applications. This solution addresses downtime and nuisance trips by delivering reliable, fast, and selective protection for feeders and downstream equipment. The unit carries multiple certifications, including CE Marked, UL Listed, and CSA Certified, supporting global deployments and panel-building requirements. With Power Xpert Release trip unit integration and a double-standard frame, it also enables scalable protection strategies and simplified sourcing. For engineers and procurement teams, the combination of robust performance and broad compliance translates to lower total ownership costs and faster project execution, especially in motor control centers and critical power panels.

Product Information

Extended Description

MPS8503WEAXX2Q Eaton: Eaton Magnum low voltage power circuit breaker, Magnum PXR, Double standard frame, 5000 A (ABCABC), 85 kA, Three-pole, Drawout vertical mounting, PXR25 LSIAM trip unit
Product Name
Eaton Magnum low voltage power circuit breaker
Catalog Number
MPS8503WEAXX2Q
UPC
786689635718
Product Length/Depth
16.3 in
Product Height
16.8 in
Product Width
31.1 in
Product Weight
237 lb
Compliances
CE Marked SABA Listed CCC Marked NEMA Compliant
Certifications
CSA Certified KEMA Certified ANSI UL Listed Lloyd's Register Certified DNV GL Certified ABS Certified
Frame
Double standard
Number of poles
Three-pole
Type
Magnum PXR
Frame
Double standard
Series
Magnum
Trip Type
PXR25 LSI ARMS
Number of poles
Three-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 Magnum PXR low voltage power circuit breakers user manual Magnum PXR low voltage power circuit breakers user manual Magnum PXR low voltage power circuit breakers user manual 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 - MPS8503WEAXX2Q Eaton Specification Sheet - MPS8503WEAXX2Q Magnum low-voltage power circuit breakers (ANSI and IEC) renewal parts and accessories Magnum PXR 20/25 electronic trip units time current curves Cyber security white paper Cyber security white paper Cyber security white paper
Feature → Business Impact → Application: 5000 A rated uninterrupted current (Iu) combined with an 85 kAIC interrupt rating enables the breaker to safely interrupt high fault currents, reducing equipment damage and downtime in demanding industrial environments. This translates to improved reliability for feeders and MCCs, supporting uptime targets in manufacturing and process industries. Feature → Business Impact → Application: PXR25 LSI AM/LSI ARMS trip unit provides advanced protection logic with precise coordination, improving fault isolation and reducing the likelihood of unnecessary outages in complex power networks. Ideal for data centers, automation cells, and critical loads where selective tripping is essential. Feature → Business Impact → Application: Drawout vertical mounting and a double-standard frame simplify installation, maintenance, and retrofit projects by aligning with common cabinet footprints, reducing labor hours and spare-part complexity in large facilities. Feature → Business Impact → Application: Three-pole configuration and Magnum series compatibility ensure consistent protection across multiple feeders and panels, enabling standardized changeovers and streamlined training for maintenance crews. Feature → Business Impact → Application: Comprehensive certifications (CE, UL Listed, CSA) support global compliance and documentation requirements, reducing approval cycles for international projects and ensuring safe operation in mixed regulatory environments. Feature → Business Impact → Application: Power Xpert Protection Manager compatibility enables centralized monitoring and protection upgrades, delivering improved visibility, faster fault diagnosis, and optimized asset management across plant networks.

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FAQs

The MPS8503WEAXX2Q uses a standard Magnum PXR frame with drawout vertical mounting, designed for three-pole configurations in U.S. and international panels. When installing, verify cabinet clearance, connect line and load terminals per the manufacturer’s wiring diagram, and ensure trip unit settings are configured for the intended protection strategy. The unit’s compatibility with Power Xpert Release and existing protection schemes simplifies integration into MCCs and switchgear racks.
Key specs include a rated uninterrupted current (Iu) of 5000 A and an interrupt rating of 85 kAIC. It is a three-pole Magnum PXR device with a double-standard frame, suitable for high-current feeders. The PXR25 LSIAM trip unit provides coordinated protection and arc flash mitigation options, supporting safe operation across diverse industrial loads.
Yes. The three-pole design, 85 kAIC interrupt rating, and 5000 A Iu rating make it well-suited for motor control centers and feeders in heavy industrial environments. Its PXR trip unit supports selective coordination, helping isolate faults to the nearest protection zone while keeping downstream equipment online whenever possible.
The breaker carries multiple certifications, including UL Listed, CSA Certified, CE Marked, and other international marks. These certifications support global deployment, compliance with local electrical codes, and validation for panel builders. Always verify the exact certificate documentation in the provided downloads to meet project-specific regulatory requirements.
The unit’s standard frame and drawout design simplify installation, inspection, and parts replacement, reducing labor time during maintenance. Its high fault current handling and robust protection reduce unexpected outages, delivering a lower total cost of ownership and improved asset uptime across industrial facilities.