Eaton MPS8503HEAXX2Q Magnum low-voltage breaker - 85 kAIC

Part Number: MPS8503HEAXX2Q
MPS8503HEAXX2Q
Manufacturer
Eaton
Part number
MPS8503HEAXX2Q
Category

Quick Summary

Eaton Magnum low-voltage power circuit breaker provides robust protection for industrial power distribution. Engineers often wrestle with nuisance trips, mismatched protection curves, and uptime challenges as loads grow. UL Listed, CSA Certified, and CE Marked ensure broad regulatory acceptance, while NEMA Compliant and SABA Listed reinforce field compatibility across markets. This unit features a double-standard frame, fixed horizontal mounting, three poles, and a PXR25 LSI ARMS trip unit that works with Power Xpert Protection Manager for coordinated protection. With a 5000 A Iu rating and an 85 kAIC interrupt capacity, it supports reliable performance and longer asset life in demanding switchgear assemblies, helping reduce downtime and maintenance costs in modern facilities.

Product Information

Extended Description

MPS8503HEAXX2Q Eaton: Eaton Magnum low voltage power circuit breaker, Magnum PXR, Double standard frame, 5000 A (ABCABC), 85 kA, Three-pole, Fixed horizontal mounting, PXR25 LSIAM trip unit
Product Name
Eaton Magnum low voltage power circuit breaker
Catalog Number
MPS8503HEAXX2Q
UPC
786689629557
Product Length/Depth
16.3 in
Product Height
16.8 in
Product Width
31.1 in
Product Weight
237 lb
Compliances
NEMA Compliant CCC Marked CE Marked SABA Listed
Certifications
CSA Certified KEMA Certified Lloyd's Register Certified ANSI UL Listed ABS Certified DNV GL 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 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 - MPS8503HEAXX2Q Eaton Specification Sheet - MPS8503HEAXX2Q 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
Feature: PXR25 LSI ARMS trip unit provides precise protection and selective coordination. Business Impact: Reduces nuisance trips and arc-flash risk while enabling faster fault isolation. Application: LV distribution panels in manufacturing lines and data centers. The PXR trip unit also integrates with the Power Xpert Protection Manager for centralized protection management and diagnostics. Feature: 85 kAIC interrupt rating supports high fault currents, improving system resilience. Business Impact: Keeps critical loads online during short-circuit events and minimizes equipment damage. Application: Industrial feeders and large motor drives. Feature: Rated uninterrupted current (Iu) of 5000 A enables safe, continuous operation of heavy loads. Business Impact: Allows larger feeders and parallel bus configurations without compromising protection. Application: Large manufacturing cells and process lines. Feature: Frame: Double standard with fixed horizontal mounting provides compatibility with common LV panels. Business Impact: Simplifies retrofit and panel upgrades, reducing installation time and costs. Application: Upgrade projects and new builds across global facilities. Feature: Three-pole design ensures balanced protection across phases. Business Impact: Improves phase-to-phase protection and coordination in 3-phase systems. Application: Three-phase motor control and distribution networks. Feature: Power Xpert Protection Manager compatibility enables remote monitoring and protection analytics. Business Impact: Improves OPEX through predictive maintenance and faster root-cause analysis. Application: Enterprise-level protection strategies and remote sites. Feature: Certifications and compliance (UL, ANSI, CSA, CE, NEMA, SABA) provide regulator-ready performance. Business Impact: Streamlines regulatory approvals and commissioning. Application: Global deployments across industries.

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FAQs

The MPS8503HEAXX2Q is designed for fixed horizontal mounting in standard double-standard frame assemblies. It is a three-pole unit measuring 16.3 in in length, 16.8 in in height, and 31.1 in in width, weighing 237 lb. Its form factor supports integration into common LV panels and panel boards, simplifying retrofits and field upgrades while maintaining precise alignment with companion Magnum PXR trip units and Power Xpert components.
Key specs include a rated uninterrupted current (Iu) of 5000 A and an interrupt rating of 85 kAIC. It is a three-pole device with a Magnum PXR trip unit (PXR25 LS I ARMS) and a double-standard frame. These ratings support high-load feeders and robust fault-current handling in demanding industrial environments.
Yes. The MPS8503HEAXX2Q employs the PXR25 LSI ARMS trip unit designed for selective coordination, enabling staged tripping that isolates faults with minimal impact on non-faulted sections. When paired with Power Xpert Protection Manager, operators gain visibility and coordination across feeders, improving uptime and reducing arc-flash exposure in multi-zone power networks.
This model carries UL Listed, ANSI, and CSA Certified marks and CE Marking, with additional certifications from KEMA, Lloyd’s Register, ABS, and DNV GL. Compliances include NEMA and SABA listings, supporting global deployments. These certifications ease regulatory approvals, factory inspections, and customer acceptance in diverse markets.
Consider renewal parts and accessories documented by Eaton, including PXR trip-unit upgrades and renewal kits, to extend lifecycle. Integration with Power Xpert Protection Manager enables remote monitoring, predictive maintenance, and faster diagnostics, reducing on-site visits. For ROI, leverage selective coordination to minimize downtime and improve protection accuracy across motors and feeders.