Eaton MPSC503WEAXX2F Magnum low voltage power circuit breaker - UL Listed 100 kAIC

Part Number: MPSC503WEAXX2F
MPSC503WEAXX2F
Manufacturer
Eaton
Part number
MPSC503WEAXX2F
Category

Quick Summary

Eaton MPSC503WEAXX2F Magnum low voltage power circuit breaker protects industrial electrical distribution with precision and reliability. In fast-moving facilities, nuisance trips and compatibility gaps can cause costly downtime; this breaker design mitigates those risks with a robust trip unit and a durable frame. It carries UL Listed, CE Marked and CSA Certified classifications, along with other respected certifications that support regulatory compliance and field acceptance. By aligning with Power Xpert Protection Manager for protection coordination, and leveraging the PXR20 LSIGAM trip unit, this solution delivers safer operation and easier maintenance while supporting scalable, long-term infrastructure upgrades.

Product Information

Extended Description

MPSC503WEAXX2F Eaton: Eaton Magnum low voltage power circuit breaker, Magnum PXR, Double standard frame, 5000 A (ABCABC), 100 kA, Three-pole, Drawout vertical mounting, PXR20 LSIGAM trip unit
Product Name
Eaton Magnum low voltage power circuit breaker
Catalog Number
MPSC503WEAXX2F
UPC
786689630904
Product Length/Depth
16.3 in
Product Height
16.8 in
Product Width
31.1 in
Product Weight
237 lb
Compliances
CCC Marked NEMA Compliant CE Marked SABA Listed
Certifications
KEMA Certified Lloyd's Register Certified ANSI UL Listed CSA Certified DNV GL Certified ABS Certified
Frame
Double standard
Number of poles
Three-pole
Type
Magnum PXR
Frame
Double standard
Series
Magnum
Trip Type
PXR20 LSIG ARMS
Number of poles
Three-pole
Rated uninterrupted current (Iu)
5000 A
Interrupt rating
100 kAIC
Interrupt rating
100 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 - MPSC503WEAXX2F Eaton Specification Sheet - MPSC503WEAXX2F 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 → Business Impact → Application: High interrupt rating of 100 kAIC minimizes fault energy and limits damage to surrounding equipment, reducing downtime and maintenance costs in critical power feeds for manufacturing lines. Application: Heavy-load process lines and utility feeders require rapid isolation during faults to protect motors, drives, and transformers. Feature → Business Impact → Application: Rated uninterrupted current (Iu) of 5000 A enables sustained operation under high-load conditions, improving system reliability and reducing nuisance trips in peak demand periods. Application: Main distribution panels serving continuous processes and data-intensive equipment. Feature → Business Impact → Application: Three-pole, drawout vertical mounting simplifies installation, testing, and replacement in standard switchgear, shortening downtime during maintenance windows. Application: Retrofit projects and new build-outs in industrial plants. Feature → Business Impact → Application: PXR20 LSIG ARMS trip unit provides selective coordination and improved arc-flash performance, lowering risk for personnel and enabling safer maintenance. Application: Protective schemes in complex motor and conveyor systems. Feature → Business Impact → Application: Double standard frame and Magnum PXR family compatibility ensure broad panel and legacy integration, reducing part variety and inventory costs. Application: Upgrading aging breakers within existing switchgear footprints. Feature → Business Impact → Application: Comprehensive certifications (UL, CSA, CE, KEMA, Lloyd’s Register, etc.) support compliance audits and global deployment. Application: Global projects requiring cross-border approvals; inspector-ready asset.

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FAQs

The MPSC503WEAXX2F is a three-pole, drawout, vertical-mount breaker designed for Magnum PXR frames with a double-standard chassis. It fits standard LV switchgear and supports straightforward replacement in legacy panels. When installing, verify busbar alignment, torque settings for terminal lugs, and that the frame and poles match the existing setup to ensure proper trip operation and safe maintenance access.
This breaker provides a rated uninterrupted current (Iu) of 5000 A and an interrupt rating of 100 kAIC. It features a three-pole configuration, Magnum PXR trip type with LSIG ARMS, and a double standard frame. These specs support high-load industrial feeders, selective coordination, and protection of motors and transformers against short circuits.
Yes. The unit carries UL Listed, CE Marked, and CSA Certified classifications, along with additional certifications (KEMA, Lloyd’s Register, DNV GL, ABS, among others) that support global compliance and audit readiness. This makes it suitable for multinational deployments requiring consistent certification across sites.
Industries with demanding protection needs—such as manufacturing, process industries, data centers, and oil and gas—benefit from the 100 kAIC interrupt rating, 5000 A Iu, and robust protection schemes. The drawout design and compatibility with protection management systems support reliable operation, reduced downtime, and easier maintenance in high-demand environments.
The combination of high fault current protection, durable construction, and broad certifications translates to lower maintenance costs and longer service life. Integration with Power Xpert Protection Manager enables coordinated protection, faster fault diagnosis, and optimized replacement cycles, resulting in reduced downtime and improved overall equipment effectiveness (OEE).