Eaton MPSC503HEAXX2F Magnum LV breaker - UL 100 kAIC

Part Number: MPSC503HEAXX2F
MPSC503HEAXX2F
Manufacturer
Eaton
Part number
MPSC503HEAXX2F
Category

Quick Summary

Eaton Magnum low-voltage power circuit breaker protects industrial electrical systems from overcurrent in power distribution panels. Maintenance teams often face nuisance trips, long downtime, and challenging protection settings that slow project timelines. This model carries UL Listed, CE Marked, and Lloyd’s Register certifications, along with additional approvals, ensuring compliance across global sites. By leveraging the PXR20 LSIG ARMS trip unit and Power Xpert Protection Manager compatibility, engineers gain precise fault coordination and streamlined configuration. The result is safer operation, reduced downtime, and lower total cost of ownership through standardized protection across panels and machines.

Product Information

Extended Description

MPSC503HEAXX2F Eaton: Eaton Magnum low voltage power circuit breaker, Magnum PXR, Double standard frame, 5000 A (ABCABC), 100 kA, Three-pole, Fixed horizontal mounting, PXR20 LSIGAM trip unit
Product Name
Eaton Magnum low voltage power circuit breaker
Catalog Number
MPSC503HEAXX2F
UPC
786689634988
Product Length/Depth
16.3 in
Product Height
16.8 in
Product Width
31.1 in
Product Weight
237 lb
Compliances
CE Marked CCC Marked NEMA Compliant SABA Listed
Certifications
Lloyd's Register Certified KEMA 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 - MPSC503HEAXX2F Eaton Specification Sheet - MPSC503HEAXX2F 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
Three-pole Magnum PXR trip unit with LSIG ARMS delivers precise protection coordination, reducing nuisance trips and enabling selective protection for demanding loads. This supports safer startup sequences and faster fault isolation in complex industrial gear, making it ideal for main feeders in manufacturing cells and data-center environments. The fixed horizontal mounting on a double standard frame simplifies installation and retrofits into existing enclosures, reducing commissioning time and field labor costs. With an interrupt rating of 100 kAIC and Iu of 5000 A, the breaker withstands high fault currents, decreasing the need for upstream device upgrades and improving overall system reliability. Compatibility with Power Xpert Protection Manager enables centralized protection management and event analytics, driving operational efficiency and predictable maintenance planning. Certified to UL, CE, and other global standards, it supports compliant deployment across sites, while its rugged construction addresses long-life operation in harsh industrial settings. Some customers also value the ready access to Eaton technical resources, application notes, and renewal parts catalogs to maintain uptime and optimize spare parts inventory, ultimately lowering total cost of ownership.

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FAQs

The MPSC503HEAXX2F uses a standard Magnum PXR framework with a double standard frame and fixed horizontal mounting, designed for straightforward drop-in replacement or retrofit in typical 3-pole, 3Ø panels. Its 16.3 in depth, 16.8 in height, and 31.1 in width align with common LV breaker footprints, facilitating quick commissioning and minimizing enclosure rework. For compatibility, verify panel bus ratings, trip unit settings, and mounting provisions before installation to ensure seamless integration with existing protection schemes.
Key ratings include rated uninterrupted current Iu of 5000 A and an interrupt rating of 100 kAIC, suitable for high-fault-current environments. It is a three-pole device with a PXR20 LSIG ARMS trip unit, enabling precise coordination and adjustable protection settings. The unit is UL Listed and CE marked, providing broad regulatory acceptance across global installations, while maintaining reliable performance under demanding industrial loads.
Yes. The PXR20 LSIG ARMS trip unit supports advanced protection coordination, enabling selective tripping and fault isolation. Its high Iu and 100 kAIC interrupt rating help maintain service continuity for critical loads in manufacturing lines and data centers. When paired with zone-selective interlocking resources and protection management software, it enhances reliability and minimizes unnecessary outages in multi-load architectures.
This breaker carries UL Listed and CE Marking, along with several third-party certifications (Lloyd’s Register, KEMA, ANSI, CSA, DNV GL, ABS) and NEMA/compliance references. Such certifications validate safety, performance, and interoperability across international standards, reducing procurement risk, simplifying audits, and enabling easier approval for global projects in regulated industries.
Magnum PXR units integrate with Eaton’s protection software and documentation, enabling centralized monitoring, quicker fault diagnosis, and streamlined maintenance planning. While initial cost may be higher than basic breakers, the lifecycle benefits include fewer nuisance trips, reduced downtime, lower spare-part inventories, and faster commissioning through standardized configurations. Together, these factors contribute to a lower total cost of ownership in capital-intensive facilities.