Eaton MPSC503MEAXX2A Magnum LV Circuit Breaker - 100 kAIC

Part Number: MPSC503MEAXX2A
MPSC503MEAXX2A
Manufacturer
Eaton
Part number
MPSC503MEAXX2A
Category

Quick Summary

Eaton Magnum low voltage power circuit breaker is designed to protect distribution systems and motor circuits in industrial facilities. Plant operators face downtime and rising maintenance costs from nuisance trips, miscoordination, and difficult maintenance access. This unit carries UL Listed, CE Marked, CSA Certified, and Lloyd’s Register verification to support global compliance and safety requirements. Built around Magnum PXR with a Power Xpert Release trip unit and a motorized racking drawout, it enables fast service, precise coordination, and seamless integration with protection-management workflows. The combination of a double standard frame, three-pole design, and 5000 A Iu rating translates to high reliability and scalable protection in demanding electrical distributions.

Product Information

Extended Description

MPSC503MEAXX2A Eaton: Eaton Magnum low voltage power circuit breaker, Magnum PXR, Double standard frame, 5000 A (ABCABC), 100 kA, Three-pole, Drawout vertical with motorized racking mounting, PXR20 LSI trip unit
Product Name
Eaton Magnum low voltage power circuit breaker
Catalog Number
MPSC503MEAXX2A
UPC
786689635275
Product Length/Depth
16.3 in
Product Height
16.8 in
Product Width
31.1 in
Product Weight
237 lb
Compliances
SABA Listed NEMA Compliant CE Marked CCC Marked
Certifications
Lloyd's Register Certified ANSI UL Listed CSA Certified KEMA Certified ABS Certified DNV GL Certified
Frame
Double standard
Number of poles
Three-pole
Type
Magnum PXR
Frame
Double standard
Series
Magnum
Trip Type
PXR20 LSI
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 - MPSC503MEAXX2A Eaton Specification Sheet - MPSC503MEAXX2A 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 PXR20 LSI trip unit delivers adaptive protection logic for selective coordination, reducing arc-flash exposure and unneeded outages while maintaining fast fault clearance. This directly lowers maintenance costs and downtime in motor-heavy facilities, where precise protection is critical for uptime and safety. The drawout vertical with motorized racking mounting simplifies servicing, enabling safe, swift removal and replacement without extended power interruption. Compatibility with standard Magnum frames supports quick retrofits and minimizes spare parts inventory for installers and maintenance teams. Power Xpert Protection Manager integration provides centralized monitoring, event logging, and remote protection management, enabling faster fault diagnosis and proactive maintenance planning. A robust double standard frame and three-pole design streamline installation in existing switchgear and MCCs, while the 5000 A Iu and 100 kAIC ratings deliver reliable performance under demanding short-circuit conditions. Compliances and certifications, including UL, CE, CSA, and Lloyd’s Register, reduce regulatory risk for global deployments. Overall, this breaker supports scalable protection strategies for industrial power distribution with predictable total cost of ownership.

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FAQs

The MPSC503MEAXX2A uses a standard Magnum PXR drawout design, compatible with existing Magnum frames and MCCs. Installation steps include aligning the drawout with the vertical mounting rails, connecting the motorized racking control, and integrating the PXR trip unit with Power Xpert Protection Manager for monitoring. Ensure proper torque on lugs and verify clearance for safe operation during racking.
The PXR20 LSI trip unit provides advanced protection logic with low- Short-Circuit Impedance (LSI) sensitivity, enabling selective coordination and fast fault isolation. This reduces unnecessary tripping, improves uptime, and helps meet arc-flash safety objectives in facilities with heavy motor loads and complex feeders.
Yes. With three poles, a double standard frame, and a 5000 A Iu rating plus 100 kAIC interrupt capacity, the MPSC503MEAXX2A is well-suited for motor control centers in demanding industrial environments. Its motorized racking facilitates maintenance, while PXR trip technology supports precise motor protection and coordination within MCCs.
The device carries UL Listed, ANSI, CSA Certified, CE Marked, Lloyd’s Register Certified, and other third-party verifications, along with SABA/NEMA compliances. These certifications help satisfy global procurement rules, audits, and cross-border deployments in manufacturing, energy, and process industries.
Expect reduced maintenance labor and faster service due to motorized racking and easy drawout removal, improving mean time to repair (MTTR). The selective protection of PXR reduces nuisance trips, while the centralized data from Protection Manager supports predictive maintenance and longer asset life, delivering a favorable total cost of ownership over time.