Eaton MPS8503WEAXX2S Magnum power circuit breaker - UL
Part Number: MPS8503WEAXX2S
Quick Summary
Eaton Magnum low voltage power circuit breaker protects industrial electrical distribution in automation and heavy equipment. Engineers often face nuisance trips, downtime, and coordination gaps between protection devices, which drive maintenance costs and reliability concerns. It carries UL Listed, CE Marked, and SABA Listed certifications to support global compliance and risk reduction. Designed for high fault current environments, it offers a 5000 A Iu rating and 85 kAIC interrupt capability, with Power Xpert Release trip unit compatibility to optimize protection coordination and reduce total cost of ownership for plant-wide protection.
Product Information
Extended Description
MPS8503WEAXX2S Eaton: Eaton Magnum low voltage power circuit breaker, Magnum PXR, Double standard frame, 5000 A (ABCABC), 85 kA, Three-pole, Drawout vertical mounting, PXR25 LSIGAM trip unit
Product Name
Eaton Magnum low voltage power circuit breaker
Catalog Number
MPS8503WEAXX2S
UPC
786689635725
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
KEMA Certified Lloyd's Register Certified ANSI UL Listed CSA Certified ABS Certified DNV GL Certified
Frame
Double standard
Number of poles
Three-pole
Type
Magnum PXR
Frame
Double standard
Series
Magnum
Trip Type
PXR25 LSIG 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 x32 22.06 1
Power Xpert Protection Manager x32 22.06 1
Eaton Specification Sheet - MPS8503WEAXX2S
Eaton Specification Sheet - MPS8503WEAXX2S
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
The three-pole Magnum PXR breaker combines a double standard frame with drawout vertical mounting to enable quick, safe installation in existing switchgear and motor control centers, delivering improved installation efficiency and reduced service time. The 5000 A Iu rating and 85 kAIC interrupt capability translate into robust fault handling and minimized downstream damage, supporting higher system availability and reduced replacement costs in demanding industrial environments. Integration with the PXR25 LSIG ARMS trip unit enables precise protection coordination, Arc-Flash energy reduction, and safer operation across critical load segments. The unit’s broad certification portfolio (UL Listed, CE Marked, SABA Listed, NEMA Compliant, CCC Marked) helps facilitate global procurement and regulatory compliance, lowering compliance spend and procurement risk. Zone selective interlocking application notes and Magnum renewal parts ensure ongoing maintainability and long-term lifecycle support for power distribution schemes.
Get a Quick Quote for a Eaton MPS8503WEAXX2S
Chat with us on WhatsApp - fast responses guaranteed
Need to speak with someone? We'll call you back within 2 hours during business hours
Interested in Eaton MPS8503WEAXX2S?
Enquire Now
FAQs
Yes. The MPS8503WEAXX2S uses a drawout vertical mounting on the Magnum PXR frame, designed for three-pole, double-standard frame installations. It integrates with existing switchgear and motor control centers, enabling straightforward field retrofit or new panel builds without complex re-engineering. Ensure alignment with the Magnum frame and follow standard drawout procedures for safe removal and replacement.
The device is rated for a rated uninterrupted current (Iu) of 5000 A and an interrupt rating of 85 kAIC. These specs support protection of high‑current feeders and motors while maintaining short-circuit resilience. For coordination, pair with an appropriate LSIG ARM relay and verify system fault levels to optimize selectivity and minimize arc energy.
Ideal for industrial power distribution in automation and heavy equipment environments, including motor control centers (MCCs), switchgear assemblies, and critical process lines. Its three-pole configuration, drawout mounting, and Magnum PXR trip unit support complex protection schemes while maintaining high reliability in demanding plants such as manufacturing, metals, and chemicals.
This breaker is UL Listed and CE Marked, with additional certifications including SABA Listed, ANSI, CSA, ABS, DNV GL, KEMA and Lloyd's Register. These certifications confirm global acceptance, safety, and regulatory compliance across multiple regions, reducing procurement risk and accelerating international installations in multinational facilities.
Eaton provides Magnum renewal parts and a comprehensive user manual set, plus application papers for zone selective interlocking and protection coordination. Access to renewal parts extends equipment life and reduces downtime during servicing. Coupled with Power Xpert Release compatibility, you achieve improved protection coordination, lower maintenance costs, and a faster return on investment.