Eaton MPSC403WEAXX2A Magnum LV Circuit Breaker - UL 100 kA

Part Number: MPSC403WEAXX2A
MPSC403WEAXX2A
Manufacturer
Eaton
Part number
MPSC403WEAXX2A
Category

Quick Summary

Eaton Magnum low voltage power circuit breaker provides reliable overcurrent protection for motor and distribution panels in industrial facilities. Sizing, coordination, and trip-unit selection can be a major project bottleneck, slowing panel builds and complicating maintenance schedules. This MPSC403WEAXX2A model combines a three-pole drawout design with a Power Xpert Release PXR20 LSI trip unit, delivering precise fault isolation while supporting selective coordination. It carries UL Listed and CE Mark certifications, along with Lloyd's Register and ANSI attestations, which help you meet global compliance requirements. With a double standard frame and a robust 100 kA interrupting capability, it scales across mid- to large-size panels. Use it to improve mean time between outages and streamline preventive maintenance in automation-rich facilities.

Product Information

Extended Description

MPSC403WEAXX2A Eaton: Eaton Magnum low voltage power circuit breaker, Magnum PXR, Double standard frame, 4000 A (ABCABC), 100 kA, Three-pole, Drawout vertical mounting, PXR20 LSI trip unit
Product Name
Eaton Magnum low voltage power circuit breaker
Catalog Number
MPSC403WEAXX2A
UPC
786689635053
Product Length/Depth
16.3 in
Product Height
16.8 in
Product Width
31.1 in
Product Weight
237 lb
Compliances
CE Marked SABA Listed NEMA Compliant CCC Marked
Certifications
Lloyd's Register Certified ANSI UL Listed CSA Certified KEMA Certified ABS Certified DNV GL Certified
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 - MPSC403WEAXX2A Eaton Specification Sheet - MPSC403WEAXX2A 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: The PXR20 LSI trip unit enables precise fault isolation, reducing nuisance trips and enabling tighter coordination across motor control panels, which translates to higher uptime in manufacturing lines and improved machine availability. This supports safer commissioning and faster troubleshooting in automated systems that rely on consistent protection schemes. Feature → Business Impact → Application: A 100 kA interrupting rating provides robust fault withstand capability, protecting downstream equipment such as drives and transformers from high-energy faults and minimizing unplanned outages in high-demand production environments. Feature → Business Impact → Application: Drawout vertical mounting and a three-pole configuration simplify retrofits and new panel builds, enabling straightforward installation in existing switchgear and new machine rooms with standardized footprints. Feature → Business Impact → Application: The Magnum double standard frame, combined with a PXR-based protection strategy, reduces spare-parts inventory and extends service life, delivering lower total cost of ownership in long-cycle industrial projects. Feature → Business Impact → Application: Comprehensive certifications (UL Listed, CE Marked, Lloyd's Register, ANSI, CSA, KEMA, ABS, DNV GL) ensure regulatory compliance across global sites, streamlining cross-border procurement and supplier qualification for multinational projects. Feature → Business Impact → Application: Access to Zone Selective Interlocking (ZSI) resources and Power Xpert Protection Manager compatibility supports modern automation architectures, enabling remote monitoring, faster fault isolation, and predictive maintenance in plant-wide digitalization initiatives.

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FAQs

Yes. The MPSC403WEAXX2A uses the PXR20 LSI trip unit within the Magnum family and adopts a drawout vertical mounting arrangement that aligns with standard Magnum frames. It fits common low-voltage panel architectures and adapts to existing power distribution schemes without major panel redesigns, reducing retrofit risk.
Key specs include a three-pole configuration, 100 kA interrupting capacity, and a 4000 A frame reference in the Magnum line. It features the PXR20 LSI trip unit for selective coordination and fault isolation, with a catalog number MPSC403WEAXX2A and 16.3 in depth, 16.8 in height, and 31.1 in width.
Yes. The Magnum PXR family supports advanced protection strategies, and Eaton provides zone selective interlocking resources for ZSI-enabled systems. This makes the MPSC403WEAXX2A well-suited for complex motor control centers and critical process lines where selective tripping improves reliability and reduces arc energy.
The product is UL Listed and CE Marked, with additional certifications from Lloyd's Register, ANSI, CSA, KEMA, ABS, and DNV GL. These certifications support multi-region acceptance, supplier qualification, and regulatory compliance for global installations.
The PXR20 LSI trip unit enables precise protection with fewer unnecessary trips, reducing wear on motors and drives. Remote monitoring via compatible Power Xpert software supports predictive maintenance, potentially lowering downtime costs and extending service life—driving a favorable return on investment over the equipment's life cycle.