Eaton MPSC404MEAXX2S Magnum power circuit breaker - UL
Part Number: MPSC404MEAXX2S
Quick Summary
Eaton Magnum low voltage power circuit breaker protects large electrical installations with fast, reliable fault interruption. Engineers and maintenance teams often wrestle with downtime during module changes, motor starts, and coordinating protection across complex motor fleets. UL Listed, CSA Certified, and CE Marked, this unit meets major global standards and supports cross-border projects. With its four-pole design, 4000 A frame, 100 kA withstand, and drawout vertical mounting with motorized racking, it delivers robust protection for high-demand applications. The Power Xpert Release trip unit (PX R25) enables precise protection coordination, while seamless integration with protection management software improves reliability and reduces maintenance time. These features translate to lower downtime, fewer nuisance trips, and a safer, more productive electrical distribution system.
Product Information
Extended Description
MPSC404MEAXX2S Eaton: Eaton Magnum low voltage power circuit breaker, Magnum PXR, Double standard frame, 4000 A (NNABCABC), 100 kA, Four-pole, Drawout vertical with motorized racking mounting, PXR25 LSIGAM trip unit
Product Name
Eaton Magnum low voltage power circuit breaker
Catalog Number
MPSC404MEAXX2S
UPC
786689633318
Product Length/Depth
16.3 in
Product Height
16.8 in
Product Width
44.1 in
Product Weight
319 lb
Compliances
NEMA Compliant CCC Marked CE Marked SABA Listed
Certifications
ANSI CSA Certified UL Listed KEMA Certified Lloyd's Register Certified DNV GL Certified ABS 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
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 - MPSC404MEAXX2S
Eaton Specification Sheet - MPSC404MEAXX2S
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
Power Xpert Release trip unit PX R25 LSIGAM provides advanced protection logic, enabling precise selective coordination and faster fault clearing. Business impact: minimized nuisance trips, extended motor life, and improved system reliability in demanding production lines. Application: motor control centers and distribution panels in manufacturing or process industries. Drawout vertical mounting with motorized racking simplifies maintenance, reduces service time, and allows safe rack/unrack operations without unnecessary outages. Application: retrofit projects in brownfield facilities and new installations. Four-pole design with a 4000 A frame and 100 kA withstand delivers robust protection against high fault currents, enhancing equipment longevity. Application: heavy industry, metal processing, and chemical plants. Global compliance and certifications including UL Listed, CSA Certified, and CE Marked ensure procurement consistency across regions. Application: multinational projects and EPC bids. Space planning and installation efficiency are supported by the unit’s dimensions (16.3 in depth, 16.8 in height, 44.1 in width) and weight (319 lb). Application: panel design and retrofit planning. Integration with Power Xpert Protection Manager and other Eaton protection tools enables centralized monitoring, faster diagnostics, and scalable protection strategies. Application: modern factories pursuing digital protection and predictive maintenance.
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FAQs
The MPSC404MEAXX2S uses a standard Magnum four-pole frame with drawout vertical mounting and motorized racking, designed to drop into compatible low-voltage switchgear assemblies. Ensure rack alignment with bus bars, verify frame compatibility, and confirm the PX R25 trip unit is supported by your protection scheme. Check mounting rails and space clearance in the enclosure before installation.
Key specs are the 100 kA short-circuit withstand rating and the 4000 A frame capacity, along with four-pole construction. These factors enable reliable interruption during high-inrush and fault events. The PX R25 trip unit enhances coordination, reducing unnecessary trips and protecting downstream equipment in heavy-industry settings.
Yes. The Magnum MPSC404MEAXX2S supports selective coordination when paired with the Power Xpert Release trip unit. For extended coordination, reference the zone selective interlocking guidance and use compatible trip curves to align with upstream protection, ensuring selective tripping across buses while minimizing full-system outages.
The unit carries UL Listed, CSA Certified and CE Marked certifications, plus additional compliance like NEMA, SABA listings, and international certifications. This mix supports cross-border procurement, multi-region projects, and adherence to common electrical safety and performance standards.
The motorized racking reduces maintenance time by enabling safe, tool-assisted rack/unrack operations without full de-energization. When combined with the PX R25 protection, it improves uptime, reduces nuisance trips, and simplifies maintenance planning, contributing to lower total cost of ownership over the life of the installation.