Eaton MPSC4A4WEAXX2A Magnum Breaker - PXR20 LSI Trip
Part Number: MPSC4A4WEAXX2A
Quick Summary
The Eaton Magnum low voltage power circuit breaker protects industrial panels and motor circuits with precise, configurable protection. Engineers often wrestle with coordination, nuisance trips, and downtime; this model delivers selective protection via the PXR20 LSI trip and convenient drawout vertical mounting for rapid, safe maintenance in crowded switchgear. It carries NEMA compliance and CE marking, UL listing, and Lloyd's Register certification, ensuring global acceptance and safer field deployment across industries such as manufacturing and data centers. For facilities relying on robust power distribution, it delivers reliability, easier upgrades with Power Xpert Protection Manager compatibility, scalable protection schemes, and a path to future expansion while reducing total cost of ownership.
Product Information
Extended Description
MPSC4A4WEAXX2A Eaton: Eaton Magnum low voltage power circuit breaker, Magnum PXR, Double standard frame, 4000 A (NABCNABC), 100 kA, Four-pole, Drawout vertical mounting, PXR20 LSI trip unit
Product Name
Eaton Magnum low voltage power circuit breaker
Catalog Number
MPSC4A4WEAXX2A
UPC
786689634773
Product Length/Depth
16.3 in
Product Height
16.8 in
Product Width
44.1 in
Product Weight
319 lb
Compliances
NEMA Compliant SABA Listed CCC Marked CE Marked
Certifications
Lloyd's Register Certified ANSI UL Listed KEMA Certified CSA 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 - MPSC4A4WEAXX2A
Eaton Specification Sheet - MPSC4A4WEAXX2A
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 provides precise protection coordination by continuously evaluating circuit conditions and delivering selective tripping. This reduces nuisance trips, shortens fault-clearance times, and improves overall uptime in critical processes such as extrusion lines and CNC operations. Application: motor control centers and heavy industry panels benefit from tighter protection coordination with minimal service interruptions. Feature → Business Impact → Application: Drawout vertical mounting enables quick breaker removal and safe maintenance, reducing installation downtime and field risk in crowded switchgear environments. Application: retrofit projects and new builds where space is at a premium. Feature → Business Impact → Application: Four-pole construction with a 4000 A frame and 100 kA withstand rating handles high fault currents and large-capacity loads, delivering robust protection for data centers, stamping presses, and continuous manufacturing lines. Feature → Business Impact → Application: Compliance across global markets is reinforced by NEMA, CE, and UL certifications plus Lloyd’s Register; this simplifies procurement, lowers audit friction, and supports cross-border projects in regulated industries. Feature → Business Impact → Application: Power Xpert Protection Manager compatibility enables centralized protection management, firmware updates, and streamlined device coordination for modern plant control systems. Application: facilities seeking unified protection strategy and easier asset management. Feature → Business Impact → Application: Comprehensive downloads and documentation accelerate design validation, commissioning, and ongoing maintenance, reducing risk during integration and upgrades.
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FAQs
Installation should follow the official Eaton installation guide. Verify the unit is compatible with the panel, ensure the vertical drawout mechanism is clean and aligned, connect with the correct bus bars, and secure the four-pole terminals per torque specifications. After mounting, configure the PXR20 LSI trip settings and verify mechanical interlocks, then perform a functional test with appropriate PPE and lockout/tagout procedures.
The MPSC4A4WEAXX2A is built for high fault currents with a four-pole, 4000 A frame and a 100 kA short-circuit withstand rating. This combination supports heavy-duty industrial distribution, enabling rapid interruption during high-mault fault events while protecting downstream equipment and reducing arc-flash exposure in demanding environments.
Yes. The Magnum MPSC4A4WEAXX2A carries UL Listed and CE Marked certifications, along with NEMA compliance. It is also listed by multiple additional bodies (Lloyd's Register, CSA, KEMA, DNV GL, ABS) to support global installations and regulatory compliance across industries and regions.
Yes. The MPSC4A4WEAXX2A is compatible with Power Xpert Protection Manager, enabling centralized protection management, trip-unit configuration, and firmware updates. This integration simplifies device coordination across the plant and speeds commissioning, maintenance, and audits in modern digitalized electrical systems.
Plan for drawout vertical mounting with a footprint consistent with the panel width of 44.1 in, height of 16.8 in, and depth of 16.3 in, as specified. Ensure sufficient clearance for safe operations, wiring space for four poles, and accessibility for maintenance. Verify weight implications (approximately 319 lb) and confirm room for service clearance around the breaker during testing.