Eaton MPS8403WEAXX2Q Magnum Power Breaker - UL Listed

MPS8403WEAXX2Q
Manufacturer
Eaton
Part number
MPS8403WEAXX2Q
Category

Quick Summary

The Eaton Magnum low voltage power circuit breaker MPS8403WEAXX2Q delivers reliable protection for industrial power distribution. This model addresses common panel-level issues such as nuisance trips, poor selectivity, and costly downtime by combining a robust trip unit with precise coordination capabilities. It carries UL Listed and ANSI/CSA certification, along with CE marking, underscoring compliance across North American and international installations. Designed for drawout vertical mounting with a PXR25 LSIAM trip unit, it supports scalable protection for large feeders and switchgear assemblies. By aligning with Power Xpert Release trip units and industry standards, this breaker helps maintain uptime, improve maintenance planning, and reduce total cost of ownership in critical manufacturing and process environments.

Product Information

Extended Description

MPS8403WEAXX2Q Eaton: Eaton Magnum low voltage power circuit breaker, Magnum PXR, Double standard frame, 4000 A (ABCABC), 85 kA, Three-pole, Drawout vertical mounting, PXR25 LSIAM trip unit
Product Name
Eaton Magnum low voltage power circuit breaker
Catalog Number
MPS8403WEAXX2Q
UPC
786689628727
Product Length/Depth
16.3 in
Product Height
16.8 in
Product Width
31.1 in
Product Weight
237 lb
Compliances
CCC Marked NEMA Compliant CE Marked SABA Listed
Certifications
ANSI CSA Certified Lloyd's Register Certified KEMA Certified UL Listed 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 Power Xpert Release trip unit for Magnum PXR circuit breakers PXR 20/25 user manual Power Xpert Release trip unit for Magnum PXR circuit breakers PXR 20/25 user manual Power Xpert Release trip unit for Magnum PXR circuit breakers PXR 20/25 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 - MPS8403WEAXX2Q Eaton Specification Sheet - MPS8403WEAXX2Q 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 Magnum PXR trip unit provides adjustable protection with fast fault clearance, improving system reliability and reducing arc energy exposure in high-demand motor control centers. Application: large feeders and process lines where precise coordination minimizes downstream outages. Feature → Business Impact → Application: Drawout vertical mounting enables safe, rapid breaker replacement during maintenance, shortening downtime and boosting maintenance productivity. Application: retrofit or expansion projects in existing switchgear with limited installation windows. Feature → Business Impact → Application: 85 kA interrupting rating and 4000 A frame deliver robust short-circuit handling for demanding industrial networks, increasing install confidence and long-term protection. Application: heavy industry plants with high fault current potential. Feature → Business Impact → Application: PXR25 LSIAM trip unit enhances selectivity and diagnostic capability, aiding compliance with maintenance and safety standards. Application: OEM equipment, packaging lines, and water/wastewater facilities needing consistent protection. Feature → Business Impact → Application: Comprehensive certifications (UL Listed, ANSI CSA, CE Marked, NEMA Compliant) ensure global applicability and faster project approvals. Application: multinational facilities and projects with varied regulatory requirements. Feature → Business Impact → Application: Compatibility with Magnum family and zone-selective interlocking paper and guides simplifies engineering and reduces upgrade risk. Application: upgrade paths for aging MCCs while preserving existing coordination logic.

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FAQs

Install the three-pole device in a drawout vertical enclosure, ensuring proper alignment with the adjacent breakers. Connect the PXR25 LSIAM trip unit per the Magnum installation guide, verify conductor torque specs, and perform a manufacturer-recommended commissioning test. The unit supports standard coordination with Power Xpert protection Manager tools for streamlined start-up.
The MPS8403WEAXX2Q features an 85 kA interrupting rating and a 4000 A frame with a three-pole configuration. It uses the PXR25 LSIAM electronic trip unit for adjustable protection and precise fault detection, enabling fast clearance and improved selectivity across large feeders and motor drives.
Yes. The Magnum PXR-based breaker is designed for heavy-duty motor protection and high fault-current environments. Its drawout design and high interrupting capability support reliable motor control centers, while the PXR25 unit allows configuration aligned with motor inrush and coordination schemes for minimal nuisance trips.
This breaker is UL Listed and ANSI/CSA Certified, with CE marking and NEMA compliance noted. Additional certifications include various third-party approvals, ensuring global applicability and easier regulatory approvals for multinational installations.
Access toTime/Current curves and product documentation permits precise coordination and predictive maintenance. The Power Xpert Release compatibility simplifies upgrades, reduces downtime, and lowers total cost of ownership by enabling efficient fault analysis, faster servicing, and extended service intervals in critical manufacturing environments.