Eaton MPS8404WEAXXSW Magnum low voltage power circuit breaker - UL Listed

MPS8404WEAXXSW
Manufacturer
Eaton
Part number
MPS8404WEAXXSW
Category

Quick Summary

Eaton Magnum low voltage power circuit breaker is designed to protect industrial power distribution panels from overcurrent events with reliable performance. This solution addresses downtime caused by nuisance trips and unplanned maintenance by delivering predictable, selectable protection. UL Listed, CSA Certified and ANSI/KEMA certifications underpin global compliance, helping you meet regulatory requirements across regions. By pairing robust fault interruption with a four-pole, drawout vertical mounting footprint, this breaker supports efficient cabinet layouts, easier serviceability, and improved lifecycle costs. For engineers and procurement teams, it translates to safer operations, faster replacements, and a straightforward path to standards alignment in mixed electrical environments.

Product Information

Extended Description

MPS8404WEAXXSW Eaton: Eaton Magnum low voltage power circuit breaker, Magnum PXR, Double standard frame, 4000 A (NNABCABC), 85 kA, Four-pole, Drawout vertical mounting, No trip unit
Product Name
Eaton Magnum low voltage power circuit breaker
Catalog Number
MPS8404WEAXXSW
UPC
786689628550
Product Length/Depth
16.3 in
Product Height
16.8 in
Product Width
44.1 in
Product Weight
319 lb
Compliances
NEMA Compliant CE Marked CCC Marked SABA Listed
Certifications
UL Listed CSA Certified ANSI 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 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 - MPS8404WEAXXSW Eaton Specification Sheet - MPS8404WEAXXSW Magnum low-voltage power circuit breakers (ANSI and IEC) renewal parts and accessories Magnum PXR 20/25 electronic trip units time current curves Cyber security white paper Cyber security white paper Cyber security white paper
Feature → Business Impact → Application: Four-pole, four-wire protection provides comprehensive phase and neutral protection, enabling precise coordination and reduced nuisance trips in complex distribution schemes; this improves uptime and reduces maintenance costs in manufacturing lines and data centers. Feature → Business Impact → Application: Drawout vertical mounting streamlines installation and pull-out maintenance, shortening downtime during routine inspections and facilitating retrofit projects in existing switchboards and control panels. Feature → Business Impact → Application: 4000 A fault current rating with 85 kA interrupt capacity delivers robust protection for high-demand loads and critical machinery, helping ensure safety and reliability in continuous-process industries such as metals, chemicals, and cement. Feature → Business Impact → Application: Global certifications including UL Listed, CSA Certified, and ANSI/KEMA enable cross-border deployment and supplier qualification, reducing compliance risk for multinational projects and panel builders. Feature → Business Impact → Application: No trip unit included by default but compatible with Magnum PXR release trip units, offering scalable selective coordination for future-proof expansion and upgrades in modern automation architectures. Feature → Business Impact → Application: Compact footprint and standard cataloging support easier stock management and faster procurement, lowering total cost of ownership for panel builders and end users in automotive, food & beverage, and energy facilities.

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FAQs

The MPS8404WEAXXSW uses a drawout vertical mounting design, which simplifies insertion and removal from switchgear, reduces installation time, and improves serviceability in existing panels. This configuration is particularly advantageous for retrofit projects and cabinets with limited accessibility, enabling safer and faster maintenance without compromising fault protection.
Yes. Although the base unit is delivered without a trip unit, it is compatible with Magnum PXR release trip units. This enables selective coordination and scalable protection schemes in larger systems, allowing you to tailor tripping characteristics to downstream protection and minimize unwanted outages in multi-tier architectures.
The MPS8404WEAXXSW carries UL Listed, CSA Certified, ANSI, KEMA Certified, Lloyd's Register Certified, DNV GL Certified, and ABS Certified markings. These certifications support compliance with North American and international electrical codes, facilitating procurement through approved supplier networks and ensuring reliability in diverse regulatory environments.
Key ratings include a 4000 A fault current rating and 85 kA interrupt capacity, suitable for high-demand industrial loads. Physical dimensions listed as 16.3 in depth, 16.8 in height, and 44.1 in width provide guidance for panel cutouts and space planning. The 319 lb weight indicates solid mechanical construction for durable field service.
Industrial plants with high current demands, strict uptime requirements, and panels requiring reliable drawout protection benefit most. Applications include manufacturing lines, process control racks, and large distribution panels where compliance with UL/CSA/ANSI and the need for robust coordination with optional PXR units drive lower downtime, easier maintenance, and more predictable protection against short-circuit events.