Eaton MPS8403WEAXXSW Magnum low voltage power circuit breaker - UL Listed

MPS8403WEAXXSW
Manufacturer
Eaton
Part number
MPS8403WEAXXSW
Category

Quick Summary

Eaton Magnum low voltage power circuit breaker MPS8403WEAXXSW protects electrical distribution by interrupting fault currents in industrial panels. Too often downtime is caused by nuisance trips or miscoordination with downstream devices, leading to outages and higher maintenance costs. Certified UL Listed, CE Marked, and CSA Certified, this unit supports compliant installations across regions. Designed for drawout vertical mounting in three-pole assemblies, it delivers reliable protection with compatibility for Power Xpert Release trip units to reduce downtime and optimize maintenance budgets.

Product Information

Extended Description

MPS8403WEAXXSW Eaton: Eaton Magnum low voltage power circuit breaker, Magnum PXR, Double standard frame, 4000 A (ABCABC), 85 kA, Three-pole, Drawout vertical mounting, No trip unit
Product Name
Eaton Magnum low voltage power circuit breaker
Catalog Number
MPS8403WEAXXSW
UPC
786689628277
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
ANSI Lloyd's Register Certified CSA 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 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 - MPS8403WEAXXSW Eaton Specification Sheet - MPS8403WEAXXSW 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: Drawout vertical mounting for quick, safe installation and easy field maintenance → Business Impact: Reduces commissioning time and minimizes panel disruption during replacements and upgrades → Application: Ideal for large switchgear and machine control panels. Feature: Three-pole frame with 4000 A short-circuit rating (ABCABC) and 85 kA interrupting capacity → Business Impact: Ensures robust fault protection for high-demand feeders, lowering the risk of cascading outages → Application: Main feeders in process plants and industrial facilities. Feature: Compatibility with Power Xpert Release trip units and zone selective interlocking applications → Business Impact: Flexible protection strategy and improved selective coordination, reducing nuisance trips and energy waste → Application: Retrofit paths for existing installations and new builds. Feature: Broad compliance footprint including CE Marked, SABA Listed, NEMA Compliant, CCC Marked, UL Listed, CSA/KEMA/DNV GL/ABS certifications → Business Impact: Global deployment with minimized regulatory risk and faster project approvals → Application: Multinational manufacturing, data centers, and automation environments. Feature: Large footprint with substantial dimensions and weight (16.3 in L, 16.8 in H, 31.1 in W, 237 lb) → Business Impact: Solid, durable protection for demanding industrial contexts and long service life → Application: Heavy-duty breakers in drawout panels and power distribution centers.

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FAQs

The MPS8403WEAXXSW uses drawout vertical mounting and is a three-pole unit designed for easy insertion and removal in larger switchgear. Its base-frame approach accommodates field upgrades to Power Xpert Release trip units, enabling flexible protection schemes while simplifying panel wiring and maintenance. This design supports safe servicing, improved alignment with downstream devices, and straightforward retrofits in existing panels.
This model features a three-pole configuration with a 4000 A short-circuit current rating (ABCABC) and an 85 kA interrupting capacity. Such ratings support robust protection for high-demand feeders and critical loads in industrial environments, reducing the likelihood of damaging fault currents and enabling selective coordination with downstream protection devices.
Yes. The Magnum PXR family, when paired with appropriate release trip units, supports selective coordination strategies. This base unit can be integrated with Power Xpert Release trips and, together with zone selective interlocking documentation, helps align upstream and downstream protection, minimize nuisance trips, and optimize downtime. Refer to the selective coordination application paper IA0120000E3 for guidance.
The unit carries UL Listed, CE Marked, and CSA Certified protections, with additional certifications including ANSI, Lloyd's Register, KEMA, ABS, and DNV GL. It is also listed for SABA and NEMA compliance, CCC Marked, ensuring global applicability across North American and international installations and helping with regulatory approvals in multinational projects.
The drawout vertical design, compatibility with field-installable trip units, and broad certification coverage reduce commissioning time and regulatory risk, while enabling easier maintenance and faster fault isolation. These factors collectively lower downtime, extend equipment life, and improve overall asset uptime, contributing to a favorable total cost of ownership for industrial power protection systems.