Eaton MPS8403WEAXX2A Magnum low-voltage power circuit breaker - 85 kAIC

MPS8403WEAXX2A
Manufacturer
Eaton
Part number
MPS8403WEAXX2A
Category

Quick Summary

The Eaton Magnum low voltage power circuit breaker protects industrial power distribution by interrupting fault currents. Users often struggle with coordinating protection settings while minimizing downtime during retrofit projects. This unit carries UL Listed, CSA Certified, and CE Marked certifications, plus NEMA CCC compliance for global installations. With the Magnum PXR trip unit and a 4000 A Iu rating, it scales to large motor feeders while supporting future expansions. Coupled with Power Xpert Release trip options and easy drawout mounting, it delivers safer maintenance and lower lifecycle costs. This makes it a compelling choice for engineering teams seeking reliable protection with faster commissioning.

Product Information

Extended Description

MPS8403WEAXX2A Eaton: Eaton Magnum low voltage power circuit breaker, Magnum PXR, Double standard frame, 4000 A (ABCABC), 85 kA, Three-pole, Drawout vertical mounting, PXR20 LSI trip unit
Product Name
Eaton Magnum low voltage power circuit breaker
Catalog Number
MPS8403WEAXX2A
UPC
786689628284
Product Length/Depth
16.3 in
Product Height
16.8 in
Product Width
31.1 in
Product Weight
237 lb
Compliances
NEMA Compliant CCC Marked CE Marked SABA Listed
Certifications
CSA Certified ANSI UL Listed KEMA Certified Lloyd's Register Certified DNV GL Certified ABS Certified
Frame
Double standard
Number of poles
Three-pole
Type
Magnum PXR
Frame
Double standard
Series
Magnum
Trip Type
PXR20 LSI
Number of poles
Three-pole
Rated uninterrupted current (Iu)
4000 A
Interrupt rating
85 kAIC
Interrupt rating
85 kAIC
Rated uninterrupted current (Iu)
4000 A
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 - MPS8403WEAXX2A Eaton Specification Sheet - MPS8403WEAXX2A Magnum low-voltage power circuit breakers (ANSI and IEC) renewal parts and accessories Magnum PXR 20/25 electronic trip units time current curves Safer by design: arc energy reduction techniques Safer by design: arc energy reduction techniques Safer by design: arc energy reduction techniques
Feature: PXR20 LSI trip unit provides advanced protection coordination and arc energy management. Business Impact: Reduces arc flash exposure and minimizes unnecessary tripping, improving equipment longevity. Application: Suitable for complex motor drives and MCCs in chemical, oil & gas, and manufacturing environments. Feature: 4000 A rated uninterrupted current (Iu) supports high-load feeders without nuisance trips. Business Impact: Increases line uptime and lowers energy losses during peak demand periods. Application: Large manufacturing lines, conveyors, and process systems that demand sustained current. Feature: 85 kAIC interrupt rating delivers robust short-circuit protection. Business Impact: Enhances system reliability and protects downstream equipment during severe faults. Application: Heavy-duty distribution panels and critical power feeders in data centers and processing plants. Feature: Drawout vertical mounting with a double standard frame facilitates rapid replacement. Business Impact: Reduces commissioning time and retrofit downtime, lowering project costs. Application: Upgrading legacy switchgear and modernizing control panels. Feature: Comprehensive certifications and compliance (UL Listed, CSA Certified, CE Marked, NEMA CCC). Business Impact: Enables global deployment with regulatory confidence, simplifying procurement and installation. Application: Global facilities with varied national electrical codes. Feature: Extensive technical documentation and compatible trip-unit accessories support design optimization. Business Impact: Improves design accuracy, reduces change orders, and accelerates maintenance planning. Application: Engineering design, commissioning, and lifecycle management.

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FAQs

The MPS8403WEAXX2A uses a drawout vertical mounting design within a Magnum frame, facilitating straightforward replacement in compatible low-voltage switchgear and control panels. Before procurement, verify cabinet footprint, busbar connection layout, and spacer requirements, then align with the device’s double standard frame to ensure secure installation and seamless retrofits.
Key specs include a rated uninterrupted current (Iu) of 4000 A and an interrupt rating of 85 kAIC, with a three-pole configuration and the PXR20 LSI trip unit. These features support high-demand motor feeders and provide precise protection coordination for safe, reliable operation in demanding environments.
Yes. Its Magnum PXR features, along with 4000 A Iu and 85 kAIC, enable robust motor feeder protection and selective coordination. Its drawout design minimizes commissioning time during retrofits, while the LSI trip unit helps tailor protection curves to motor loads, reducing nuisance trips and downtime.
The MPS8403WEAXX2A carries UL Listed, CSA Certified, and CE Marked certifications, plus NEMA CCC compliance. This portfolio supports compliance across North American and international markets, reducing procurement risk and enabling multi-region deployment.
The drawout vertical mounting simplifies field replacement and reduces downtime, while the robust interrupt rating and high Iu rating enhance reliability and uptime. Access to comprehensive manuals and application notes accelerates commissioning and maintenance planning, delivering lower lifecycle costs and faster return on investment.