Eaton Magnum MPSC403MEAXXSW Low Voltage Power Circuit Breaker - UL Listed 100 kAIC

Part Number: MPSC403MEAXXSW
MPSC403MEAXXSW
Manufacturer
Eaton
Part number
MPSC403MEAXXSW
Category

Quick Summary

Eaton Magnum MPSC403MEAXXSW is a low voltage power circuit breaker for industrial power distribution. Maintenance teams often struggle with complex pull-out trips and lengthy panel downtime during replacements; this unit's drawout vertical mounting with motorized racking simplifies service while reducing exposure risk. It is CE marked, UL listed, and CSA certified, ensuring compliance across regional codes and customer audits. With a three-pole, double-standard frame and a 4000 A Iu / 100 kAIC rating, it delivers robust protection for demanding applications in switchgear and motor control centers. The design also aligns with Magnum PXR protection philosophy, supporting straightforward integration with existing protection schemes and predictable total cost of ownership for manufacturers and end users.

Product Information

Extended Description

MPSC403MEAXXSW Eaton: Eaton Magnum low voltage power circuit breaker, Magnum PXR, Double standard frame, 4000 A (ABCABC), 100 kA, Three-pole, Drawout vertical with motorized racking mounting, No trip unit
Product Name
Eaton Magnum low voltage power circuit breaker
Catalog Number
MPSC403MEAXXSW
UPC
786689634421
Product Length/Depth
16.3 in
Product Height
16.8 in
Product Width
31.1 in
Product Weight
237 lb
Compliances
CE Marked CCC Marked NEMA Compliant SABA Listed
Certifications
ANSI KEMA Certified Lloyd's Register Certified CSA Certified UL Listed ABS Certified DNV GL Certified
Frame
Double standard
Number of poles
Three-pole
Type
Magnum PXR
Frame
Double standard
Series
Magnum
Number of poles
Three-pole
Rated uninterrupted current (Iu)
4000 A
Interrupt rating
100 kAIC
Interrupt rating
100 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 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 - MPSC403MEAXXSW Eaton Specification Sheet - MPSC403MEAXXSW 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
Drawout vertical mounting with motorized racking reduces maintenance exposure and speeds device replacement, delivering safer sequence of operation and quicker fault isolation. This translates to safer maintenance procedures and faster swaps in live panels, especially in retrofit projects. Ideal for power distribution panels and motor control centers demanding frequent protection system updates. The unit’s 100 kAIC interrupt rating together with 4000 A Iu ensures reliable interruption under heavy fault currents, minimizing arc flash exposure and preserving system continuity during faults. Three-pole, double standard frame supports compatibility with existing Magnum PXR components and standard MCCB footprints, reducing installation time and spare parts complexity. Compliance and certifications—CE, UL, CSA—streamline procurement for international projects, supporting audits and regulatory reviews. Note that the model ships as a drawout device with no trip unit, allowing future field upgrades or integration with Magnum PXR protection workflows as systems evolve. In practice, this translates to scalable protection and lower total cost of ownership for facilities planning scalable protection upgrades.

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FAQs

This model is supplied without a trip unit (No trip unit). It can be paired with field-upgradable Magnum protection options later, and it integrates with the Magnum PXR protection framework for scalable, future-proof protection in MCCs and switchgear.
The MPSC403MEAXXSW features a rated uninterrupted current (Iu) of 4000 A and an interrupt rating of 100 kAIC, providing robust short-circuit protection for large motors and feeders in demanding industrial environments.
This unit carries CE marking, UL listing, and CSA certification, ensuring compliance across European and North American markets and simplifying project approvals and supplier audits.
Drawout vertical mounting with motorized racking enables quick, low-risk replacements without full panel removal, improves maintenance safety, reduces downtime, and accelerates retrofit or upgrade projects in busy industrial facilities.
It's ideal for large distribution panels, motor control centers, and retrofit projects in manufacturing and process industries that require high fault protection, easy maintenance, and compatibility with Magnum PXR protection strategies.