Eaton MPSC403WEAXX2H Magnum LV Power Circuit Breaker - UL Listed 100 kA

Part Number: MPSC403WEAXX2H
MPSC403WEAXX2H
Manufacturer
Eaton
Part number
MPSC403WEAXX2H
Category

Quick Summary

Eaton Magnum low voltage power circuit breaker protects industrial electrical systems across motor and panel applications. A common challenge is coordinating protection while meeting global standards and minimizing downtime during maintenance. This model carries UL Listed, CE Marked, and NEMA Compliant certifications to support worldwide deployment. With the Power Xpert Release PXR20 trip unit and a drawout vertical mounting design, it integrates quickly into new or retrofit panels. This combination delivers reliable short-circuit protection up to 100 kA and supports panel builders seeking scalable, standards-aligned solutions. Engineers gain clearer diagnostics, faster maintenance, and compliance confidence across multiple regions. Its robust frame and modular accessories also simplify upgrades and spare-part availability.

Product Information

Extended Description

MPSC403WEAXX2H Eaton: Eaton Magnum low voltage power circuit breaker, Magnum PXR, Double standard frame, 4000 A (ABCABC), 100 kA, Three-pole, Drawout vertical mounting, PXR20 LSIAM trip unit
Product Name
Eaton Magnum low voltage power circuit breaker
Catalog Number
MPSC403WEAXX2H
UPC
786689635206
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 SABA Listed NEMA Compliant
Certifications
CSA Certified Lloyd's Register Certified UL Listed ANSI KEMA Certified 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 - MPSC403WEAXX2H Eaton Specification Sheet - MPSC403WEAXX2H 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
The Power Xpert Release PXR20 LSIAM trip unit provides precise, coordinated protection with fast fault isolation and onboard diagnostics, reducing downtime and enabling selective tripping in complex power layouts. This feature translates into safer maintenance windows and improved equipment protection in motor control centers and panel boards. The business impact is measurable: fewer nuisance trips, easier fault tracing, and enhanced compliance with industrial safety standards. The drawout vertical mounting design supports rapid installation, safer isolation for maintenance personnel, and straightforward retrofit into existing switchgear, which minimizes project timelines and field labor costs. In practice, this means faster upgrades and predictable performance in upgrading legacy installations to modern protection schemes. The three-pole configuration with a 4000 A frame is ready for high-demand loads common in automation ecosystems.

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FAQs

The MPSC403WEAXX2H is equipped with the PXR20 LSIAM trip unit, enabling advanced protection coordination, adjustable protection curves, and integrated diagnostics. This compatibility simplifies upgrading existing Magnum assemblies and supports scalable protection schemes across new installations.
This model is a three-pole unit in a double standard frame with a 4000 A interrupt rating and a 100 kA short-circuit current rating (SCCR). It features drawout vertical mounting and is designed for high-demand industrial loads, ensuring reliable fault interruption and service continuity.
Yes. The drawout vertical mounting configuration is purpose-built for easy isolation during maintenance and swift replacement in panel boards, switchgear, and motor control centers, reducing downtime during retrofits or expansions.
The device carries UL Listed, CE Marked, and NEMA Compliant status, along with CSA, Lloyd's Register, ANSI, KEMA, ABS, and DNV GL certifications, supported by SABA listings and CCC in relevant regions, enabling multinational installations with confidence.
Engineers gain improved protection coordination, safer maintenance, faster fault isolation, and lower lifecycle costs due to modular accessories and robust spares availability. The combination of PXR20, strong SCCR, and global certifications translates into higher uptime and easier compliance across regional facilities.