Eaton MPSC303WEAXX2A Low Voltage Power Breaker - UL Listed

Part Number: MPSC303WEAXX2A
MPSC303WEAXX2A
Manufacturer
Eaton
Part number
MPSC303WEAXX2A
Category

Quick Summary

Eaton Magnum low voltage power circuit breaker protects electrical systems from overloads in industrial switchgear and panels. Engineers and maintenance teams often grapple with nuisance trips, poor protection coordination, and time-consuming maintenance in critical automation environments. This unit is UL Listed, CE Marked, and NEMA compliant, ensuring regulatory acceptance across global projects. Integrated with Power Xpert Protection Manager and featuring the PXR20 LSI trip unit, it enables scalable protection, fast fault isolation, and easier asset management. For motor feeders and large distribution schemes, its three-pole, drawout vertical mounting supports reliable upgrade paths, reduced downtime, and a lower total cost of ownership.

Product Information

Extended Description

MPSC303WEAXX2A Eaton: Eaton Magnum low voltage power circuit breaker, Magnum PXR, Standard frame, 3000 A, 100 kA, Three-pole, Drawout vertical mounting, PXR20 LSI trip unit
Product Name
Eaton Magnum low voltage power circuit breaker
Catalog Number
MPSC303WEAXX2A
UPC
786689636739
Product Length/Depth
14.6 in
Product Height
16.8 in
Product Width
16.2 in
Product Weight
118 lb
Compliances
CE Marked CCC Marked SABA Listed NEMA Compliant
Certifications
CSA Certified Lloyd's Register Certified ANSI 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 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 - MPSC303WEAXX2A Eaton Specification Sheet - MPSC303WEAXX2A 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
Feature: PXR20 LSI trip unit provides advanced protection logic with arc energy reduction. Business Impact: improves selectivity and reduces nuisance trips, lowering maintenance costs. Application: ideal for distribution panels and MCCs where precise protection is critical. Feature: Drawout vertical mounting simplifies installation and maintenance. Business Impact: speeds commissioning, minimizes downtime during replacements, and reduces labor costs. Application: suitable for retrofit projects and retrofit-ready switchgear in evolving factories. Feature: 3000 A frame with 100 kA Icu rating supports high-demand loads. Business Impact: enables safe protection of large motors and feeders, lowering the risk of cascading failures. Application: heavy industrial environments and power-intensive processes. Feature: Three-pole construction aligns with standard three-phase systems. Business Impact: simplifies wiring and coordination with existing panels, improving protection reliability. Application: motor control centers, switchgear banks, and plant-wide distribution. Feature: UL Listed, CE Marked, and NEMA compliant certifications. Business Impact: ensures regulatory acceptance, easier project approvals, and international deployment. Application: global facilities with strict safety and compliance requirements. Feature: Power Xpert Protection Manager compatibility enables centralized protection management. Business Impact: accelerates fault analysis, streamlines upgrades, and supports scalable protection strategies. Application: enterprise-level automation projects with multi-site protection needs.

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FAQs

Install as a three-pole device with vertical drawout mounting in a compatible panel. Follow Eaton installation guides, ensure conductor torque and wiring conform to standards, and verify correct alignment with the PXR20 LSI trip unit settings before commissioning.
The breaker is rated for 3000 A frame with a 100 kA short-circuit current rating (Icu), three-pole configuration, and utilizes a Power Xpert Release (PXR20) LSI trip unit for precise protection and selective coordination.
Yes. Its three-pole design, high Icu rating, and PXR20 LSI protection support motor feeders and MCCs, enabling fast fault isolation and reliable coordination within complex distribution schemes.
It is UL Listed and CE Marked, with additional certifications including NEMA compliance, CCC Mark, and various third-party validations (CSA, Lloyd’s Register, ANSI, KEMA, ABS, DNV GL). This supports global project approvals.
Protection management through Power Xpert reduces downtime, speeds fault diagnosis, and simplifies firmware/software updates, delivering lower maintenance costs and improved asset availability over the system’s life.