Eaton MPSC123MEAXX2A Magnum LV Breaker - 100 kAIC UL Listed
Part Number: MPSC123MEAXX2A
Quick Summary
Eaton Magnum MPSC123MEAXX2A is a low voltage power circuit breaker for protecting large industrial power systems. It helps prevent nuisance trips and downtime caused by short circuits and overloads in critical motor and feeder circuits. UL Listed, CE Marked, and CSA Certified provide confidence across North American and international markets. This unit integrates with Power Xpert Protection Manager and PXR20 LSI trip unit for advanced coordination and monitoring. With a standard Magnum frame, three poles, and a 1200 A Iu rating, it supports scalable protection in panelboards and switchgear.
Product Information
Extended Description
MPSC123MEAXX2A Eaton: Eaton Magnum low voltage power circuit breaker, Magnum PXR, Standard frame, 1200 A, 100 kA, Three-pole, Drawout vertical with motorized racking mounting, PXR20 LSI trip unit
Product Name
Eaton Magnum low voltage power circuit breaker
Catalog Number
MPSC123MEAXX2A
UPC
786689638337
Product Length/Depth
14.6 in
Product Height
16.8 in
Product Width
16.2 in
Product Weight
118 lb
Compliances
SABA Listed NEMA Compliant CE Marked CCC Marked
Certifications
KEMA Certified CSA Certified Lloyd's Register Certified UL Listed ANSI ABS Certified DNV GL Certified
Frame
Standard
Number of poles
Three-pole
Type
Magnum PXR
Frame
Standard
Series
Magnum
Trip Type
PXR20 LSI
Number of poles
Three-pole
Rated uninterrupted current (Iu)
1200 A
Interrupt rating
100 kAIC
Interrupt rating
100 kAIC
Rated uninterrupted current (Iu)
1200 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 - MPSC123MEAXX2A
Eaton Specification Sheet - MPSC123MEAXX2A
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: Drawout vertical with motorized racking mounting. Business impact: Accelerates installation and maintenance tasks, reducing downtime and labor costs while improving fault isolation procedures. Application: Ideal for retrofit panels and new switchgear that require quick, safe insert-and-rack operations in demanding environments. Feature: PXR20 LSI trip unit. Business impact: Delivers precise, zone-selective protection with fast clearance and improved coordination, reducing arc energy exposure and downstream damage. Application: Suitable for a wide range of motor drives and feeders in manufacturing lines and process plants. Feature: 1200 A Iu rated continuous current. Business impact: Supports high-load feeders and large distribution sections without compromising protection accuracy, enabling higher system uptime. Application: Centralized power distribution, OEM panel builds, and heavy-duty MCCs. Feature: 100 kAIC interrupt rating. Business impact: Enables safe interruption of high fault currents, meeting rigorous utility and industrial standards while minimizing equipment stress. Application: Main or feeder protection in large electrical rooms and data-center environments. Feature: Standard three-pole frame. Business impact: Ensures straightforward integration with existing buses and mounting enclosures, reducing rework and installation risk. Application: Commonly used in switchgear assemblies, motor control centers, and distribution boards. Feature: Broad certifications and compliance. Business impact: Supports global deployment with regulatory assurance (UL, CE, CSA, KEMA/LR, etc.), simplifying cross-border procurement. Application: Global manufacturing facilities, mining, and steel processing where regulatory adherence matters.
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FAQs
The MPSC123MEAXX2A uses the Magnum standard frame and is designed for drawout vertical mounting with motorized racking. This ensures straightforward drop-in replacement in existing MCCs and switchgear, minimizes bus work, and reduces installation risk during upgrades or new builds.
Key specs include a rated uninterrupted current (Iu) of 1200 A and an interrupt rating of 100 kAIC. These values support high-load feeders and large distribution sections, enabling reliable protection for motors and critical feeders without nuisance tripping.
This breaker is UL Listed, CE Marked, and CSA Certified, with additional approvals such as KEMA/LR certifications. These credentials support global deployment, cross-border procurement, and compliance with major regional requirements in North America and Europe.
The PXR20 LSI trip unit provides advanced protection coordination, zone selective interlocking, and precise tripping curves. This reduces arc energy exposure, limits downstream fault impact, and enhances overall system uptime in demanding environments like manufacturing and processing plants.
Yes. With three poles, a standard frame, motorized racking, and a 1200 A Iu rating, it is well-suited for MCCs and large distribution panels. Its robust interrupt rating and compatibility with Power Xpert Protection Manager support reliable protection, monitoring, and easy integration into evolving power architectures.