Eaton MPSC123VEAXX2Q Magnum low voltage breaker - 100 kAIC
Part Number: MPSC123VEAXX2Q
Quick Summary
The Eaton Magnum low voltage power circuit breaker is a high-capacity protection device for industrial power distribution. It helps operators avoid nuisance trips by delivering precise, coordinated protection in demanding motor and feeder circuits. This unit carries critical certifications such as UL Listed, CE Marked, and CSA Certified, ensuring compliance across North American and international installations. The PXR25 LSI ARMS trip unit provides advanced protection features, while the standard frame and fixed vertical mounting simplify installation in existing switchgear. By combining robust current ratings with verified safety credentials, this breaker offers reliability, reduced downtime, and a clear path to scalable protection for growing facilities, all while aligning with Power Xpert ecosystem familiarity and global standards.
Product Information
Extended Description
MPSC123VEAXX2Q Eaton: Eaton Magnum low voltage power circuit breaker, Magnum PXR, Standard frame, 1200 A, 100 kA, Three-pole, Fixed vertical mounting, PXR25 LSIAM trip unit
Product Name
Eaton Magnum low voltage power circuit breaker
Catalog Number
MPSC123VEAXX2Q
UPC
786689638801
Product Length/Depth
14.6 in
Product Height
16.8 in
Product Width
16.2 in
Product Weight
118 lb
Compliances
NEMA Compliant CE Marked CCC Marked SABA Listed
Certifications
CSA Certified ANSI UL Listed KEMA Certified Lloyd's Register Certified DNV GL Certified ABS Certified
Frame
Standard
Number of poles
Three-pole
Type
Magnum PXR
Frame
Standard
Series
Magnum
Trip Type
PXR25 LSI ARMS
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
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 - MPSC123VEAXX2Q
Eaton Specification Sheet - MPSC123VEAXX2Q
Magnum low-voltage power circuit breakers (ANSI and IEC) renewal parts and accessories
Magnum PXR 20/25 electronic trip units time current curves
Cyber security white paper
Cyber security white paper
Cyber security white paper
Feature → Business Impact → Application: The Magnum PXR trip unit (LSI ARMS) enables zone-selective protection, improving selectivity and reducing arc energy exposure, which lowers maintenance costs and enhances safety on high-current lines in manufacturing and processing plants. This translates to fewer nuisance trips and shorter outage durations in critical tooling and conveyor systems. Feature → Business Impact → Application: A standard frame three-pole design rated for 1200 A Iu with a 100 kAIC interrupt rating provides robust main-distribution protection for large facilities, data centers, and campus installations, delivering reliable feeder protection and easier panel integration. Feature → Business Impact → Application: Fixed vertical mounting simplifies retrofit projects and field upgrades, reducing installation time and enclosure footprint in existing switchgear, MCCs, and power distribution centers. Feature → Business Impact → Application: UL Listed, CE Marked, and CSA Certified assurance supports regulatory compliance across facilities, enabling faster project approvals and smoother procurement. Feature → Business Impact → Application: Integration with Power Xpert Protection Manager and Power Xpert-enabled trip units ensures centralized protective coordination, better asset management, and straightforward commissioning in complex control schemes. Feature → Business Impact → Application: The unit’s dimensions and weight (14.6 in x 16.8 in x 16.2 in; 118 lb) support accurate enclosure planning and shipping logistics, reducing installation surprises and enabling precise space budgeting in new builds and retrofits. Feature → Business Impact → Application: Comprehensive documentation and access to application notes and manuals accelerate site training, troubleshooting, and long-term lifecycle support for maintenance teams, contractors, and original equipment manufacturers.
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FAQs
The MPSC123VEAXX2Q uses a standard Magnum PXR frame and fixed vertical mounting, designed for straightforward replacement or retrofit in existing three-pole panels. Confirm enclosure width, height, and depth to ensure proper clearance, then align mounting feet with chassis channels and secure with standard hardware. Use the PXR25 LSI ARMS trip unit for optimal coordination and verify wiring per the manufacturer’s installation guide to avoid false trips.
This unit is rated for 1200 A Iu with an interrupt rating of 100 kAIC and is a three-pole Magnum PXR device. It is designed for standard-frame applications and supports fixed mounting. These ratings enable robust main-distribution protection for high-current loads, while permitting precise timing and coordination with compatible protection schemes and trip units.
Yes. The breaker is UL Listed, CE Marked, and CSA Certified, providing compliance across North American and international installations. In addition to these, it adheres to NEMA compliance requirements and other listed certifications referenced in Eaton’s documentation, giving engineers confidence for cross-border projects and regulated environments.
Best suited for main feeders and feeder protection in industrial facilities such as manufacturing lines, data centers, and process plants. Its 1200 A Iu rating and 100 kAIC interrupt capacity support large motor drives and high-inrush loads, while the LSI ARMS trip unit enhances protection coordination and reduces the likelihood of cascading faults in complex power distribution schemes.
The unit has a depth of 14.6 inches, height of 16.8 inches, and width of 16.2 inches, with a shipping/handling weight of 118 pounds. This sizing supports planning for enclosure space, mounting clearances, and rack or panel installation, enabling accurate space budgeting and smoother project execution.