Eaton MPSC123HEAXX2A Magnum LV CB - UL Listed 100 kAIC

Part Number: MPSC123HEAXX2A
MPSC123HEAXX2A
Manufacturer
Eaton
Part number
MPSC123HEAXX2A
Category

Quick Summary

The Eaton Magnum low voltage power circuit breaker MPSC123HEAXX2A protects industrial power systems in distribution panels. Sizing, coordination, and trip reliability often complicate uptime and maintenance planning, especially in facilities with dense bus architectures. This unit carries UL Listed, CSA Certified, and CE Marking, with additional KEMA and Lloyd's Register attestations to support global deployment and compliance across diverse markets. The Magnum PXR20 LSI trip unit delivers precise current sensing, selective coordination, and fast fault isolation, while the three-pole, fixed-horizontal frame simplifies panel integration. With compatibility to Power Xpert Protection Manager, engineers gain real-time diagnostics and remote monitoring, translating to measurable reductions in mean time to repair and lower total cost of ownership across multi-site operations.

Product Information

Extended Description

MPSC123HEAXX2A Eaton: Eaton Magnum low voltage power circuit breaker, Magnum PXR, Standard frame, 1200 A, 100 kA, Three-pole, Fixed horizontal mounting, PXR20 LSI trip unit
Product Name
Eaton Magnum low voltage power circuit breaker
Catalog Number
MPSC123HEAXX2A
UPC
786689638023
Product Length/Depth
14.6 in
Product Height
16.8 in
Product Width
16.2 in
Product Weight
118 lb
Compliances
CCC Marked CE Marked SABA Listed NEMA Compliant
Certifications
KEMA Certified UL Listed CSA Certified Lloyd's Register Certified 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 - MPSC123HEAXX2A Eaton Specification Sheet - MPSC123HEAXX2A 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
Three-pole Magnum PXR frame with fixed horizontal mounting simplifies installation and reduces spare parts complexity, enabling faster commissioning in new builds and retrofits; combined with a standard frame it improves interchangeability across multi-site installations, delivering lower total cost of ownership. The 100 kAIC interrupt rating provides robust short-circuit protection, minimizing equipment damage during faults and reducing downtime in heavy-load environments such as manufacturing lines and data centers. The PXR20 LSI trip unit enhances protection coordination and fault isolation, enabling zone selective interlocking strategies that shorten outage durations and improve safety. UL Listed, CSA Certified, and CE Marked, along with additional global attestations, streamline procurement and cross-border compliance for international projects. Compatibility with Power Xpert Protection Manager supports remote monitoring and diagnostics, enabling proactive maintenance and optimized asset utilization. This combination addresses common objections related to lifecycle costs and integration complexity by delivering measurable reliability and efficiency gains.

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FAQs

For installation, use the standard Magnum PXR frame with fixed horizontal mounting to simplify panel integration. The unit is a three-pole design rated at 1200 A Iu with a 100 kAIC interrupt rating, supporting replacement in compatible standard frames. Ensure proper bus bar alignment and confirm mounting clearances per enclosure specifications to minimize commissioning time and ensure reliable fault clearance.
Key specs include three-pole operation, 1200 A rated uninterrupted current (Iu), and a 100 kAIC interrupt rating. The device uses the PXR20 LSI trip unit for protective relaying, within a standard Magnum frame. Dimensions are 14.6 in (L) × 16.8 in (H) × 16.2 in (W), with a weight of 118 lb, enabling consistent space planning in panel assemblies.
Yes. The PXR20 LSI trip unit supports precise coordination and fast fault isolation, enabling zone selective interlocking (ZSI) strategies. This reduces nuisance trips and cascading outages, particularly in motor-control centers and large distribution panels. When paired with a protective relaying strategy and Power Xpert Protection Manager, you can optimize coordination across multiple feeders for improved reliability.
The MPSC123HEAXX2A carries UL Listed, CSA Certified, and CE Marked certifications, with additional KEMA Certified and Lloyd's Register attestations noted. Compliances include CCC Marked and NEMA Conformance, supporting global deployments. These certifications help simplify procurement, reduce compliance risk, and enable consistent performance across international sites.
Using the Magnum with Power Xpert Protection Manager enables remote monitoring, fault diagnostics, and proactive maintenance planning, reducing mean time to repair and downtime. The three-pole, 1200 A unit’s reliability, extended service intervals, and compatibility with zone selective interlocking translate to lower lifecycle costs, improved asset utilization, and faster site-wide commissioning for multi-site operations.