Eaton MPSC203HEAXX2S Low Voltage Power Breaker - 100 kA
Part Number: MPSC203HEAXX2S
Quick Summary
The Eaton Magnum low voltage power circuit breaker is designed to protect critical electrical distribution in industrial facilities. For engineers confronting protection coordination gaps, uptime pressure, and regulatory audits, reliable protection with precise trip settings minimizes unplanned downtime. The unit carries UL Listed, CE Marked, and ANSI/CSA certifications, plus Lloyd's Register and other international approvals, ensuring broad market acceptance. Designed for Magnum PXR trip units in a standard-frame, three-pole package, it supports up to 2000 A Iu and a 100 kA interrupt rating, with straightforward installation and scalable protection architectures. Additionally, the fixed horizontal mounting and three-pole configuration simplify panel integration and maintenance planning.
Product Information
Extended Description
MPSC203HEAXX2S Eaton: Eaton Magnum low voltage power circuit breaker, Magnum PXR, Standard frame, 2000 A, 100 kA, Three-pole, Fixed horizontal mounting, PXR25 LSIGAM trip unit
Product Name
Eaton Magnum low voltage power circuit breaker
Catalog Number
MPSC203HEAXX2S
UPC
786689639310
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 CCC Marked CE Marked
Certifications
UL Listed Lloyd's Register Certified ANSI CSA Certified KEMA Certified ABS Certified DNV GL Certified
Frame
Standard
Number of poles
Three-pole
Type
Magnum PXR
Frame
Standard
Series
Magnum
Trip Type
PXR25 LSIG ARMS
Number of poles
Three-pole
Rated uninterrupted current (Iu)
2000 A
Interrupt rating
100 kAIC
Interrupt rating
100 kAIC
Rated uninterrupted current (Iu)
2000 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 x64 22.6 1
Power Xpert Protection Manager x64 22.6 1
Eaton Specification Sheet - MPSC203HEAXX2S
Eaton Specification Sheet - MPSC203HEAXX2S
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
High interrupt rating and large Iu capacity translate to robust motor feeder protection and reduced arc flash exposure, delivering measurable uptime gains and safer startup sequencing. The three-pole standard-frame design enables quick integration into existing panels, minimizing rework and spare-part requirements while supporting scalable protection schemes. The PXR25 LSIG ARMS trip unit provides precise coordination with upstream and downstream protection devices, improving selective tripping and system reliability in demanding applications such as large manufacturing lines and data centers. Rigorous certifications, including UL Listed, CSA/ANSI, and CE Marking, simplify regulatory approvals and cross-border deployment, reducing project risk. The Magnum PXR platform also aligns with the Power Xpert Protection Manager ecosystem, enabling centralized protection management, event logging, and streamlined maintenance workflows. Zone-selective interlocking considerations and published application papers offer added guidance for complex protection schemes, elevating overall system efficiency and safety. Compatibility with renewal parts and accessories helps extend lifecycle cost efficiency and maximize asset uptime.
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FAQs
This model uses a standard-frame, three-pole configuration with fixed horizontal mounting and a 14.6 in depth, 16.8 in height, and 16.2 in width. It fits typical Magnum PXR panels and compatible enclosures, simplifying bolt-in replacement and reducing panel rework. Always verify bus bar dimensions and mounting hardware before integrating into legacy systems.
With a 2000 A Iu rating and a 100 kAIC interrupt capability, this breaker handles high fault-current environments typical of large motor feeders. The PXR25 LSIG ARMS trip unit provides selective protection coordination, helping to isolate faults quickly without unnecessary trips, which improves motor uptime and reduces wear on upstream protection devices.
Yes. The unit is UL Listed and CE Marked, with ANSI CSA certifications and Lloyd's Register recognition, among others. NEMA compliance and additional third-party approvals further support global deployment, regulatory readiness, and safe operation in diverse markets.
The combination of high Iu and 100 kAIC ratings reduces unplanned outages and extends service life for critical feeders. Centralized protection management via Power Xpert Protection Manager enables simplified monitoring, faster fault diagnosis, and scheduled maintenance, contributing to lower total cost of ownership and improved asset availability over the lifecycle.
Technical resources include the Magnum PXR user manuals, configuration guides, and application papers such as zone selective interlocking guidance. You can also obtain the Power Xpert Protection Manager software and renewal parts catalogs to support system integration, programming, and ongoing protection strategy optimization.