Eaton MPSC403WEAXX2C Magnum LV Power Breaker - UL Listed

Part Number: MPSC403WEAXX2C
MPSC403WEAXX2C
Manufacturer
Eaton
Part number
MPSC403WEAXX2C
Category

Quick Summary

Eaton Magnum low voltage power circuit breaker protects electrical systems in industrial automation and power distribution. When fault events strike, downtime and costly outages threaten production schedules, so reliable protection with predictable trip behavior is essential. The MPSC403WEAXX2C carries UL Listed and CSA Certified marks, CE marking, and broader global approvals (KEMA, Lloyd’s Register, ABS) to support multinational installations. Designed for drawout vertical mounting, it facilitates safe maintenance and quick replacement in live systems. The PXR20 LSIG trip unit enables precise protective coordination for complex motor and load schemes, while the 4000 A interrupt capacity and 100 kA short-circuit rating deliver robust protection for high-demand circuits. Compatibility with Power Xpert Protection Manager also supports remote monitoring and advanced protection strategies.

Product Information

Extended Description

MPSC403WEAXX2C Eaton: Eaton Magnum low voltage power circuit breaker, Magnum PXR, Double standard frame, 4000 A (ABCABC), 100 kA, Three-pole, Drawout vertical mounting, PXR20 LSIG trip unit
Product Name
Eaton Magnum low voltage power circuit breaker
Catalog Number
MPSC403WEAXX2C
UPC
786689635060
Product Length/Depth
16.3 in
Product Height
16.8 in
Product Width
31.1 in
Product Weight
237 lb
Compliances
SABA Listed CCC Marked NEMA Compliant CE Marked
Certifications
UL Listed CSA Certified KEMA Certified ANSI Lloyd's Register Certified 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 x32 22.06 1 Power Xpert Protection Manager x32 22.06 1 Eaton Specification Sheet - MPSC403WEAXX2C Eaton Specification Sheet - MPSC403WEAXX2C Magnum low-voltage power circuit breakers (ANSI and IEC) renewal parts and accessories Magnum PXR 20/25 electronic trip units time current curves Safer by design: arc energy reduction techniques Safer by design: arc energy reduction techniques Safer by design: arc energy reduction techniques
Feature: PXR20 LSIG trip unit provides nuanced protection curves and faster, more accurate fault detection. Business Impact: Improves selective coordination, reduces nuisance trips, and minimizes equipment damage in motor and process circuits. Application: Ideal for motor control centers and switchgear in manufacturing lines seeking reliable protection with diagnostic visibility. Long-tail keywords integrated: LSIG trip unit, selective coordination, motor protection, Power Xpert, protection diagnostics. Feature: 4000 A interrupt capacity (ABCABC) and 100 kA short-circuit rating. Business Impact: Handles high fault currents typical in large industrial feeders, reducing the risk of cascading outages. Application: Critical in mining, steel, and chemical processing plants with demanding fault levels. Long-tail keywords: high interrupt capacity, fault current rating, heavy industry protection. Feature: Drawout vertical mounting and three-pole design. Business Impact: Safer maintenance, easier hot-swap, and reduced downtime during routine servicing. Application: Panel boards and enclosures in automation environments. Long-tail keywords: drawout breaker, vertical mounting, three-pole breaker. Feature: Comprehensive certifications (UL Listed, CSA Certified, CE Marked, KEMA, Lloyd’s Register, ABS, DNV GL). Business Impact: Enables global deployments with regulatory assurance and accelerated project approvals. Application: Multinational facilities requiring cross-border compliance. Long-tail keywords: global approvals, regulatory compliance, cross-border deployment. Feature: Compatibility with Power Xpert Protection Manager. Business Impact: Enables remote monitoring, event logging, and streamlined protection management, lowering maintenance costs. Application: Modern data centers and industrial plants pursuing proactive protection strategies.

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FAQs

What you need to know: this model uses a drawout vertical mounting with a three-pole frame, facilitating safe hot-swapping and service while panels remain energized in many configurations. Ensure bus bar alignment, adequate clearance for the trip unit, and compatible enclosure space. Installers should reference Eaton manuals for wiring diagrams, torque specs, and maintenance intervals to optimize reliability and uptime.
The PXR20 LSIG trip unit provides advanced protection curves and accurate fault sensing, enabling selective coordination across feeder and branch circuits. This reduces nuisance trips on non-faulted sections and confines fault energy to the smallest possible area. For engineers, it simplifies coordination studies and helps meet safety and reliability targets in complex motor-driven systems.
Yes. With a 4000 A interrupt capacity and a 100 kA short-circuit rating, this breaker is designed for heavy-duty industrial applications where fault currents can be substantial. Proper coordination with upstream devices ensures the system remains protected without unnecessary outages, while the robust construction supports long service life in demanding facilities.
This model is UL Listed and CSA Certified, with CE Marking and additional international approvals (KEMA, Lloyd’s Register, ABS, DNV GL). These certifications validate safety, performance, and regulatory compliance across multiple regions, facilitating global deployment, reducing risk in multinational projects, and speeding procurement and commissioning in regulated industries.
ROI comes from improved uptime, reduced downtime during maintenance, and better protection coordination that minimizes collateral damage during faults. The LSIG trip unit and remote protection management via Power Xpert help shorten diagnostic cycles, lower energy losses, and extend equipment life, delivering measurable cost savings over the asset lifecycle.