Eaton MPSC403HEAXX2A Magnum LV Circuit Breaker - UL Listed

Part Number: MPSC403HEAXX2A
MPSC403HEAXX2A
Manufacturer
Eaton
Part number
MPSC403HEAXX2A
Category

Quick Summary

The Eaton Magnum low voltage power circuit breaker protects industrial electrical systems in demanding manufacturing environments. Facing nuisance trips and downtime, engineers rely on targeted trip units like PXR20 LSI to improve selectivity and uptime. It is UL Listed and CE Marked, with additional approvals from CSA, KEMA, and ABS. The fixed horizontal mounting and 4000 A frame support rapid installation in large panels and distributed systems. Designed for reliability in low voltage protection and power distribution, it supports selective coordination and reduces total cost of ownership. Value is amplified by compatibility with Magnum PXR release trip units and Power Xpert management for streamlined diagnostics.

Product Information

Extended Description

MPSC403HEAXX2A Eaton: Eaton Magnum low voltage power circuit breaker, Magnum PXR, Double standard frame, 4000 A (ABCABC), 100 kA, Three-pole, Fixed horizontal mounting, PXR20 LSI trip unit
Product Name
Eaton Magnum low voltage power circuit breaker
Catalog Number
MPSC403HEAXX2A
UPC
786689634247
Product Length/Depth
16.3 in
Product Height
16.8 in
Product Width
31.1 in
Product Weight
237 lb
Compliances
NEMA Compliant SABA Listed CCC Marked CE Marked
Certifications
ANSI Lloyd's Register Certified UL Listed CSA Certified KEMA 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 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 - MPSC403HEAXX2A Eaton Specification Sheet - MPSC403HEAXX2A 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: PXR20 LSI trip unit provides fast, accurate electronic protection for motor feeders. Business Impact: precise protection reduces nuisance trips and improves selective coordination, lowering downtime in high-load environments. Application: ideal for large motors and critical feeders in manufacturing and data centers, with built-in diagnostics that inform maintenance planning. Feature: Fixed horizontal mounting simplifies installation in compact panels. Business Impact: cuts field time, minimizes wiring errors, and supports modular, scalable panel designs. Application: retrofits and new builds alike, compatible with Magnum frames and standard enclosures, easing procurement and installation. Feature: 100 kA interrupting rating in a double standard frame provides robust protection. Business Impact: shields equipment from fault energy, reduces damage risk, and shortens outage durations. Application: ideal for large motor drives, HVAC systems, and continuous-process lines where fault energy is a design concern. Feature: Comprehensive certifications including UL Listed, CE Marked, CSA and KEMA ensure global acceptance. Business Impact: minimizes procurement risk in multinational projects and speeds compliance-led approvals. Application: suitable for international plants, offshore facilities, and projects requiring cross-border certification. Feature: Power Xpert Protection Manager and PXR compatibility enable centralized protection and diagnostics. Business Impact: enables remote monitoring, faster fault isolation, and streamlined maintenance planning, reducing total cost of ownership. Application: automation and process-control environments seeking integrated protection with IT-friendly data collection.

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FAQs

To ensure proper mounting, install the unit with fixed horizontal orientation in compliant enclosures designed for Magnum frames. Verify panel clearance for wiring access, maintain the specified footprint of 16.3 in depth, 16.8 in height, and 31.1 in width, and torque mounting hardware to manufacturer specifications. Use the PXR20 LSI trip unit for optimal protection and confirm compatibility with Power Xpert components for diagnostics.
The PXR20 LSI trip unit provides precise electronic protection with fast fault assessment, enabling selective coordination in motor feeders. This reduces nuisance trips, minimizes unplanned downtime, and supports proactive maintenance through built-in diagnostics. For large motors, this translates to longer motor life, lower repair costs, and improved process reliability.
The MPSC403HEAXX2A carries UL Listed and CE Marked certifications, along with CSA, KEMA, ABS, and other approvals. These certifications validate compliance with global safety and performance standards, reducing procurement risk in multinational projects and accelerating approvals in cross-border deployments. NEMA compliance and additional third-party confirmations further support project governance.
Follow the Magnum PXR maintenance guidelines, including periodic inspection of trip units, verification of mechanical operation, and reviewing diagnostic data from the PXR20 LSI. Schedule preventive maintenance in line with load profiles and environmental conditions, and utilize Power Xpert Protection Manager for remote monitoring to anticipate wear, minimize downtime, and optimize service intervals.
Industries with high motor loads and critical process lines, such as manufacturing, HVAC, data centers, and process industries, benefit most. The 100 kA interrupting rating, 4000 A frame, and robust certifications support large motor feeders and demanding power distribution panels, while the PXR20 LSI trip unit and Power Xpert compatibility enable centralized protection, diagnostics, and improved maintenance planning.