Eaton MPS8403WEAXX2F Magnum Breaker - UL Listed

MPS8403WEAXX2F
Manufacturer
Eaton
Part number
MPS8403WEAXX2F
Category

Quick Summary

Eaton Magnum low voltage power circuit breaker is a high-capacity protective device for industrial power distribution and critical infrastructure. Engineers often struggle with selective coordination, downtime, and arc-flash risk when expanding feeders or upgrading panels. This model carries UL Listed and CSA Certified marks, along with CE marking and NEMA compliance, ensuring broad regulatory alignment and safe field use. Built with a Power Xpert Release PXR20 trip unit and a drawout vertical mounting design, it simplifies commissioning and maintenance, while delivering predictable tripping behavior. In practice, this translates to faster MTTR, reduced spare parts inventory, and improved system uptime across manufacturing, energy, and process environments.

Product Information

Extended Description

MPS8403WEAXX2F Eaton: Eaton Magnum low voltage power circuit breaker, Magnum PXR, Double standard frame, 4000 A (ABCABC), 85 kA, Three-pole, Drawout vertical mounting, PXR20 LSIGAM trip unit
Product Name
Eaton Magnum low voltage power circuit breaker
Catalog Number
MPS8403WEAXX2F
UPC
786689628703
Product Length/Depth
16.3 in
Product Height
16.8 in
Product Width
31.1 in
Product Weight
237 lb
Compliances
CE Marked SABA Listed CCC Marked NEMA Compliant
Certifications
UL Listed CSA Certified Lloyd's Register Certified KEMA Certified ANSI 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 x64 22.6 1 Power Xpert Protection Manager x64 22.6 1 Eaton Specification Sheet - MPS8403WEAXX2F Eaton Specification Sheet - MPS8403WEAXX2F 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 capacity and scalable protection translate into real-world reliability for critical feeders and motors, reducing unplanned outages and equipment damage. The 4000 A frame with an 85 kA interrupt rating provides robust fault clearance for demanding industrial circuits, while the PXR20 LSIGAM trip unit enables precise coordination with upstream protection schemes. The drawout vertical mounting design improves serviceability, allowing rapid replacements and safer maintenance without extensive panel disassembly. Certifications including UL Listed, CSA Certified, CE Marked, and NEMA compliance ensure regulatory readiness for global deployments and cross-border projects, minimizing procurement friction. Compatibility with Eaton protection software supports remote monitoring and configuration via Power Xpert Protection Manager, delivering better asset visibility and preventative maintenance planning. The compact footprint and documented dimensions help in accurate panel layout, easing engineering and installation. Overall, this breaker supports safer operation, lower lifecycle costs, and streamlined commissioning in industrial power systems.

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FAQs

This unit uses a drawout vertical mounting configuration designed for standard low-voltage panels. When planning installation, accommodate room for the 16.3 in depth, 16.8 in height, and 31.1 in width footprint, plus clearances for line and load terminals and the trip unit access. Panel designers should verify adjacent feeders and module spacing to maintain safe working clearances during maintenance.
The PXR20 LSIGAM trip unit delivers adjustable protection curves and coordination logic with upstream devices, enabling selective tripping and arc-flash mitigation. It supports fast, predictable trip performance across multiple fault scenarios, improving system reliability and simplifying integration with Power Xpert Protection Manager for monitoring and configuration.
Yes. The MPS8403WEAXX2F is UL Listed and CSA Certified, with CE Marking and NEMA compliance documented in its specifications. This broad certification profile supports cross-border deployments, regulatory conformity, and safer operation in diverse industrial settings such as manufacturing floors, data centers, and process plants.
This three-pole, 4000 A frame breaker is ideal for main feeder protection and critical circuits in industrial power distribution. Applications include manufacturing lines, machine controls, and process facilities where high fault currents, reliable protection, and easy maintenance are essential. The drawout design further supports rapid replacements during scheduled maintenance or upgrades.
The combination of high interrupt capability, precise PXR20 protection, and drawout installation reduces downtime and maintenance time. Centralized monitoring via Power Xpert Protection Manager enables proactive maintenance planning, lower spare parts inventory, and extended asset life, delivering measurable ROI through improved uptime and safer, compliant operations.