Eaton MPSC403WEAXXSW Magnum low-voltage circuit breaker-UL

Part Number: MPSC403WEAXXSW
MPSC403WEAXXSW
Manufacturer
Eaton
Part number
MPSC403WEAXXSW
Category

Quick Summary

The Eaton Magnum low-voltage power circuit breaker provides reliable overcurrent protection for industrial control panels. In design-heavy environments, selecting a breaker without the right trip unit can complicate protection coordination and raise downtime during maintenance. This model ships without a trip unit, but is built to support Magnum PXR protection units and Power Xpert Protection Manager integration, with UL Listed, CSA Certified, and CE Marked compliance for global deployments. Its drawout vertical mounting and robust construction simplify field servicing and swap-outs in dense switchgear. Leveraging this breaker within a coordinated protection scheme delivers safer start-ups, reduced arc exposure, and improved overall plant reliability.

Product Information

Extended Description

MPSC403WEAXXSW Eaton: Eaton Magnum low voltage power circuit breaker, Magnum PXR, Double standard frame, 4000 A (ABCABC), 100 kA, Three-pole, Drawout vertical mounting, No trip unit
Product Name
Eaton Magnum low voltage power circuit breaker
Catalog Number
MPSC403WEAXXSW
UPC
786689635046
Product Length/Depth
16.3 in
Product Height
16.8 in
Product Width
31.1 in
Product Weight
237 lb
Compliances
CCC Marked SABA Listed CE Marked NEMA Compliant
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 x64 22.6 1 Power Xpert Protection Manager x64 22.6 1 Eaton Specification Sheet - MPSC403WEAXXSW Eaton Specification Sheet - MPSC403WEAXXSW 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, drawout vertical mounting, 100 kA short-circuit rating, and a 4000 A frame provide robust protection for main feeders in industrial power distribution. Business impact: reduced need for multiple devices and streamlined maintenance planning in high-density panels. Application: suitable for control cabinets and switchgear where space and coordination matter. This model ships without a trip unit, enabling a targeted upgrade path to Magnum PXR protection units for tailored protection schemes and faster fault isolation. Business impact: flexible protection strategy and easier retrofits; Application: plant-wide automation and process-control panels. Compliance with UL Listed, CSA Certified, and CE Marked requirements ensures global applicability and regulatory alignment. Business impact: smoother procurement and fewer compliance roadblocks. Installation and compatibility: fits standard drawout frames, enabling quick swap-outs and minimal downtime during maintenance. Application: OEM panel builds and retrofit projects. ROI considerations: long service life, reduced downtime, and easier upgradeability with Power Xpert tools.

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FAQs

Yes. MPSC403WEAXXSW is a three-pole drawout breaker shipped without a trip unit, designed to be paired with Magnum PXR protection units. It fits standard drawout frames in current panels, enabling easy retrofits and upgrades to advanced protection without replacing the entire assembly.
This model features a 4000 A frame with a 100 kA short-circuit rating and three-pole configuration. It is designed for high-demand power distribution in industrial settings and is shipped without a trip unit, allowing customized protection coordination.
Yes, when paired with compatible Magnum PXR trip units and zone-selective interlocking documentation, this breaker can support selective coordination. The availability of application papers and coordination primers from Eaton helps engineers design safe, efficient protection schemes for complex mandrel and line distribution.
The unit is UL Listed, CSA Certified, and CE Marked, with additional listings such as NEMA compliance. These certifications ensure regulatory acceptance across North America and international markets, simplify vendor audits, and support safe, standards-based installation in diverse facilities.
Since it ships without a trip unit, ROI benefits come from flexible upgrades to Magnum PXR or Power Xpert Protection Manager, enabling tailored protection and remote management. Replacement parts and renewal accessories are available, and the drawout design reduces downtime during maintenance or field swaps.