Eaton MPSC303HEAXXSW Magnum LV Circuit Breaker - 100 kAIC
Part Number: MPSC303HEAXXSW
Quick Summary
Eaton Magnum low voltage power circuit breaker is designed to deliver reliable overcurrent protection for industrial power distribution. This unit helps engineers avoid unplanned downtime by simplifying fault isolation and maintenance planning. UL Listed, CSA Certified, and CE Marked—with ANSI/KEMA certification context—provide broad global compliance, helping you meet stringent regulatory requirements. With a fixed horizontal mounting and a three-pole frame, it offers straightforward installation, a scalable upgrade path to Power Xpert Release trip units, and seamless integration with Magnum PXR protection strategies to support next-generation protection architectures in panelboards and switchgear.
Product Information
Extended Description
MPSC303HEAXXSW Eaton: Eaton Magnum low voltage power circuit breaker, Magnum PXR, Standard frame, 3000 A, 100 kA, Three-pole, Fixed horizontal mounting, No trip unit
Product Name
Eaton Magnum low voltage power circuit breaker
Catalog Number
MPSC303HEAXXSW
UPC
786689637538
Product Length/Depth
14.6 in
Product Height
16.8 in
Product Width
16.2 in
Product Weight
118 lb
Compliances
CCC Marked NEMA Compliant SABA Listed CE Marked
Certifications
ANSI KEMA Certified Lloyd's Register Certified CSA Certified UL Listed ABS Certified DNV GL Certified
Frame
Standard
Number of poles
Three-pole
Type
Magnum PXR
Frame
Standard
Series
Magnum
Number of poles
Three-pole
Rated uninterrupted current (Iu)
3000 A
Interrupt rating
100 kAIC
Interrupt rating
100 kAIC
Rated uninterrupted current (Iu)
3000 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
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 - MPSC303HEAXXSW
Eaton Specification Sheet - MPSC303HEAXXSW
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
Feature: High interrupt capability of 100 kAIC and Iu rating of 3000 A enables protection of large feeders and main lugs, reducing arc flash exposure and enabling safer, more reliable distribution. Business Impact: Enhanced system resilience and reduced nuisance trips translate to measurable uptime improvements and lower maintenance costs in heavy industrial environments. Application: Suitable for motor control centers and distribution panels with demanding fault current levels. Feature: Three-pole, standard frame design with fixed horizontal mounting simplifies substitution and retrofits in existing switchgear. Business Impact: Faster installation, lower labor costs, and predictable envelope fit for upgrading legacy breakers. Application: Ideal for retrofit projects and new installations in industrial facilities. Feature: No trip unit shipped with the base device, enabling a flexible upgrade path to Power Xpert Release (PXR) trip units. Business Impact: Allows phased protection upgrades without scrapping existing hardware, improving total cost of ownership. Application: Compatible with Magnum PXR configurations for coordinated protection strategies. Feature: Broad certification and compliance footprint (UL Listed, CSA Certified, CE Marked, ANSI/KEMA Certified, SABA/NEMA aligned). Business Impact: Simplifies global procurement, auditing, and safety compliance across multinational sites. Application: Suitable for multinational projects with standardized protection requirements. Feature: Compatibility with Power Xpert Protection Manager and ZSI coordination guidance from Eaton. Business Impact: Enables remote monitoring, centralized protection management, and advanced coordination schemes to improve overall plant reliability. Application: Enterprise protection strategy integration for modern, energy-efficient facilities.
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FAQs
The MPSC303HEAXXSW uses a fixed horizontal mounting in a standard Magnum frame, designed for three-pole installations. It ships without a trip unit, enabling easy retrofits or upgrades to Power Xpert Release (PXR) trip units. This makes it compatible with existing switchgear while allowing a phased protection upgrade path.
This breaker provides a rated uninterrupted current (Iu) of 3000 A and an interrupt rating of 100 kAIC, suitable for high-current feeders and main protections in large distribution panels. It is designed for reliable protection in demanding industrial environments.
Yes. The device carries UL Listed, CSA Certified, and CE Marked certifications, along with ANSI/KEMA certification, supporting global procurement and regulatory compliance across multiple regions and project specifications.
Absolutely. The unit is designed to accept Power Xpert Release (PXR) trip units, enabling advanced coordination, protective relays, and remote management via associated software. This upgrade pathway helps optimize protection schemes without replacing the entire breaker.
Ideal for motor control centers and distribution panels in industrial facilities with high fault currents. Its three-pole configuration, compatibility with Magnum PXR, and broad certification make it suitable for global installations requiring scalable protection, zone interlocking options, and easy integration with protection management systems.