Eaton MPSC303WEAXX2F Magnum Low-Voltage Breaker UL Listed
Part Number: MPSC303WEAXX2F
Quick Summary
Eaton Magnum low voltage power circuit breaker protects motor and power distribution circuits in industrial facilities. But in harsh environments, timing, selectivity, and trip reliability are critical to minimize downtime and avoid unnecessary disconnections. This unit carries UL Listed, ANSI KEMA Certified, and CE Marked approvals, with broader certifications that reassure cross-border deployments. By leveraging the PXR20 LSIGAM trip unit and a robust 3000 A standard frame, it delivers precise protection and simplified coordination. The design supports seamless integration with Eaton's Power Xpert Protection Manager, enabling remote monitoring and easier maintenance, while the drawout vertical mounting streamlines installation and field servicing. For manufacturers seeking reliability and lifecycle cost reduction, this breaker fits into many standard power distribution schemes.
Product Information
Extended Description
MPSC303WEAXX2F Eaton: Eaton Magnum low voltage power circuit breaker, Magnum PXR, Standard frame, 3000 A, 100 kA, Three-pole, Drawout vertical mounting, PXR20 LSIGAM trip unit
Product Name
Eaton Magnum low voltage power circuit breaker
Catalog Number
MPSC303WEAXX2F
UPC
786689633226
Product Length/Depth
14.6 in
Product Height
16.8 in
Product Width
16.2 in
Product Weight
118 lb
Compliances
CCC Marked CE Marked NEMA Compliant SABA Listed
Certifications
ANSI KEMA Certified UL Listed CSA Certified 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
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 - MPSC303WEAXX2F
Eaton Specification Sheet - MPSC303WEAXX2F
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 LSIGAM trip unit provides adjustable protection and diagnostics. Business Impact: Enables precise protection coordination, reduces nuisance trips, and supports remote monitoring via Power Xpert Protection Manager. Application: Ideal for motor feeders and main distribution panels in process and manufacturing facilities. Feature: High interrupting capacity of 100 kA with a 3000 A frame. Business Impact: Withstands large fault currents, improves system uptime, and simplifies upstream protection coordination. Application: Suitable for heavy industry, data centers, and large motors. Feature: Drawout vertical mounting and three-pole standard frame. Business Impact: Facilitates safe maintenance, quick field swaps, and easier wiring thanks to clear accessibility. Application: Widely used in compact control panels and modular switchgear. Feature: Broad certifications and compliance (UL Listed, CE Marked, ANSI/KEMA, CSA, etc.). Business Impact: Reduces procurement risk and accelerates international deployment. Application: Supports cross-border projects and regulated installations. Feature: Comprehensive documentation and resources (spec sheets, manuals, application notes). Business Impact: Speeds up installation, commissioning, and ongoing maintenance, lowering total cost of ownership. Application: Useful for engineering teams during design reviews and field servicing.
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FAQs
The MPSC303WEAXX2F uses a drawout vertical mounting configuration within its standard frame, enabling safe, fast replacement and precise alignment in control panels. This design minimizes field downtime during maintenance and supports easy testing and commissioning. It is compatible with three-pole assemblies and integrates smoothly with Eaton's protection accessories for streamlined wiring.
Yes. The breaker delivers a 100 kA short-circuit rating with a 3000 A frame, enabling dependable interruption during severe faults. Proper coordination with upstream devices is essential, and the MPSC303WEAXX2F supports that through the PXR20 trip unit's configurable protection settings and diagnostic capability. This setup helps reduce outage duration and downstream damage on demanding production lines.
The MPSC303WEAXX2F carries UL Listed, ANSI/KEMA Certified, CSA Certified, and CE Marked approvals, along with additional certifications from Lloyd's Register, ABS, and DNV GL. This breadth supports cross-border installations and regulatory compliance, helping procurement avoid certification holds and ensuring market readiness in major regions.
The breaker uses a PXR20 LSIGAM trip unit, offering advanced protection logic, adjustable curves, and run-time diagnostics. It enables fast fault isolation and selective coordination, while Power Xpert Protection Manager provides centralized monitoring and event logging. This combination is well-suited for motor feeders, main panels, and process lines needing modern protection with remote manageability.
Installers benefit from drawout mounting for safer maintenance, clear labeling, and access to Eaton’s engineering library (spec sheets, manuals, application notes). Regular maintenance reduces unplanned downtime and extends breaker life, delivering ROI through improved reliability, lower nuisance-trip losses, and simplified regulatory reporting.