Eaton MPSC303HEAXX2S Magnum LV circuit breaker UL Listed

Part Number: MPSC303HEAXX2S
MPSC303HEAXX2S
Manufacturer
Eaton
Part number
MPSC303HEAXX2S
Category

Quick Summary

Magnum LV circuit breaker is Eaton’s high-capacity overcurrent protection device for industrial power distribution. Engineers often struggle with coordination and fault isolation in large motor and process lines, where a missaligned trip can trigger unnecessary outages. This model delivers precise PXR25 LSIGAM trip-unit performance, enabling selective coordination and faster fault clearance, reducing downtime. With CE marking, UL Listed status, and NEMA compliance, it meets global regulatory expectations while supporting safe operation in diverse environments. Built for reliability, it integrates seamlessly with Power Xpert Protection Manager and offers flexibility in fixed horizontal mounting, three-pole configuration, and a 3000 A frame with 100 kA interrupting capacity. The result is a robust, scalable protection solution that aligns with lean manufacturing and asset lifecycle goals.

Product Information

Extended Description

MPSC303HEAXX2S Eaton: Eaton Magnum low voltage power circuit breaker, Magnum PXR, Standard frame, 3000 A, 100 kA, Three-pole, Fixed horizontal mounting, PXR25 LSIGAM trip unit
Product Name
Eaton Magnum low voltage power circuit breaker
Catalog Number
MPSC303HEAXX2S
UPC
786689637675
Product Length/Depth
14.6 in
Product Height
16.8 in
Product Width
16.2 in
Product Weight
118 lb
Compliances
CE Marked SABA Listed CCC Marked NEMA Compliant
Certifications
Lloyd's Register Certified UL Listed KEMA Certified ANSI CSA 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 Power Xpert Release trip unit for Magnum PXR circuit breakers PXR 20/25 user manual Power Xpert Release trip unit for Magnum PXR circuit breakers PXR 20/25 user manual Power Xpert Release trip unit for Magnum PXR circuit breakers PXR 20/25 user manual Circuit Protection, Power Breakers, Contactors and Fuses, Volume 4, Tab 3 Power Xpert Protection Manager x32 22.06 1 Power Xpert Protection Manager x32 22.06 1 Eaton Specification Sheet - MPSC303HEAXX2S Eaton Specification Sheet - MPSC303HEAXX2S 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: PXR25 LSIGAM trip unit delivers precise electronic protection with fast fault clearance. Business Impact: Improves selectivity and reduces arc energy exposure, cutting downtime and maintenance costs. Application: Large motor starter panels and process lines where coordinated protection is critical. Feature: 3000 A frame with 100 kA short-circuit rating. Business Impact: Handles high fault currents without nuisance trips, enabling safer security margins and longer service intervals. Application: Heavy industry, data centers, and critical plant sections requiring robust fault containment. Feature: Three-pole, fixed horizontal mounting. Business Impact: Eases panel integration and reduces installation time, improving site safety and labor efficiency. Application: New builds and retrofits in switchgear assemblies and control cabinets. Feature: Compatibility with Power Xpert Release trip units (PXR) and LSIGAM functionality. Business Impact: Enables centralized protection management, streamlined diagnostics, and firmware upgrades. Application: Enterprise-grade automation facilities and multi-bus distributions. Feature: Comprehensive certifications (CE Marked, UL Listed, NEMA Compliant, CCC, SABA, Lloyd’s, KEMA). Business Impact: Expands market access and simplifies procurement with confidence in regulatory compliance. Application: Global manufacturing plants subject to multiple standards. Feature: Robust mechanical design and standard dimensions. Business Impact: Predictable panel fit, reduced engineering variance, and easier lifecycle planning. Application: OEMs and retrofit projects in tight space constraints and variable enclosure sizes.

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FAQs

The MPSC303HEAXX2S is designed as a three-pole, fixed horizontal mounting unit, ideal for standard switchgear assemblies. It fits within established Magnum frame dimensions and supports straightforward panel integration, reducing commissioning time and simplifying wiring and clearance planning.
It uses the PXR25 LSIGAM electronic trip unit, which enables precise, fast fault detection and selective coordination. This improves reliability by preventing unnecessary trips on non-faulted circuits, reducing downtime and arc energy exposure in demanding motor and process applications.
Yes. The breaker carries CE Marked and UL Listed credentials and is NEMA compliant, with additional certifications including CCC and SABA as part of Eaton’s broader certification portfolio, supporting global deployment across regulated environments.
It is well suited for large motor feeders, process lines, and critical manufacturing zones where high interrupting capacity (100 kA) and a 3,000 A frame are required, such as data centers, steel mills, and chemical processing facilities.
The unit’s protection accuracy and compatibility with Power Xpert Protection Manager enable centralized monitoring, reducing maintenance downtime. Its high rating and robust build lower lifecycle costs by enhancing reliability, extending service intervals, and simplifying upgrade paths in growing automation environments.