Eaton MPSC303MEAXX2S Magnum LV Circuit Breaker - 100 kAIC

Part Number: MPSC303MEAXX2S
MPSC303MEAXX2S
Manufacturer
Eaton
Part number
MPSC303MEAXX2S
Category

Quick Summary

Eaton Magnum low voltage power circuit breaker protects motor and distribution circuits in industrial facilities. Engineers struggle with coordinating protection schemes, reducing arc energy, and ensuring safe, efficient drawout rack replacement in live cabinets. This unit carries UL Listed, CE Marked, and CSA Certified marks to meet global safety and reliability requirements for critical infrastructure. Featuring the Magnum PXR trip unit, it enables precise coordination and fast fault interruption, boosting uptime and reducing maintenance costs in industrial protection schemes. Its 3000 A Iu rating and 100 kAIC interrupt rating ensure dependable protection for motors and feeders during startups and faults. Designed for standard frame, three-pole drawout with motorized racking, it fits common switchgear and simplifies upgrades and replacements.

Product Information

Extended Description

MPSC303MEAXX2S Eaton: Eaton Magnum low voltage power circuit breaker, Magnum PXR, Standard frame, 3000 A, 100 kA, Three-pole, Drawout vertical with motorized racking mounting, PXR25 LSIGAM trip unit
Product Name
Eaton Magnum low voltage power circuit breaker
Catalog Number
MPSC303MEAXX2S
UPC
786689637781
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
KEMA Certified CSA Certified ANSI Lloyd's Register Certified UL Listed ABS Certified DNV GL Certified
Frame
Standard
Number of poles
Three-pole
Type
Magnum PXR
Frame
Standard
Series
Magnum
Trip Type
PXR25 LSIG ARMS
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 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 - MPSC303MEAXX2S Eaton Specification Sheet - MPSC303MEAXX2S Magnum low-voltage power circuit breakers (ANSI and IEC) renewal parts and accessories Magnum PXR 20/25 electronic trip units time current curves Safer by design: arc energy reduction techniques Safer by design: arc energy reduction techniques Safer by design: arc energy reduction techniques
Feature: Drawout vertical with motorized racking mounting and PXR25 LSIGAM trip unit. Business Impact: Reduces maintenance downtime and ensures quick, safe rack operations without live-reach exposure. Application: Ideal for routine maintenance in crowded switchgear and high-density installations. Feature: 3000 A Iu rating with 100 kAIC interrupt capability. Business Impact: Handles large startup surges and short-circuit events with high reliability, lowering the risk of collateral equipment damage. Application: Motors, feeders, and critical process lines in manufacturing and data centers benefit from this robust protection. Feature: Standard frame, three-pole drawout configuration. Business Impact: Streamlines retrofits and replacements, enabling faster commissioning and inventory compatibility. Application: Replacement breakers in existing Magnum PXR installations and standard switchgear footprints. Feature: Motorized racking mounting and drawout design. Business Impact: Improves maintenance safety and reduces labor costs through tool-free or minimized-access operations. Application: Routine transformer and panel maintenance in industrial plants. Feature: Global certifications and compliance (UL Listed, CE Marked, CSA Certified). Business Impact: Eases multi-region procurement, regulatory audits, and uptime guarantees. Application: Global facilities, OEM integrations, and regulated industries.

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FAQs

Yes. The MPSC303MEAXX2S uses the Magnum PXR standard frame and is designed for three-pole, drawout vertical mounting with motorized racking, ensuring straightforward retrofits into existing Magnum PXR installations and compatible switchgear.
It features a rated uninterrupted current (Iu) of 3000 A and an interrupt rating of 100 kAIC, providing strong fault protection for high-demand industrial feeders and motor circuits.
Ideal for industrial power distribution, motor feeders, and process lines in manufacturing, data centers, and critical infrastructure where high surge endurance and reliable protection are essential.
The unit is UL Listed, CE Marked, and CSA Certified, meeting global safety and reliability standards. These certifications support cross-border deployments, supplier audits, and regulatory compliance in regulated industries.
Motorized racking and the PXR trip unit enable faster maintenance and precise protection coordination, reducing downtime and labor costs. Integration with Power Xpert Protection Manager helps monitor trips and performance for better uptime and decision-making.