Eaton MPSC303WEAXXSW Magnum low voltage power circuit breaker - 100 kAIC

Part Number: MPSC303WEAXXSW
MPSC303WEAXXSW
Manufacturer
Eaton
Part number
MPSC303WEAXXSW
Category

Quick Summary

The Eaton Magnum low voltage power circuit breaker protects critical power distribution in industrial control panels and switchgear. Engineers often face nuisance trips, limited protection coordination, and lengthy downtime when selecting a breaker that fits both capacity and compliance needs. This model carries CE Marked, UL Listed, and CSA Certified (with Lloyd's Register certification) to meet global standards, reducing procurement risk. By aligning with Magnum PXR trip units and Power Xpert Protection Manager, it enables scalable protection strategies, improves reliability, and supports maintenance workflows without sacrificing performance in demanding environments.

Product Information

Extended Description

MPSC303WEAXXSW Eaton: Eaton Magnum low voltage power circuit breaker, Magnum PXR, Standard frame, 3000 A, 100 kA, Three-pole, Drawout vertical mounting, No trip unit
Product Name
Eaton Magnum low voltage power circuit breaker
Catalog Number
MPSC303WEAXXSW
UPC
786689637941
Product Length/Depth
14.6 in
Product Height
16.8 in
Product Width
16.2 in
Product Weight
118 lb
Compliances
CE Marked CCC Marked SABA Listed NEMA Compliant
Certifications
ANSI Lloyd's Register Certified CSA Certified UL Listed KEMA Certified 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 - MPSC303WEAXXSW Eaton Specification Sheet - MPSC303WEAXXSW 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 → Business Impact → Application: Three-pole, standard frame design simplifies integration into existing power distribution setups and reduces wiring complexity for main feeders in manufacturing lines and data centers. This enables faster commissioning and easier future expansions. Feature → Business Impact → Application: Drawout vertical mounting facilitates rapid maintenance and fault isolation, minimizing downtime during inspections and replacements in control cabinets and switchgear. Feature → Business Impact → Application: High interrupt rating of 100 kAIC and Iu of 3000 A delivers enhanced fault protection for large motor loads and feeders, reducing energy let-through and downstream damage in heavy industry. Feature → Business Impact → Application: No trip unit shipped by default provides flexible trip-unit selection; Magnum PXR compatibility allows you to tailor protection schemes with Power Xpert Release trip units for precise coordination. Feature → Business Impact → Application: Global certifications (UL, CSA, CE, Lloyd’s Register) support compliance across sites; the rugged build and standard frame support easy installation and lifecycle management in diverse environments. Feature → Business Impact → Application: Power Xpert Protection Manager compatibility enables centralized protection management and event logging, improving proactive maintenance and ROI for plants investing in digital protection strategies.

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FAQs

Install as a three-pole, drawout device in a standard Magnum frame panel with vertical mounting. Ensure bus connections and wiring follow the Eaton installation guides (refer to MN013016en and the Magnum PXR quick-start manuals) for proper torque, alignment, and safety clearances. Use the drawout feature to facilitate maintenance without disturbing neighboring circuits.
The MPSC303WEAXXSW ships without a trip unit by default, allowing you to select a Magnum PXR trip unit to suit your protection scheme. Compatible options include Power Xpert Release trip units. For setup and coordination details, consult the Magnum PXR product aid (pa013007en) and the protection-manager Quick Start guides.
The unit is CE Marked, UL Listed, and CSA Certified, with additional Lloyd's Register certification. It also aligns with SABA and other regional requirements in its documented test and compliance reports, supporting global deployment and audit readiness.
The breaker is rated for Iu of 3000 A with an interrupt rating of 100 kAIC, supplied in a standard Magnum frame with three poles. Dimensions are 14.6 in (L) x 16.8 in (H) x 16.2 in (W) and weight is 118 lb, suitable for main feeders in heavy-duty industrial installations.
Its compatibility with Magnum PXR trip units and Power Xpert Protection Manager enables centralized coordination, event tracking, and faster fault isolation. The drawout design reduces maintenance time, while the standard frame and vertical mounting simplify installation and future upgrades, delivering a quick return on investment through reduced downtime.