Eaton MPSC303HEAXX2Q Magnum LV Circuit Breaker - UL Listed

Part Number: MPSC303HEAXX2Q
Manufacturer
Eaton
Part number
MPSC303HEAXX2Q

Quick Summary

The Eaton Magnum low voltage power circuit breaker provides reliable overcurrent protection for industrial power in control panels. Engineers often struggle with balancing fast protection with selective coordination to avoid nuisance trips during startup. UL Listed, CE Marked, and CSA Certified versions ensure compliance across global installations and safe operation. This unit leverages a standard frame, 3000 A rating, 100 kA short-circuit withstand, and a PXR25 LSIAM trip unit, delivering robust performance in harsh environments. By integrating with Power Xpert Protection Manager, it enables streamlined protection settings, easier maintenance, and reduced downtime. The combination of solid electrical protection and install-friendly features translates into real business value for end-users and panel builders alike.

Product Information

Extended Description

MPSC303HEAXX2Q Eaton: Eaton Magnum low voltage power circuit breaker, Magnum PXR, Standard frame, 3000 A, 100 kA, Three-pole, Fixed horizontal mounting, PXR25 LSIAM trip unit
Product Name
Eaton Magnum low voltage power circuit breaker
Catalog Number
MPSC303HEAXX2Q
UPC
786689637620
Product Length/Depth
14.6 in
Product Height
16.8 in
Product Width
16.2 in
Product Weight
118 lb
Compliances
NEMA Compliant SABA Listed CE Marked CCC Marked
Certifications
Lloyd's Register Certified ANSI CSA Certified KEMA Certified UL Listed ABS Certified DNV GL Certified
Feature → Business Impact → Application: The PXR25 LSIAM trip unit combines digital protection logic with precise long/instant trip curves, enabling selective coordination and faster fault clearance. This reduces nuisance trips and extends equipment life, which is especially valuable in high-demand manufacturing lines and critical machinery control loops. Application: use in Magnum panels and switchgear where dependable protection and easy integration with protection management software are required. Feature → Business Impact → Application: A standard frame with a 3000 A rating and 100 kA short-circuit capacity provides robust fault handling for large feeders and motors, minimizing downtime during faults. Application: suitable for main distribution or motor control centers in process industries and heavy manufacturing. Feature → Business Impact → Application: Fixed horizontal mounting and three-pole configuration simplify installation in existing enclosures and new builds, reducing alignment time and field errors. Application: retrofits and new builds in control panels where space is constrained or where predictable mounting improves commissioning efficiency. Feature → Business Impact → Application: UL Listed, CE Marked, and CSA Certified status delivers regulatory confidence and streamlined procurement for global sites. Application: multinational facilities that require consistent compliance across plants and supply chains. Feature → Business Impact → Application: Compatibility with Power Xpert Protection Manager provides centralized protection configuration, monitoring, and maintenance, driving lower lifecycle costs. Application: panel builders and OEMs aiming to standardize protection across multiple lines and facilities.

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FAQs

The MPSC303HEAXX2Q is a standard-frame Magnum breaker designed for fixed horizontal mounting in three-pole configurations. It fits panels and switchgear that accommodate Magnum PXR units, provided the enclosure offers the required space, proper bus connection patterns, and mounting hardware. Always verify enclosure compatibility, conductor sizing, and torque specifications per the Eaton installation guide.
The unit uses a PXR25 LSIAM trip unit, delivering electronic protection with long-time, short-time, and instantaneous trip elements. This enables precise selective coordination and fast fault clearance for feeders and motor circuits. It is designed for reliable coordination with other protection devices and integrates with Eaton's protection management ecosystem for centralized control.
Yes. With a 3000 A current rating and 100 kA short-circuit withstand, the MPSC303HEAXX2Q is well-suited for heavy-duty motor feeders and main distribution applications. When used with proper motor control schemes and coordination studies, it helps minimize nuisance trips and provide robust motor protection in demanding environments.
This breaker carries UL Listed, CE Marked, and CSA Certified approvals, among others in its certification roster. These certifications support compliance across North America, Europe, and other regions, simplifying procurement and installation in multinational facilities and ensuring adherence to safety and performance standards.
Follow Eaton's technical manuals for trip unit calibration, periodic inspection, and replacement of renewal parts. Monitor protection settings through the Power Xpert Protection Manager, review time-current curves, and record diagnostic logs. Regular maintenance reduces unexpected outages, extends component life, and sustains coordinated protection across panels and switchgear.