Eaton MPS85N4WEAXX2A Magnum LV circuit breaker - UL Listed

Part Number: MPS85N4WEAXX2A
MPS85N4WEAXX2A
Manufacturer
Eaton
Part number
MPS85N4WEAXX2A
Category

Quick Summary

Eaton Magnum low voltage power circuit breaker protects critical electrical systems in industrial plants and motor control centers. Engineers face nuisance trips and unplanned downtime; selecting a protective device that harmonizes with existing coordination schemes is essential. This model carries UL Listed, CE Marked, and SABA Listed certifications, ensuring compliance across North American and international installations, while the PXR20 LSI trip unit enables precise, selective protection. The combination supports safer operation, improved continuity, and easier maintenance, translating to lower lifecycle costs and faster project delivery for OEMs and end users alike.

Product Information

Extended Description

MPS85N4WEAXX2A Eaton: Eaton Magnum low voltage power circuit breaker, Magnum PXR, Double standard frame, 5000 A (NNAABBCC), 85 kA, Four-pole, Drawout vertical mounting, PXR20 LSI trip unit
Product Name
Eaton Magnum low voltage power circuit breaker
Catalog Number
MPS85N4WEAXX2A
UPC
786689640453
Product Length/Depth
16.3 in
Product Height
16.8 in
Product Width
44.1 in
Product Weight
319 lb
Compliances
NEMA Compliant CCC Marked CE Marked SABA Listed
Certifications
Lloyd's Register Certified ANSI UL Listed KEMA Certified 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 x64 22.6 1 Power Xpert Protection Manager x64 22.6 1 Eaton Specification Sheet - MPS85N4WEAXX2A Eaton Specification Sheet - MPS85N4WEAXX2A 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 → Business Impact → Application: The PXR20 LSI trip unit provides advanced protection logic that improves selectivity and fault isolation, reducing nuisance trips and speeding fault clearance in complex panel schedules. This directly lowers downtime costs and enhances safety in high-stakes environments, such as motor control centers and distribution panels. Feature → Business Impact → Application: Four-pole design with drawout vertical mounting delivers robust mechanical stability and straightforward retrofit into existing Magnum frames, enabling rapid deployment in new builds or upgrades with minimal cabinet modification. Application spans industrial plants and process facilities where reliable, modular protection is critical. Feature → Business Impact → Application: 85 kA interrupting capacity and a 5000 A frame rating support high fault current scenarios, increasing system resilience and reducing the risk of cascading failures in dense switchgear assemblies. Ideal for harsh plant conditions and high-power loads. Feature → Business Impact → Application: NEMA Compliant, CE Marked, SABA Listed and UL Listed certifications provide regulatory confidence and smoother cross-border commissioning, accelerating procurement cycles and reducing risk during audits. Application includes multinational installations and regulated industries such as food & beverage, chemicals, and metals. Feature → Business Impact → Application: Power Xpert Release trip unit integration enables remote diagnostics and compatibility with Eaton protection management tools, delivering proactive maintenance insights and shorter mean time to repair in maintenance programs. Application includes modern retrofit projects and new builds seeking digital integration. Feature → Business Impact → Application: Comprehensive technical documentation and downloadable assets support fast engineering decisions, delivering faster time-to-value for project teams and easier ongoing training for maintenance staff.

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FAQs

This unit is designed for four-pole, drawout vertical mounting within Magnum frames. It integrates with the PXR20 LSI trip unit for selective protection and is compatible with panelboards and motor control centers that support Magnum PXR devices. Verify enclosure space, bus bar clearance, and compatible accessories in the Eaton Magnum installation guides before deployment.
The PXR20 LSI trip unit provides advanced protection logic, enabling accurate short-circuit protection and selective coordination. This reduces nuisance trips, speeds fault clearance, and supports safer operation in high-current panels, MCCs, and distribution systems, while enabling remote protection management through Eaton tools.
Yes. The combination of four-pole construction, high interrupting capacity (85 kA), and the PXR20 LSI trip unit supports selective coordination schemes in motor control centers and panelboards, helping to prevent unnecessary outages and protect upstream devices in fault events.
The unit is UL Listed and CE Marked, with additional conformance to SABA Listed and NEMA-compliant requirements. Other certifications in the broader Magnum portfolio include Lloyd's Register, KEMA, CSA, ABS, and DNV GL, supporting global deployment and regulatory compliance.
Benefits include reduced downtime through precise fault isolation and arc-energy management, easier maintenance from drawout mounting, and lifecycle integration with Eaton Power Xpert Protection Manager for diagnostics and proactive servicing. These factors collectively contribute to lower total cost of ownership in plant protection schemes.