Eaton MPS8404WEAXX2A Magnum LV Circuit Breaker - PXR20 LSI trip unit

MPS8404WEAXX2A
Manufacturer
Eaton
Part number
MPS8404WEAXX2A
Category

Quick Summary

Eaton Magnum low voltage power circuit breaker protects electrical distribution panels in industrial facilities by interrupting fault currents, reducing arc flash risk and downstream equipment damage. Engineers often struggle with selective coordination, arc energy exposure, and downtime during maintenance or upgrades, which can trigger expensive outages and safety concerns, and ensures compliance with industry safety rules. This unit is CE marked, UL listed, and NEMA compliant, supporting global install-base and safer field integration across varied electrical environments across global markets and diverse installation contexts. Coupled with Power Xpert Release trip units and the PXR20 LSI protection, it speeds maintenance and improves fault isolation for safer, more reliable operations, which translates to lower total cost of ownership.

Product Information

Extended Description

MPS8404WEAXX2A Eaton: Eaton Magnum low voltage power circuit breaker, Magnum PXR, Double standard frame, 4000 A (NNABCABC), 85 kA, Four-pole, Drawout vertical mounting, PXR20 LSI trip unit
Product Name
Eaton Magnum low voltage power circuit breaker
Catalog Number
MPS8404WEAXX2A
UPC
786689628567
Product Length/Depth
16.3 in
Product Height
16.8 in
Product Width
44.1 in
Product Weight
319 lb
Compliances
CE Marked SABA Listed NEMA Compliant CCC Marked
Certifications
ANSI Lloyd's Register Certified KEMA Certified UL Listed 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 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 x32 22.06 1 Power Xpert Protection Manager x32 22.06 1 Eaton Specification Sheet - MPS8404WEAXX2A Eaton Specification Sheet - MPS8404WEAXX2A 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: Four-pole, drawout vertical mounting with a Magnum frame design provides robust physical compatibility across standard switchgear footprints. Business Impact: Simplifies retrofit projects and minimizes panel downtime during replacement, delivering faster deployment in crowded electrical rooms. Application: Ideal for industrial control panels and feeder circuits in manufacturing environments where space is constrained and reliability is critical. Feature: PXR20 LSI trip unit enables adjustable protection settings and precise tripping logic. Business Impact: Improves selective coordination and arc energy management, reducing nuisance trips and energy losses. Application: Suitable for motor control centers and critical process lines needing tight protection coordination. Feature: High interrupting capacity of 85 kA and a 4000 A frame rating supports large fault currents. Business Impact: Reduces cascading faults and improves system resilience during short-circuit events. Application: Useful in high-demand distribution feeders and critical infrastructure. Feature: Global compliance with CE, UL Listed, and NEMA standards. Business Impact: Streamlines procurement and reduces regulatory risk across multi-site deployments. Application: Fits multinational operations requiring consistent certification across regions. Feature: Compatibility with Magnum PXR and Power Xpert ecosystem for monitoring and management. Business Impact: Enables centralized protection management and easier maintenance planning. Application: Integrates with Power Xpert Protection Manager for advanced diagnostics and reporting.

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FAQs

The MPS8404WEAXX2A supports Magnum PXR trip units and features a four-pole, drawout vertical mounting. This enables straightforward replacement in existing switchgear and aligns with Power Xpert Release protection options for enhanced monitoring and coordination in modern panels.
Key specs include a four-pole configuration on a 4000 A frame, an 85 kA interrupting rating, and a PXR20 LSI trip unit. The unit is CE marked, UL Listed, and NEMA compliant, ensuring broad regulatory acceptance and reliable protection in industrial environments.
Yes. With the PXR20 LSI trip unit and precise settings, this breaker supports selective coordination strategies, reducing nuisance trips and improving fault isolation. It harmonizes with other Magnum PXR devices to optimize protection across feeders and motor circuits.
The MPS8404WEAXX2A carries CE Marked, UL Listed, and NEMA compliance, among other certifications. This broad regulatory coverage helps streamline procurement, supplier qualification, and installation across international sites.
Plan for a drawout vertical mounting installation within a four-pole, 4000 A frame footprint. Note the unit dimensions—approximately 16.3 in depth, 16.8 in height, and 44.1 in width—with a 319 lb weight. Ensure compatibility with existing Magnum PXR trip units and space in the switchgear cabinet.