Eaton Magnum LV Circuit Breaker MPS8403MEAXX2C - 85 kAIC

MPS8403MEAXX2C
Manufacturer
Eaton
Part number
MPS8403MEAXX2C
Category

Quick Summary

Eaton Magnum LV Circuit Breaker provides robust overcurrent protection for large motor and process loads in industrial plants. This high-capacity breaker helps reduce nuisance trips and unplanned downtime by precisely coordinating with the PXR20 LSIG trip unit. For engineers, the challenge is balancing safety, maintenance access, and regional compliance in switchgear assemblies. The unit carries UL Listed, CSA Certified, and CE Mark certifications, with additional approvals such as KEMA, ANSI, Lloyd’s Register, ABS, and DNV GL to support global deployment. By combining a drawout vertical design with motorized racking and the Magnum PXR platform, it delivers serviceability, safer maintenance routines, and improved lifecycle value for panel builders and end users.

Product Information

Extended Description

MPS8403MEAXX2C Eaton: Eaton Magnum low voltage power circuit breaker, Magnum PXR, Double standard frame, 4000 A (ABCABC), 85 kA, Three-pole, Drawout vertical with motorized racking mounting, PXR20 LSIG trip unit
Product Name
Eaton Magnum low voltage power circuit breaker
Catalog Number
MPS8403MEAXX2C
UPC
786689628437
Product Length/Depth
16.3 in
Product Height
16.8 in
Product Width
31.1 in
Product Weight
237 lb
Compliances
NEMA Compliant CCC Marked CE Marked SABA Listed
Certifications
CSA Certified UL Listed KEMA Certified ANSI Lloyd's Register Certified ABS Certified DNV GL Certified
Frame
Double standard
Number of poles
Three-pole
Type
Magnum PXR
Frame
Double standard
Series
Magnum
Trip Type
PXR20 LSIG
Number of poles
Three-pole
Rated uninterrupted current (Iu)
4000 A
Interrupt rating
85 kAIC
Interrupt rating
85 kAIC
Rated uninterrupted current (Iu)
4000 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 x32 22.06 1 Power Xpert Protection Manager x32 22.06 1 Eaton Specification Sheet - MPS8403MEAXX2C Eaton Specification Sheet - MPS8403MEAXX2C Magnum low-voltage power circuit breakers (ANSI and IEC) renewal parts and accessories Magnum PXR 20/25 electronic trip units time current curves Cyber security white paper Cyber security white paper Cyber security white paper
Magnum PXR LSIG trip unit provides precise overcurrent protection and coordinated tripping for complex feeders, reducing nuisance trips while protecting motors and process lines. This improves equipment uptime and simplifies device coordination in modern switchgear applications such as MCCs and motor control panels. The breaker uses a drawout vertical mounting with motorized racking, enabling quick removal and replacement without extended panel downtime. This feature reduces maintenance labor costs and minimizes technician exposure in live equipment environments. The frame is a double standard design supporting a three-pole configuration, ensuring compatibility with common switchgear footprints and scalable protection schemes across multiple feeders. Global certifications (UL Listed, CSA Certified, CE Marked, KEMA, ANSI, LR, ABS, DNV GL) support consistent compliance in multinational facilities. Clear dimensional planning (16.3 in depth, 16.8 in height, 31.1 in width) and a 237 lb weight help integration teams optimize rack space and lifting safety for installation teams.

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FAQs

Plan for a drawout vertical mounting with motorized racking and ensure the panel footprint accommodates a double standard frame with a three-pole configuration. The unit measures 16.3 in depth, 16.8 in height, and 31.1 in width, with a weight of 237 lb, enabling straightforward rack alignment and safe lifting procedures during installation.
It delivers a rated uninterrupted current (Iu) of 4000 A and an interrupt rating of 85 kAIC. The trip unit is PXR20 LSIG, configured for a three-pole, drawout setup, designed to provide reliable protection coordination across demanding motor and process applications.
Yes. With 4000 A Iu capacity and 85 kAIC interrupt rating, plus the Magnum PXR trip framework, it is well-suited for large MCCs, pumps, conveyors, and other high-demand motor systems, delivering dependable protection and streamlined maintenance in harsh industrial environments.
The device is UL Listed, CSA Certified, and CE Marked, with additional approvals including KEMA, ANSI, Lloyd’s Register, ABS, and DNV GL. It also carries NEMA compliance and CCC/SABA markings, facilitating regulatory readiness across regions.
The drawout design with motorized racking reduces maintenance downtime and exposure risk, while the LSIG trip unit improves protection accuracy. Global certifications simplify cross-border projects, and compatibility with Power Xpert Protection Manager aids centralized protection management, delivering lower total cost of ownership over the breaker’s lifecycle.