Eaton PX1-NN400 Surge Protective Device - 50 kAIC
Part Number: PX1-NN400
Quick Summary
The Eaton PX1 surge protective device protects three-phase systems from surges in industrial plants. Unexpected transients threaten uptime and shorten equipment life, driving maintenance costs and downtime. Key certifications and standards for this class typically include CE marking and IEC-derived compliance, ensuring European and global compatibility, with a 50 kAIC rating for robust defense. In practice, this device helps panel builders and integrators meet reliability targets while simplifying field installation. By combining compact form with proven protection, it supports safer, more efficient automation deployments and reduces total cost of ownership over the life of critical electrical infrastructure.
Product Information
Extended Description
PX1-NN400 Eaton: Eaton Innovative Technology Protector surge protective device, Surge Protection Device, PX1 series, 50 kAIC, 480 delta, three-phase
Product Name
Eaton PX1 surge protective device
Catalog Number
PX1-NN400
UPC
786689805630
Product Length/Depth
2.5 in
Product Height
4.8 in
Product Width
2.9 in
Product Weight
1.25 lb
High-energy surge handling (50 kAIC) ensures equipment protection under severe transient events. This translates to fewer component replacements and less unplanned downtime, which is critical for automated lines and mission-critical control cabinets. The three-phase 480V delta compatibility reduces integration risk, enabling straightforward replacement in existing panels without reconfiguring drives or breakers. Compact dimensions (2.5 in depth, 4.8 in height, 2.9 in width) allow easier installation in crowded enclosures, shrinking panel footprints and easing retrofits for modernized automation cells. PX1 series compatibility and streamlined wiring support rapid commissioning, lowering installation time for OEMs and integrators. Compliance-oriented design with industry-standard expectations helps minimize qualification cycles and supports long-term maintenance planning, delivering measurable ROI through improved uptime and reduced maintenance costs.
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FAQs
The PX1-NN400 is designed for 480V delta three-phase systems and integrates with standard Eaton PX1 footprints. To install, mount the device in the enclosure, align with the panel’s bus and terminals, wire line and load connections per the official diagram, and torque all fasteners to specification. Ensure clearance for heat dissipation and verify that the wiring path minimizes exposure to physical damage. This approach simplifies retrofits and reduces commissioning time.
A 50 kAIC rating indicates the device can safely withstand multiple transient surges up to 50 kiloamperes on each phase before protection degrades. This reduces the risk of damage to downstream equipment like drives, relays, and PLCs during electrical storms, switching events, or grid disturbances. In practice, you’ll see fewer failed components and less unplanned downtime in automated systems with heavy inductive loads.
Yes. The PX1-NN400 is designed for three-phase industrial environments and 480V delta systems, making it well-suited for automation panels, machine control cabinets, and process equipment. Its high surge rating, compact form, and PX1-series compatibility support scalable protection across multiple enclosure types, simplifying design choices and reducing panel footprint without compromising safety.
Certification details for this exact model aren’t listed in the data provided. However, devices in the PX1 family typically align with CE marking and IEC-based standards to support European and global markets. Region-specific approvals should be confirmed with the supplier or distributor to ensure regulatory compliance for your installation site.
By limiting transient damage and minimizing downtime, the PX1-NN400 delivers a tangible return on investment through improved uptime and reduced maintenance costs. Its compact installation and straightforward replacement within PX1 configurations also lower commissioning time and lifecycle costs, while enabling scalable protection as the automation footprint grows.