Eaton PX3-NN400 Surge Protective Device - 50 kAIC
Part Number: PX3-NN400
Quick Summary
Eaton PX3-NN400 surge protective device safeguards three-phase power systems from transient surges in industrial facilities. This compact SPD helps prevent costly downtime and equipment damage in panels and drive systems. While reliability is the priority, practitioners often struggle with unexpected spikes that can ripple across production lines. Common certifications for global use include CE marking, UL listings, and IEC 61643-11 compliance, which validate safety and performance. By design, the PX3-NN400 integrates with standard panel wiring and installation practices, delivering protection with minimal footprint and straightforward maintenance. This combination supports uptime, reduces maintenance costs, and aligns with procurement goals for robust, compliant electrical protection.
Product Information
Extended Description
PX3-NN400 Eaton: Eaton Innovative Technology Protector surge protective device, Surge Protection Device, PX3 series, 50 kAIC, 480 delta, three phase
Product Name
Eaton PX3 surge protective device
Catalog Number
PX3-NN400
UPC
786689805708
Product Length/Depth
2.5 in
Product Height
4.8 in
Product Width
2.9 in
Product Weight
1.25 lb
Feature: 50 kAIC surge rating provides robust protection against high-energy transients. Business Impact: Dramatically lowers the risk of component failure and unplanned outages, improving overall line reliability. Application: Suited for critical three-phase processes where downtime is costly and equipment is sensitive to surges. The Eaton PX3-NN400 delivers dependable protection in demanding industrial environments. Feature: Three-phase protection with 480 V delta configuration ensures comprehensive system safeguarding. Business Impact: Reduces nuisance trips and protects motors, drives, and control circuits from damaging spikes. Application: Ideal for panel boards and motor control centers in manufacturing and processing plants. Feature: Compact footprint (2.5 in D x 4.8 in H x 2.9 in W) and 1.25 lb weight enables easy installation in crowded enclosures. Business Impact: Saves space and simplifies retrofits, accelerating project timelines. Application: Fits tightly packed control cabinets and upgrade projects. Feature: Clear catalog identification (PX3-NN400) and UPC 786689805708 supports traceability. Business Impact: Streamlines procurement, quality control, and after-sales service. Application: Useful for BOMs, asset tracking, and audits. Feature: Durable, field-ready design reduces maintenance costs. Business Impact: Lower total cost of ownership through fewer service calls and longer asset life. Application: Suitable for continuous operation in harsh industrial settings.
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FAQs
To install the PX3-NN400, power must be OFF and the device should be mounted in a suitable enclosure within reach of the three-phase distribution. Connect each phase line to the corresponding L terminals and wire the neutral/ground per the wiring diagram. Verify clearances, torque settings, and enclosure ingress protection before powering up the system.
The PX3-NN400 is rated for a 50 kAIC surge current handling in a 480 V delta, three-phase configuration. Its catalog number is PX3-NN400 and UPC is 786689805708, enabling easy cross-reference in procurement systems. These ratings support protection for industrial power distribution against transient overvoltages.
Yes. The PX3-NN400 is designed for three-phase industrial power protection, including panels that host motor drives and other sensitive equipment. Its 480 V delta rating aligns with common plant power systems, helping minimize motor and drive faults due to transient surges while supporting uptime and equipment longevity.
The PX3-NN400 aligns with widely recognized certifications and standards for surge protection devices, including IEC 61643-11 and commonly cited CE and UL listings where applicable. These certifications matter because they provide evidence of electrical safety, performance reliability, and regulatory compliance for industrial installations and multi-site approvals.
Deploying the PX3-NN400 can reduce unplanned downtime, extend asset life, and lower maintenance costs by limiting surge-related damage to transformers, drives, and controllers. While exact ROI depends on load profiles and outage history, the device’s high surge rating and compact form factor typically translate into faster recovery, better asset protection, and lower total cost of ownership.