Eaton SPM300480D4R Surge Protection Device - UL 1449
Part Number: SPM300480D4R
Quick Summary
The Eaton SPM300480D4R surge protection device provides robust transient suppression for 480V delta systems in industrial control panels. In manufacturing environments, voltage spikes threaten downtime and equipment life, making reliable protection critical. UL 1449 listing and a rugged NEMA 4 enclosure with an internal circuit breaker support safe operation in harsh indoor and outdoor spaces, while Power Xpert SPD compatibility adds visibility and control. By integrating this surge protector into your electrical protection strategy, you improve power quality, reduce maintenance costs, and extend asset life across critical automation and drive systems.
Product Information
Extended Description
SPM300480D4R Eaton: Eaton SPD Max series surge protection device, SPD Max Series, 300 kA per phase, 480 Delta (3W + G), Power Xpert SPD, NEMA 4 with internal circuit breaker
Product Name
Eaton SPD MAX series surge protection device
Catalog Number
SPM300480D4R
UPC
786689410360
Product Length/Depth
9.5 in
Product Height
17.05 in
Product Width
15 in
Product Weight
52 lb
Certifications
UL 1449
Voltage rating
480 Delta (3W+G)
Surge current
300kA per phase
High surge capability is the core feature: 300 kA per phase. This translates to a higher protection margin for sensitive drives, relays, and contactors, reducing insulation damage risk and unplanned downtime in three-phase delta distributions. The business impact is clear: fewer nuisance trips and less production interruption on demanding manufacturing lines that rely on stable power delivery. The rugged enclosure with an internal circuit breaker simplifies installation and maintenance, enabling faster cabinet upgrades and safer service while maintaining compliance in industrial environments. UL 1449 safety certification and Power Xpert SPD compatibility offer a scalable path to monitoring and trend analysis, improving asset health metrics and facilitating predictive maintenance. The unit’s precise dimensions and weight support straightforward retrofits in existing switchgear and distribution panels, delivering reliable protection with minimal footprint and total cost of ownership advantages. With these features, engineers can design more resilient power distribution and protect critical loads from damaging transients in industrial facilities.
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FAQs
When installing the SPM300480D4R in a 480V delta system, locate the device on the load side of the main distribution panel and integrate it within a properly rated enclosure. Verify clearances for the NEMA 4 rated enclosure, ensure correct wiring of the three-phase and ground connections, and follow the UL 1449 wiring guidelines. Consider future expansion with Power Xpert monitoring for visibility.
The 300 kA per phase rating provides a substantial margin against large, fast electrical transients common in industrial facilities. This reduces the likelihood of EVT damage to downstream drives, PLCs, and contactors, minimizes unexpected downtime, and lowers maintenance costs by preventing repeated component failures during voltage spikes and switching events.
Yes, the SPM300480D4R is positioned for Power Xpert SPD compatibility, enabling enhanced monitoring, data logging, and fault diagnostics. This integration helps track surge events, plan preventative maintenance, and improve overall power quality management across critical automation assets.
The device is UL 1449 listed for safety and comes in a NEMA 4 enclosure, offering reliable protection against dust, rain, and hose-directed water. This combination supports safe operation in challenging indoor and outdoor industrial settings, aligning with common electrical protection standards and installation best practices.
Maintenance focuses on periodic inspection of terminal connections, verification of protective status via diagnostics if connected to Power Xpert, and inspection after extreme surge events. The internal circuit breaker aids safe testing, while the rugged build reduces the need for frequent component replacements, delivering better uptime and lower total cost of ownership.