Eaton SPM400220Y4R SPD MAX surge protection UL 1449
Part Number: SPM400220Y4R
Quick Summary
The Eaton SPD MAX surge protection device protects sensitive electrical networks from transient overvoltages in commercial and industrial panels. For engineers, surges cause unplanned downtime and costly equipment repairs that erode project margins. UL 1449 listed and a NEMA 4 enclosure with an internal circuit breaker provide rugged protection for harsh environments and weather exposure. As part of Eaton’s Power Xpert SPD family, it integrates with standard panel distributions and supports lifecycle cost reductions through reliable, field-proven protection.
Product Information
Extended Description
SPM400220Y4R Eaton: Eaton SPD Max series surge protection device, SPD Max Series, 400 kA per phase, 127/220 Wye (4W + G), Power Xpert SPD, NEMA 4 with internal circuit breaker
Product Name
Eaton SPD MAX series surge protection device
Catalog Number
SPM400220Y4R
UPC
786689410476
Product Length/Depth
9.5 in
Product Height
17.05 in
Product Width
15 in
Product Weight
52 lb
Certifications
UL 1449
Voltage rating
127/220 Wye (4W+G)
Surge current
400kA per phase
High surge capability translates to real-world reliability; the device delivers up to 400 kA per phase, reducing downstream equipment damage and maintenance costs in critical MCCs and switchgear. In manufacturing lines, 127/220 V Wye (4W + G) configuration enables straightforward installation across common control circuits, improving uptime and simplifying panel design. The UL 1449 listing along with a NEMA 4 enclosure and internal circuit breaker provides safety and weather resistance for indoor and outdoor installations, lowering risk during commissioning and operation. Seamless compatibility with Eaton’s Power Xpert SPD ecosystem supports streamlined procurement, standardization, and reduced training time for maintenance crews. Its compact footprint and defined mounting envelope improve retrofit feasibility in existing switchgear spaces. Industry veterans appreciate the proven performance in data centers, process plants, and distribution panels, where predictable surge suppression translates to longer asset life and lower total cost of ownership.
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FAQs
Yes. The SPM400220Y4R is a 127/220 V Wye configuration (4W + G) surge protector designed for standard panel installations. It features a NEMA 4 enclosure with an internal circuit breaker, enabling reliable indoor and weather-exposed use. Mounting aligns with common enclosure footprints, and its design supports integration within Eaton’s Power Xpert SPD lineup for cohesive protection.
The unit delivers 400 kA per phase surge current capability, providing strong protection for critical loads and sensitive equipment. This rating helps minimize transient-induced wear on downstream devices, reduces nuisance tripping during high-energy events, and supports longer service intervals in demanding industrial environments.
The SPM400220Y4R is UL 1449 listed for surge protection safety. It also features a NEMA 4 enclosure with an internal circuit breaker, offering robust protection for harsh environments and weather exposure. These certifications and ratings support compliance in many industrial facilities and ease acceptance during audits.
Yes. The SPM400220Y4R is designed to integrate with Eaton’s Power Xpert SPD family, enabling streamlined procurement, standardized installation practices, and simplified field maintenance. This compatibility supports scalable protection across multiple panels and feeders while preserving uniform protection strategies across the site.
By suppressing damaging transients, the SPM400220Y4R lowers downtime, extends asset life, and reduces maintenance costs for critical switchgear and motor systems. Its rugged enclosure and proven surge rating deliver predictable performance, enabling smoother maintenance planning, fewer emergency interventions, and faster project commissioning in industrial environments.