Eaton SPM250480Y4T SPD MAX surge protector - UL 1449
Part Number: SPM250480Y4T
Quick Summary
The SPM250480Y4T is a surge protection device for industrial power distribution. Power disturbances can drive equipment damage, unplanned downtime, and costly repairs across manufacturing floors. UL 1449 certification and a rugged NEMA 4 enclosure support reliable indoor and outdoor use, with 250 kA per phase protection for 277/480 V Wye systems. This Eaton design leverages the Power Xpert SPD platform and an internal terminal block to streamline installation and service, reducing wiring errors and maintenance time. For integrators, OEMs, and facilities teams, it translates into fewer outages, faster fault isolation, and a safer, more compliant protection strategy. Coupled with proven field performance, it helps protect capital equipment and maximize uptime.
Product Information
Extended Description
SPM250480Y4T Eaton: Eaton SPD Max series surge protection device, SPD Max Series, 250 kA per phase, 277/480 Wye (4W + G), Power Xpert SPD, NEMA 4 with internal terminal block
Product Name
Eaton SPD MAX series surge protection device
Catalog Number
SPM250480Y4T
UPC
786689408329
Product Length/Depth
9.5 in
Product Height
17.05 in
Product Width
15 in
Product Weight
52 lb
Certifications
UL 1449
Voltage rating
277/480 Wye (4W+G)
Surge current
250kA per phase
The 250 kA per phase surge rating delivers robust transient protection for large motor loads, drives, and sensitive controls. By absorbing high-energy surges at the source, this SPD reduces insulation stress, keeps relays from welding shut, and minimizes nuisance tripping on downstream breakers. The result is fewer unplanned outages and lower maintenance costs in heavy-use environments. For OEMs and plant engineers, the SPM250480Y4T translates to increased line reliability and a tangible return on protection investment, especially where critical loads demand uninterruptible service. 277/480 V Wye (4W+G) configuration enables seamless integration with common industrial distributions. The built-in compatibility reduces field rewiring and simplifies retrofits into existing panels, accelerating commissioning and lowering project risk. With Power Xpert SPD interoperability, you can consolidate protection strategy across devices from the same family, improving diagnostics, trending, and proactive maintenance for motor controls, pumps, and conveyors. NEMA 4 enclosure provides rugged, weather-resistant protection for indoor and outdoor installations. This rating, together with UL 1449 listed performance, offers dependable operation in dusty or damp environments and varying temperatures. The protection extends across installation sites from manufacturing floors to outdoor switchgear, helping facilities comply with safety and reliability standards while avoiding costly enclosure upgrades. Internal terminal block simplifies wiring and service. Fewer field connections reduce installation time and the chance of wiring errors, while easier access speeds preventive maintenance and fault isolation. The unit’s clean wiring interface supports streamlined panel layouts and compatibility with Power Xpert SPD monitoring modules, enabling centralized protection management for technicians and engineers. Compatibility with the SPD ecosystem and panel builders' workflows adds installation and maintenance advantages. The SPM250480Y4T supports modular upgrades, scalable protection, and straightforward replacement of failed modules, which translates to lower lifecycle costs. Real-world experience shows improved uptime, simplified spare part planning, and faster incident response for critical infrastructure, including data centers, process lines, and industrial automation systems.
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FAQs
The SPM250480Y4T is designed for 277/480 V Wye (4W+G) distribution and integrates with Eaton’s Power Xpert SPD ecosystem. It supports standard industrial panels and machine control cabinets, enabling straightforward retrofits with minimal rewiring. Its internal terminal block simplifies wiring and reduces commissioning time, making it suitable for OEMs, system integrators, and facilities teams seeking reliable protection without complex installation.
This device provides 250 kA per phase surge current protection, a rating that handles high-energy transients typical of industrial motors and drives. It is UL 1449 listed, ensuring compliance with recognized surge protection standards. The combination of high surge rating and standardized certification offers robust protection for critical loads while supporting consistent performance across multiple feeders within a facility.
Yes. The SPM250480Y4T uses a NEMA 4 enclosure, which is designed for indoor and outdoor environments with exposure to dust, moisture, and varying temperatures. Its rugged construction makes it appropriate for data centers’ edge power feeds and outdoor panel enclosures in harsh industrial settings, while UL 1449 compliance ensures reliable protection for sensitive equipment in these environments.
The SPM250480Y4T carries UL 1449 certification, a key standard for surge protection devices, and a NEMA 4 enclosure rating. These credentials matter because they confirm the product’s safety, reliability, and suitability for demanding industrial conditions. UL 1449 provides tested performance against transients, while NEMA 4 supports weatherproof operation, contributing to long service life and regulatory confidence.
The SPD’s internal terminal block simplifies maintenance by reducing wiring complexity and fault-tracing time, lowering labor costs during inspection or replacement. Its high surge capacity minimizes the risk of downstream equipment damage, leading to fewer outages and reduced repair costs. Overall, the SPM250480Y4T delivers a faster ROI through improved uptime, easier upgrade paths, and predictable protection for critical automation assets.