Eaton SPM250480Y1T SPD - NEMA 4 Enclosure (277/480) UL1449
Part Number: SPM250480Y1T
Quick Summary
The Eaton SPD MAX surge protection device SPM250480Y1T provides robust transient protection for industrial power systems. Unpredictable surges can cause costly downtime and equipment damage, challenging reliability targets across production lines and facilities. It carries UL1449 and CSA certifications with UL 1283 and RoHS compliance, reinforcing safety, performance, and regulator alignment. Designed for 277/480 V Wye systems, it uses a NEMA 4 enclosure with an internal terminal breaker to simplify wiring and service in demanding environments.
Product Information
Extended Description
SPM250480Y1T Eaton: Surge Protective Device, Max series, Single module, 250 kA per phase, 277/480 Wye (4W+G), Basic, NEMA 4 with internal terminal breaker
Product Name
Eaton SPD MAX series surge protection device
Catalog Number
SPM250480Y1T
UPC
786685917658
Product Length/Depth
9.3 in
Product Height
17.5 in
Product Width
14.91 in
Product Weight
50 lb
Warranty
15 years from the date of delivery (20 years when registered on www.eaton.com/spd)
Compliances
RoHS Compliant
Certifications
CSA Std. C22.2 No. 8-M1986 UL 1283 CSA Electrical Notice NO. 516 Edition 1 UL 1449
Voltage rating
277/480 Wye (4W+G)
Enclosure
NEMA 4 with internal terminal breaker
Type
Max series
Special features
Basic
The 250 kA per phase surge rating delivers robust transient protection, reducing downstream equipment damage and unplanned outages in demanding distribution networks. A NEMA 4 enclosure with an internal terminal breaker enhances installation flexibility, allowing placement in harsh or wash-down areas while keeping wiring clean and accessible. With a 277/480 V Wye (4W+G) voltage rating, this device minimizes the need for unnecessary transformers and streamlines system design, boosting overall efficiency. RoHS compliance and multiple certifications reassure procurement teams about regulatory alignment and supplier reliability, reducing compliance risk and accelerating approvals. A 15-year warranty (20 years when registered) lowers total cost of ownership and demonstrates Eaton’s confidence in long-term performance, supporting budgeting and lifecycle planning for facilities teams. Its compact single-module design simplifies retrofits and spare-part management, reducing downtime during maintenance and upgrades.
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FAQs
Begin by verifying panel space for a single-module SPD MAX device and confirm 277/480V Wye availability. Mount the unit in a suitable location within a NEMA 4 enclosure. Connect conductors to the internal terminal breaker per Eaton wiring diagrams, observe torque specs and color-coding, then test with a surge simulator before commissioning. The internal breaker simplifies wiring, reducing panel crowding.
250 kA per phase indicates the maximum surge current the device can safely divert per phase without damage. This rating helps protect sensitive equipment from high-energy transient events, reducing repair and replacement costs. In practice, this means fewer interruptions, lower maintenance frequencies, and a lower total cost of ownership over the system’s life.
Yes. The device is specified with a NEMA 4 enclosure, providing weatherproofing and protection against ingress in harsh or wash-down environments. This makes it appropriate for outdoor panels, damp locations, and facilities requiring robust protection against dust and water exposure, helping maintain reliability with minimal additional enclosure upgrades.
The unit carries UL 1449 and UL 1283 certifications, along with CSA standards and RoHS compliance. This combination supports regulatory compliance, simplifies supplier qualification, and gives buyers confidence in safety and performance. It also helps with audits and procurement approvals in industries with strict electrical protection requirements.
Eaton offers a 15-year warranty from delivery, extending to 20 years when registered on Eaton’s SPD site. This extended coverage reduces replacement risk and maintenance costs, contributing to a lower total cost of ownership over the equipment’s lifespan and improving return on investment for critical protection in manufacturing or process environments.