Eaton SPD MAX SPM400220Y4T - Surge Protection Device - UL 1449
Part Number: SPM400220Y4T
Quick Summary
SPD MAX surge protection device protects electrical systems from transient surges in industrial power distribution. Unpredictable surges cause costly downtime and equipment damage, challenging uptime targets and warranty compliance. It carries UL 1449 certification and is housed in a NEMA 4 enclosure, with an internal terminal block for rugged, field-ready installation. For engineers seeking scalable protection across controls, motors, and panel boards, the Power Xpert SPD compatibility and 127/220 V Wye configuration deliver reliable protection and simplified maintenance in data centers, manufacturing lines, and energy-management projects.
Product Information
Extended Description
SPM400220Y4T 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 terminal block
Product Name
Eaton SPD MAX series surge protection device
Catalog Number
SPM400220Y4T
UPC
786689410483
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 rating with 400 kA per phase provides immediate energy absorption, reducing the risk of damage to critical loads such as PLCs, drives, and motor controls. This translates to measurable uptime improvements, lower repair costs, and longer asset life in demanding environments. The 127/220 V Wye (4W + G) configuration offers straightforward integration with standard control power architectures, enabling quick deployment across multi-panel facilities and compatible Power Xpert SPD ecosystems. UL 1449 certification combined with a rugged NEMA 4 enclosure ensures regulatory compliance and reliable outdoor or damp-location performance, minimizing maintenance cycles and service disruptions. The internal terminal block simplifies field wiring, minimizes connection errors, and accelerates commissioning, while the compact form factor fits standard electrical cabinets and reduces installation footprint. Industry teams benefit from coordinated protection, reduced total cost of ownership, and faster ROI through improved system resilience. In practice, engineers report easier preventative maintenance planning and lower risk exposure during panel upgrades and expansions.
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FAQs
Install the unit on a clean, grounded mounting surface inside a protected enclosure. Use the internal terminal block to connect the four conductors (three lines plus ground) per the datasheet, following proper torque values. Ensure the system is de-energized during wiring, then verify continuity and perform a commissioning check. The unit’s UL 1449 compliance and NEMA 4 enclosure support reliable installation in industrial environments.
The SPM400220Y4T provides up to 400 kA per phase surge current rating, enabling rapid energy absorption to protect sensitive equipment such as PLCs, drives, and panel boards. This rating is a key selector for protecting multi-load installations and ensuring coordinated protection across industrial power distribution networks.
Yes. The unit is designed with a NEMA 4 enclosure, delivering reliable protection in outdoors and damp locations. UL 1449 certification further supports regulatory compliance. For outdoor use, mount in a sheltered location when possible and follow standard wiring practices to maximize performance and longevity of protected loads.
Key certifications include UL 1449, and the device features a NEMA 4 enclosure for robust environmental protection. It operates with 127/220 V Wye (4W + G) supply and delivers 400 kA per phase surge protection, making it suitable for industrial controls, motor protection, and data-center power distribution.
By limiting surge damage, SPD MAX reduces downtime, extends equipment life, and lowers spare-part costs. Its Power Xpert SPD compatibility enables coordinated protection across protective devices, supporting faster commissioning and lower maintenance time. Overall, facilities see improved uptime, lower risk exposure, and a faster payback on protection investments.