Eaton SPM300480Y4T SPD MAX Surge Protector - UL 1449
Part Number: SPM300480Y4T
Quick Summary
Eaton SPD MAX SPM300480Y4T surge protection device protects 277/480 V systems in industrial facilities. It helps prevent downtime from transient surges that can damage drives, PLCs, and motor controllers. UL 1449 listed with a rugged NEMA 4 enclosure ensures reliability in harsh indoor or outdoor environments. Its 277/480 V Wye configuration supports widespread industrial power distribution without complex rewiring. Engineers and procurement teams gain straightforward installation, compatibility with Power Xpert SPD platforms, and a clear path to compliance. In operations, this translates to reduced unplanned downtime, extended equipment life, and predictable maintenance budgeting.
Product Information
Extended Description
SPM300480Y4T Eaton: Eaton SPD Max series surge protection device, SPD Max Series, 300 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
SPM300480Y4T
UPC
786689410407
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
300kA per phase
300 kA per phase surge capability provides immediate protection for critical loads, reducing the risk of damage to drives, PLCs, and motor controllers. This translates into shorter unplanned downtime and lower replacement costs. The 277/480 V Wye (4W+G) configuration supports common industrial distributions, simplifying system design and enabling faster project execution for retrofits and new installations. The NEMA 4 enclosure with an internal terminal block offers rugged protection in harsh environments and streamlines wiring during panel mounting or standalone protection setups. UL 1449 listing confirms safety and reliability, helping meet stringent procurement and compliance requirements in regulated industries. With a footprint of 9.5 in L x 15 in W x 17.05 in H and a 52 lb weight, installation planning and rack space allocation become predictable, aiding site readiness and maintenance planning. Power Xpert SPD compatibility ensures seamless integration with Eaton protection ecosystems, reducing lifecycle complexity and supporting scalable protection strategies for data centers and manufacturing floors.
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FAQs
Begin by verifying panel space and insulating the internal terminal block. Mount the unit in a suitable location, connect the line and load conductors per the catalog instructions, and ensure proper grounding. Confirm voltage rating matches your distribution system (277/480 V Wye) and secure all terminations. Finally, perform a functional test to verify surge protection operation and verify UL 1449 compliance during commissioning.
A 300 kA per phase rating indicates the surge protector can safely absorb large transient currents per phase without failing, protecting downstream drives, PLCs, and motors. This high rating reduces the likelihood of equipment damage during severe lightning strikes or switching surges, supporting lower replacement costs and less downtime in mission-critical applications.
Yes. The 277/480 V Wye configuration, NEMA 4 enclosure, and high surge capacity make it well-suited for data centers, motor control centers, and factory floors. Its rugged enclosure supports indoor and outdoor placements, while its compatibility with Power Xpert SPD platforms simplifies integration into existing protection schemes.
The SPM300480Y4T is UL 1449 listed, indicating compliance with recognized safety and performance standards for surge protection devices. The NEMA 4 enclosure further supports installation in demanding environments, aiding regulatory and facilities-based compliance for industrial electrical distribution.
Routine inspections—checking terminations, enclosure integrity, and visual condition—are advised during regular maintenance cycles. The 300 kA per phase rating and UL 1449 listing contribute to lower downtime and replacement costs by preserving upstream equipment. Integration with Power Xpert SPD platforms also simplifies ongoing monitoring and firmware updates, maximizing lifecycle value.