Eaton SPM120480D4R Surge Protection Device - UL 1449
Part Number: SPM120480D4T
Quick Summary
The Eaton SPM120480D4R surge protection device protects 480V delta systems against transient surges in industrial facilities. Unprotected power transients cause unexpected downtime and expensive equipment damage, slow production, and undermine power quality. The unit is UL 1449 listed and housed in a NEMA 4 enclosure with an internal circuit breaker for safe, field-serviceable protection. With its 120 kA per phase rating and 480V delta capability, it supports demanding industrial environments. This SPD also integrates with Eaton's protection ecosystem, enabling centralized monitoring and faster fault diagnosis. By selecting this model, engineers reduce downtime risk while meeting industry standards and improving power quality across critical loads, manufacturing lines, and control panels.
Product Information
Extended Description
SPM120480D4T Eaton: Eaton SPD Max series surge protection device, SPD Max Series, 120 kA per phase, 480 Delta (3W + G), Power Xpert SPD, NEMA 4 with internal terminal block
Product Name
Eaton SPD MAX series surge protection device
Catalog Number
SPM120480D4T
UPC
786689409845
Product Length/Depth
9.5 in
Product Height
17.05 in
Product Width
15 in
Product Weight
52 lb
Certifications
UL 1449
Voltage rating
480 Delta (3W+G)
Surge current
120kA per phase
Feature: The SPM120480D4R delivers a 120 kA per phase surge current rating, enabling aggressive transient suppression for 480V delta systems. Business Impact: This level of protection reduces insulation stress on downstream transformers, drives, and PLCs, minimizing unplanned downtime and extending asset life. Application: Field installations in manufacturing lines, material handling systems, and critical power feeds benefit from dependable surge suppression against utility faults and switching transients. Feature: NEMA 4 enclosure with internal circuit breaker. Business Impact: Outdoor and harsh-environment installations gain weather-resistant protection with simplified maintenance due to the built-in service capability. Application: Outdoor panels, areas with washdowns, and retrofit sites in food processing, water treatment, and chemical processing. Feature: 480 Delta (3W+G) configuration. Business Impact: Enables precise protection coordination with downstream devices and straightforward wiring in standard industrial power networks. Application: Panels supplying motors and drives in delta-connected systems. Feature: UL 1449 listed SPD Max series with Power Xpert compatibility. Business Impact: Regulatory compliance and seamless integration with Eaton's monitoring and protection software, improving fault diagnosis and asset management. Application: Integrated protection strategy in facilities using Power Xpert SPD and Eaton's protection ecosystem. Feature: Robust dimensions and weight—9.5 in depth, 15 in width, 17.05 in height, and 52 lb. Business Impact: Predictable mounting footprint and inventory planning, easing installation in new builds or upgrades. Application: Distribution boards and panel upgrades in control rooms and plant floors.
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FAQs
Install SPM120480D4R in a 480V delta distribution path with a suitable mounting location that suits its 9.5 in depth, 15 in width, and 17.05 in height. Utilize the internal circuit breaker for serviceability and ensure wiring follows 480V delta (3W+G) configurations. Verify enclosure is maintained to preserve NEMA 4 integrity in exposed or industrial environments.
120 kA per phase means the device can divert a very large transient current on each phase without exceeding its maximum voltage holdover. This translates to enhanced protection for downstream equipment, minimizing insulation stress and reducing the risk of damage during high-energy surges from utility events or switching transients.
Yes. The SPM120480D4R is part of Eaton's SPD MAX series and is designed to integrate with Eaton's Power Xpert SPD ecosystem, enabling centralized monitoring, coordinated protection, and easier asset management across multiple protection devices within a facility.
The device is UL 1449 listed, ensuring compliance with recognized SPD safety standards. It is housed in a NEMA 4 enclosure with an internal circuit breaker, providing protection suitable for outdoor and harsh industrial environments and simplifying field maintenance.
By reducing transient damage and downtime, the SPM120480D4R can lower repair costs and extend the life of downstream equipment such as motors and drives. The built‑in circuit breaker and NEMA 4 enclosure also streamline maintenance, limit unplanned outages, and support compliance across power distribution upgrades.