Eaton SPM320240H3Y Surge Protection Device - NEMA 4X
Part Number: SPM320240H3Y
Quick Summary
Surge Protection Device from Eaton SPM320240H3Y protects critical electrical systems in industrial facilities. Its core function is to clamp transient overvoltages and divert surge energy away from essential equipment, reducing downtime and component wear. Voltage spikes can cause costly outages and accelerated asset degradation; this SPD mitigates transients at the source to keep drives, controllers, and motors operating smoothly. The device carries UL 1449 and UL 1283 listings, CSA certification, and RoHS compliance, underscoring safety and reliability in demanding environments. With a rugged NEMA 4X enclosure and an internal terminal block, installation is straightforward across new or retrofit panels, while a 15-year warranty (20 years with online registration) supports long-term total cost of ownership goals.
Product Information
Extended Description
SPM320240H3Y Eaton: Surge Protective Device, Max series, Two modules, 320 kA per phase, 240 Delta high leg (4W+G) on B phase, Standard with surge counter, NEMA 4X w/ internal terminal block
Product Name
Eaton SPD MAX series surge protection device
Catalog Number
SPM320240H3Y
UPC
786685919591
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 1449 UL 1283 CSA Electrical Notice NO. 516 Edition 1
Voltage rating
240 delta (4W+G)
Enclosure
NEMA 4X with internal terminal block
Type
Max series
Special features
Standard with surge counter
Two-module MAX series design delivers 320 kA per phase protection, providing substantial headroom to absorb surge energy from heavy motor drives and power-intensive panels. This reduces nuisance tripping and downstream equipment stress, improving uptime and extending asset life in manufacturing lines and critical plant feeders. The rugged enclosure and internal terminal block simplify wiring and maintenance, enabling safer, faster field installation in both indoor and outdoor locations where moisture, dust, and corrosion are considerations. A standard surge counter enables proactive maintenance planning and performance validation, helping facilities meet reliability targets without guesswork. RoHS compliance and UL/CSA certifications give compliance confidence for regulated environments, while the 9.3 in L × 14.91 in W × 17.5 in H footprint suits retrofit and new builds alike. With 50 lb weight, it pairs well with other protection devices in the Eaton SPD MAX family for scalable protection strategies, supporting reduced lifecycle costs and easier project execution.
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FAQs
When installing the SPM320240H3Y, plan for the internal terminal block wiring and the two-module layout to fit within the panel depth. Ensure proper clearance around the NEMA 4X enclosure to maintain cooling and moisture protection. Use appropriate wiring gauges and torque specifications, and verify alignment with existing Eaton SPD MAX components for a cohesive protection strategy.
The 320 kA per phase rating provides substantial headroom to absorb high-energy transients typical of large motors, drives, and switching gear. This reduces the likelihood of downstream component damage and minimizes nuisance tripping, enabling systems to ride out short-lived grid disturbances without unplanned outages.
Yes. The SPM320240H3Y is specified for 240 delta (4W+G) configurations, including the B phase high-leg arrangements. This makes it well-suited for industrial feeders and equipment rooms that require reliable transient protection across all three phase legs with a grounded neutral.
The device is RoHS compliant and UL-listed for 1449 and 1283, with CSA certifications. These approvals support code compliance in North American facilities and provide assurance for safety, performance, and regulatory alignment in industrial environments.
The SPD MAX device carries a 15-year warranty from delivery, or 20 years when registered online with Eaton. This extended warranty reduces total cost of ownership by lowering replacement risk, improving uptime guarantees, and aligning with long project lifecycles in manufacturing and process industries.