Eaton SPD100240H4M Surge Protection Device - UL 1449
Part Number: SPD100240H4M
Quick Summary
SPD100240H4M surge protection device protects industrial power systems from transient spikes in panel-mounted applications. Engineers often struggle with sudden voltage surges that damage drives, PLCs, and motors, leading to costly downtime. This Eaton unit carries UL 1449 listing and ships in a NEMA 1 enclosure with internal disconnect, supporting safe indoor installation. Designed for 240V high-leg delta service on the B phase, it integrates with Power Xpert SPD for scalable protection across facilities while offering reliable performance and a compact footprint. It delivers robust protection for critical automation and drives uptime, reducing maintenance costs and extending equipment life.
Product Information
Extended Description
SPD100240H4M Eaton: Eaton Surge Protection Device, SPD Series, 100 kA per phase, 240 Delta High Leg (4W + G) on 'B' Phase, Power Xpert SPD, NEMA 1 with internal disconnect enclosure
Product Name
Eaton SPD series surge protection device
Catalog Number
SPD100240H4M
UPC
786689404727
Product Length/Depth
3.48 in
Product Height
12.05 in
Product Width
7.47 in
Product Weight
6.8 lb
Certifications
UL 1449
Accessories
Power Xpert SPD
Used with
NEMA 1 with internal disconnect enclosure
Voltage rating
240V high-leg delta (4W+G) on B phase
Surge current
100 kA per phase
100 kA per phase surge capability protects sensitive drives, PLCs, and motors from industrial transients, reducing unplanned downtime and repair costs in manufacturing cells and packaging lines. The NEMA 1 enclosure with internal disconnect enables safe serviceability in indoor panels, simplifying routine maintenance and isolation during work. With a 240V high-leg delta (4W+G) on the B phase, SPD100240H4M matches common industrial feeders, minimizing wiring errors and enabling straightforward retrofits in existing control panels. Power Xpert SPD compatibility lets you scale protection across multiple panels and machines, supporting modular protection architectures and centralized monitoring. UL 1449 safety listing provides regulatory assurance for critical electrical infrastructure, while its compact footprint and panel-friendly dimensions ease installation and cabinet space planning. Overall, the unit delivers reliable protection with predictable maintenance costs and strong return on investment for automation environments.
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FAQs
For proper installation, mount the SPD100240H4M in indoor panels that use 240V high-leg delta service (B phase). Verify the NEMA 1 enclosure requirements and ensure internal disconnect is accessible for safe servicing. Confirm conductor sizing and torque values per the catalog sheet, and maintain recommended clearances for heat dissipation and access during maintenance.
The device is rated for 100 kA per phase, providing robust energy absorption to protect downstream equipment. In practice, this translates to reduced risk of outlet and drive damage during lightning or switching transients. Pairing with a properly rated panel and wiring minimizes nuisance trips and extends the life of drives, PLCs, and motors.
Yes. SPD100240H4M is part of Eaton’s SPD series and is designed to integrate with Power Xpert SPD architectures. This compatibility enables scalable protection across multiple panels and machines, simplifying installation in facilities that require centralized protection schemes and consistent diagnostic capability.
The SPD100240H4M is UL 1449 listed for surge protection safety. It is designed for indoor use in a NEMA 1 enclosure with internal disconnect, aligning with common industrial installation standards. While other certifications may be relevant to specific regions, UL 1449 listing provides a solid baseline for electrical protection compliance.
By protecting critical power electronics from transients, the SPD reduces unplanned downtime and extends the life of drives, PLCs, and motors. With low ongoing maintenance and no consumable parts, the total cost of ownership improves over time. The compact form factor also simplifies retrofits, accelerating deployment in existing control cabinets.