Eaton SPD100240S4O Surge Protection Device - UL 1449
Part Number: SPD100240S4O
Quick Summary
SPD100240S4O is a surge protection device engineered to safeguard critical electrical panels and equipment from transient overvoltage. In industrial environments, surges can cause unexpected downtime, equipment damage, and escalating maintenance costs; this unit responds quickly to clamp spikes and protect sensitive loads. It carries UL 1449 certification and is housed in a NEMA 4 enclosure, enabling reliable indoor and outdoor deployment. By integrating this SPD into power distribution, facilities can improve power quality, extend component life, and drive lower total cost of ownership. The solution aligns with Power Xpert SPD families, delivering scalable protection for 120/240V split-phase systems and reinforcing plant reliability.
Product Information
Extended Description
SPD100240S4O Eaton: Eaton Surge Protection Device, SPD Series, 100 kA per phase, 120/240 Split Phase, Power Xpert SPD, NEMA 4 with internal disconnect enclosure
Product Name
Eaton SPD series surge protection device
Catalog Number
SPD100240S4O
UPC
786689405120
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 4 with internal disconnect enclosure
Voltage rating
120/240V split single-phase
Surge current
100 kA per phase
High surge capability delivers robust protection where it matters most. Feature: 100 kA per phase surge current. Business impact: minimizes risk of tripped breakers and damaged drives, enabling higher line uptime. Application: protecting motor starters, controllers, and critical loads in panel boards. The result is measurable downtime reduction and safer operation in heavy manufacturing environments. Compatibility with 120/240V split-phase systems ensures seamless integration into existing electrical infrastructure, reducing rework and wiring complexity. Application: retrofit opportunities in legacy installations while maintaining compliance with standard electrical codes. The rugged NEMA 4 enclosure with internal disconnect simplifies installation in both indoor and outdoor locations, streamlining maintenance cycles and reducing field labor costs. This design choice supports quick diagnostics and serviceability, improving total lifecycle efficiency. Industry insight: many facilities realize a meaningful drop in spare-part spend after standardizing on Eaton SPD devices within Power Xpert ecosystems. Performance consistency across temperature and load conditions translates to predictable protection for vital equipment.
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FAQs
SPD100240S4O is designed for straightforward panel-mount installation within NEMA 4 enclosures. The internal disconnect simplifies maintenance by allowing safe isolation of the device without external disassembly. To install, mount the unit in a suitable space, connect the input and load conductors per the panel's wiring diagram, and verify proper grounding. This approach minimizes field wiring errors and supports rapid replacement when necessary.
Key specifications include 120/240V split-phase operation and a surge current rating of 100 kA per phase. The device is UL 1449 listed, designed for protection at the panel level, and is intended for use with NEMA 4 enclosures. The compact form factor and Power Xpert compatibility enable efficient integration into existing electrical distributions while maintaining reliable surge suppression.
Yes. The SPD is housed in a NEMA 4 enclosure, providing weather resistance suitable for outdoor and harsh indoor environments. This protection helps maintain performance in varying temperatures and exposure to dust or moisture, reducing the likelihood of enclosure-related failures. When installed in accordance with the datasheet, it supports dependable surge protection across a range of industrial locations.
The SPD100240S4O carries UL 1449 certification, indicating compliance with recognized safety standards for surge protective devices. This certification supports regulatory compliance for electrical installations in many jurisdictions and simplifies acceptance by electrical inspectors. While not a substitute for all local standards, UL 1449 listing is a strong indicator of product reliability and safe operation within standard panels and distribution systems.
By limiting transient overvoltage events, this SPD reduces unplanned downtime, mitigates damage to sensitive drives and controls, and extends component life. The result is lower maintenance costs, fewer spare parts, and improved uptime for critical processes. When integrated as part of a Power Xpert SPD strategy, facilities typically experience more predictable power quality and faster mean time to recovery after surge events.