Eaton SPM320240S1U Surge Protection Device - UL 1449
Part Number: SPM320240S1U
Quick Summary
Eaton SPM320240S1U surge protection device protects electrical systems from transient overvoltages in commercial and industrial panels. Nuisance surges and unexpected outages can wear equipment and disrupt production; this SPD helps prevent downtime by intercepting transients before they reach sensitive loads. UL 1449, UL 1283, and CSA certifications, along with RoHS compliance, underpin safety and regulatory alignment, while the rugged NEMA 4 enclosure supports reliable operation in harsh environments. The product is designed for 120/240 V split-phase systems, offering a scalable solution for data centers, manufacturing lines, and facilities that demand dependable power protection and straightforward procurement for long-term value.
Product Information
Extended Description
SPM320240S1U Eaton: Surge Protective Device, Max series, Two modules, 320 kA per phase, 120/240 split phase, Standard with surge counter, NEMA 4 with internal terminal breaker
Product Name
Eaton SPD MAX series surge protection device
Catalog Number
SPM320240S1U
UPC
786685919058
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 CSA Electrical Notice NO. 516 Edition 1 UL 1449 UL 1283
Voltage rating
120/240 V
Enclosure
NEMA 4 with internal terminal breaker
Type
Max series
Special features
Standard with surge counter
Two-module, 320 kA per phase protection provides robust surge handling, reducing the risk of downstream equipment damage and costly downtime in heavy-use environments. This design supports fast response times and reliability, keeping critical loads online during transient events and enabling smoother maintenance windows for panels and switchgear. The 120/240 V split-phase configuration ensures seamless integration with common industrial and commercial electrical systems, eliminating costly rewiring or adapters while preserving compliance with standard utility and equipment standards. The NEMA 4 enclosure with internal terminal breaker adds rugged protection against dust, water, and corrosion, making the unit suitable for outdoor or harsh indoor locations such as loading docks, manufacturing floors, and outdoor electrical rooms. A standard surge counter simplifies monitoring, enabling proactive maintenance planning and faster root-cause analysis after transients. The 15-year warranty, extendable to 20 years with registration, lowers lifecycle costs and provides budgeting certainty for procurement teams. RoHS compliance and formal certifications (UL 1449, UL 1283, CSA) support regulatory documentation and supplier confidence, streamlining audit processes and customer approvals in regulated industries. Overall, the SPM320240S1U combines high surge capacity with field-friendly features that improve reliability, maintenance visibility, and total cost of ownership for critical power protection applications.
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FAQs
The SPM320240S1U is designed for 120/240 V split-phase systems and fits standard panelboards and switchgear setups. Its two-module construction and compact footprint simplify installation, avoiding extensive rework while maintaining compliance with UL and CSA requirements. Plan mounting in accessible, serviceable locations with adequate space for the 50 lb unit and wiring clearances.
This Eaton SPD MAX series device delivers 320 kA per phase protection with two modules. This configuration supports high-energy surge events common in industrial facilities, providing robust transient suppression and extended equipment life. The two-module design also enables scalable protection for evolving power distribution layouts without replacing the assembly.
Yes. The unit features a NEMA 4 enclosure with internal terminal breaker, which protects the SPD from dust, water ingress, and corrosion in outdoor or harsh indoor environments. For outdoor installations, ensure proper mounting clearances and adherence to local electrical codes, and consider ambient temperature and humidity factors as part of preventive maintenance.
The SPM320240S1U carries UL 1449 and UL 1283 certifications, plus CSA standards (including CSA Std. C22.2 No. 8-M1986 and CSA Electrical Notice 516 Edition 1) and RoHS compliance. These certifications help with regulatory approvals, safety audits, and supplier qualification in North American facilities.
The SPD MAX device carries a 15-year warranty from delivery, extended to 20 years if registered on Eaton’s SPD site. This long-term coverage supports lifecycle budgeting, reduces replacement frequency, and, combined with the built-in surge counter, enables proactive maintenance planning and performance tracking for continuous protection.