Eaton SPC120277N3P Surge Protection Device - UL 1449
Part Number: SPC120277N3P
Quick Summary
SPC120277N3P surge protection device from Eaton protects electrical systems from transient surges in industrial facilities. Fluctuating voltages and nuisance surges threaten sensitive equipment and cause costly downtime. UL 1449 listed with a rugged NEMA 4X enclosure supports harsh environments and long service life. This surge protector combines 120 kAIC protection and external side mounting to streamline installation and protect critical loads. In addition, the audible alarm provides immediate fault indication to maintenance teams. Its compact 5.5 in x 6 in x 3.19 in form factor and 2.5 lb weight simplify retrofits while delivering robust surge suppression. Operating at 277 V with a single-phase configuration makes it ideal for commercial lighting and manufacturing feeders.
Product Information
Extended Description
SPC120277N3P Eaton: Surge Protection Device, SPC series, 120 kA, 277V, Single-phase, NEMA 4X, Audible alarm
Product Name
Eaton SPC series surge protection device
Catalog Number
SPC120277N3P
UPC
786680218316
Product Length/Depth
5.5 in
Product Height
6 in
Product Width
3.19 in
Product Weight
2.5 lb
Warranty
10 year
Certifications
UL 1449
Type
Surge protection device
Special features
Audible alarm
Voltage rating
277 V
Enclosure
NEMA 4X
Phase
Single-phase
Mounting Method
External side
Interrupt rating
120 kAIC
Series
SPC
Feature: 120 kAIC interrupt rating. Business Impact: High surge handling capacity reduces the risk of downstream equipment damage and unplanned downtime. Application: Panels and feeders in manufacturing lines where large transient currents are possible. Feature: 277 V voltage rating. Business Impact: Direct compatibility with common industrial power distributions, minimizing wiring complexity. Application: 277 V lighting circuits and equipment feeds in warehouses and facilities. Feature: NEMA 4X enclosure. Business Impact: Durable protection against dust, water, and corrosion for indoor and outdoor installations. Application: Outdoor equipment rooms and washdown areas. Feature: Audible alarm. Business Impact: Immediate fault notification improves maintenance response and uptime. Application: Critical loads in process lines and packaging machinery. Feature: External side mounting. Business Impact: Flexible installation options reduces panel footprint constraints and retrofit time. Application: Retrofit projects in existing switchboards and distribution panels. Feature: 10 year warranty + UL 1449 listing. Business Impact: Lower total cost of ownership and compliant protection for long-term operations. Application: Industrial facilities seeking reliable, code-compliant surge protection with long service life. Keywords integrated: SPC surge protector, 277 VAC SPD, NEMA 4X enclosure SPD, UL 1449 listed surge protector, audible alarm SPD, external side mounting, industrial electrical protection.
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FAQs
The SPC120277N3P is designed for external side mounting, enabling straightforward retrofits in many standard distribution panels. Begin by verifying compatible enclosure dimensions, mount the unit on a stable surface adjacent to the panel, and route conductors per the catalog sheet. Use the included hardware and ensure a clean, grounded installation to maintain UL 1449 compliance and optimized surge protection performance.
This model supports a 120 kAIC interrupt rating and operates at 277 V single-phase. These specifications make it suitable for many commercial/industrial distribution systems, including lighting and feeder circuits, while meeting UL 1449 surge protection standards.
Yes. The device uses a rugged NEMA 4X enclosure designed to withstand dust, water, and washdown conditions, enabling reliable operation in outdoor or harsh environments. Proper installation should still follow local codes and manufacturer guidelines to maintain environmental protection ratings.
The 10-year warranty reflects long-term reliability and reduces lifecycle risk for mission-critical systems. By choosing a UL 1449 listed SPD with durable enclosure, you gain lower maintenance frequency, predictable replacement cycles, and lower total cost of ownership while protecting capital equipment.
The audible alarm provides immediate fault indication, allowing on-site personnel to identify surge events without monitoring equipment continuously. Coupled with UL 1449 compliance, this feature supports faster troubleshooting, reduces unplanned downtime, and helps document protective events for ongoing reliability programs.