Eaton SPC120277N5P Surge Protection Device - UL 1449
Part Number: SPC120277N5P
Quick Summary
Surge Protection Device SPC120277N5P from Eaton delivers robust transient suppression for 277 V single‑phase panels in industrial environments. This SPD helps protect sensitive motors, drives, and controls from utility spikes and switching transients, reducing downtime and maintenance costs. Many engineers struggle with nuisance tripping and unclear fault signaling; the SPC120277N5P addresses these issues with a built‑in audible alarm and Form C relay for immediate notification and remote signaling. It carries UL 1449 certification and ships in a rugged NEMA 4X enclosure, enabling outdoor or harsh indoor installations. By combining reliable protection with straightforward installation, it supports uptime, compliance, and safer electrical infrastructure.
Product Information
Extended Description
SPC120277N5P Eaton: Surge Protection Device, SPC series, 120 kA, 277V, Single-phase, NEMA 4X, Audible alarm and Form C relay
Product Name
Eaton SPC series surge protection device
Catalog Number
SPC120277N5P
UPC
786680218330
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 & Form C relay
Voltage rating
277 V
Enclosure
NEMA 4X
Phase
Single-phase
Mounting Method
External side
Interrupt rating
120 kAIC
Series
SPC
High surge capability and signaling: The SPC120277N5P provides 120 kAIC interrupt rating at 277 V, ensuring rapid energy absorption during large transient events. The built‑in audible alarm and Form C relay deliver immediate fault indication and remote signaling, reducing manual inspection needs. This combination translates into measurable downtime reduction and less wear on downstream drives, contactors, and motors. In practical terms, engineers can rely on consistent protection for critical loads while avoiding nuisance outages from utility spikes or switching transients. Compatibility and installation: Designed for 277 V single‑phase systems with external side mounting, the SPC120277N5P simplifies retrofit projects and minimizes panel space conflicts. Quick wiring and flexible mounting options enable faster deployment and easier field service, particularly in control cabinets and outdoor equipment where space is at a premium. Rugged protection and compliance: The NEMA 4X enclosure provides dust, water, and corrosion resistance, making it suitable for harsh industrial and outdoor environments. UL 1449 certification confirms adherence to surge protection safety standards, supporting facility compliance programs and risk management. Monitoring and lifecycle: Audible alarm plus Form C relay enables proactive maintenance signaling and remote monitoring integration with plant dashboards or BMS. A 10‑year warranty reinforces long‑term ownership value, reducing lifecycle costs for OEMs and end users alike. Overall, the SPC120277N5P delivers reliable surge mitigation for critical loads such as drives, motors, and programmable controls, with installation flexibility and strong protection against environmental challenges.
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FAQs
Install with external side mounting for 277 V single‑phase circuits. Connect the device to the line and load conductors, ensure proper grounding, and mount within a NEMA 4X enclosure. Utilize the built‑in audible alarm and Form C relay for fault signaling, and perform a functional test per Eaton specifications after wiring.
Key specs include 277 V operation, single‑phase configuration, 120 kAIC interrupt rating, 5.5 in depth, 6 in height, 3.19 in width, and a weight of about 2.5 lb. It carries a 10‑year warranty and UL 1449 certification, making it suitable for demanding industrial environments.
Yes. The SPC120277N5P is housed in a NEMA 4X enclosure, providing protection against dust, water, and corrosion. This makes it well suited for outdoor installations and harsh indoor environments, supporting reliable surge protection for panels exposed to weather and industrial contaminants.
The device is UL 1449 listed and features a NEMA 4X enclosure. It also includes a 10‑year warranty, which supports long‑term reliability and helps satisfy facility safety and reliability programs in manufacturing and process environments.
By absorbing transient surges and signaling faults, it reduces unplanned downtime and extends motor, drive, and control life. The audible alarm and remote signaling enable proactive maintenance, while the rugged enclosure and UL 1449 compliance simplify regulatory alignment and improve overall equipment reliability and ROI.