Eaton SPC050277N4P Surge Protection Device - UL 1449
Part Number: SPC050277N4P
Quick Summary
Eaton SPC050277N4P surge protection device protects electrical systems from transient surges in single-phase 277 V applications. Power disturbances can cause unplanned downtime, equipment damage, and costly outages, especially in control panels, MCCs, and machine enclosures. This SPC Series unit is UL 1449 listed and housed in a rugged NEMA 4X enclosure, enabling reliable indoor and outdoor installation. With a 50 kA surge rating and a Form C relay, it supports fast fault signaling and easy integration into Eaton protection schemes. When reliability and compliance matter, this SPD delivers long-term protection with a 10-year warranty, while its external side mounting facilitates scalable protection for growing facilities.
Product Information
Extended Description
SPC050277N4P Eaton: Surge Protection Device, SPC series, 50 kA, 277V, Single-phase, NEMA 4X, Form C relay
Product Name
Eaton SPC series surge protection device
Catalog Number
SPC050277N4P
UPC
786680215445
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
Special features
Form C relay
Voltage rating
277 V
Enclosure
NEMA 4X
Phase
Single-phase
Mounting Method
External side
Series
SPC
Feature: 50 kA surge rating. Benefit: robust transient protection reduces damage to sensitive equipment and minimizes downtime, improving uptime for manufacturing lines and automation cabinets. Application: ideal for panel boards and motor control centers in industrial facilities. Feature: 277 V rating. Benefit: optimized protection for common industrial and commercial equipment operating at nominal 277 V, enabling targeted defense for lighting and drives. Application: control panels, conveyors, and machine tools. Feature: NEMA 4X enclosure. Benefit: weatherproof, dustproof protection for harsh environments, lowering maintenance and replacement costs. Application: outdoor installations and wash-down areas. Feature: Form C relay. Benefit: enhanced fault signaling and switch/kickback integration to support alarm systems and remote monitoring. Application: centralized protection schemes and condition monitoring. Feature: External side mounting. Benefit: simplifies retrofits and new installations with flexible placement in existing enclosures. Application: retrofit projects and new builds in industrial facilities. Feature: 10-year warranty and UL 1449 certification. Benefit: lower total cost of ownership and verified compliance for regulatory audits. Application: procurement, compliance documentation, and long-term support for OEMs and integrators.
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FAQs
The SPC050277N4P uses an external side mounting method, designed for straightforward installation in standard electrical enclosures. For best results, ensure adequate clearance for heat dissipation, follow the enclosure manufacturer’s guidelines, and verify cable routing to minimize interference with control wiring. This approach streamlines retrofits and new installations alike, reducing commissioning time.
Yes, the device includes a Form C relay, enabling signaling and switching for alarms or remote monitoring. This compatibility simplifies integration with existing protection schemes, control systems, and asset management software, helping engineers implement proactive fault detection and faster response without additional components.
Best suited for single-phase 277 V systems in panel boards, motor control centers, and automation cabinets, the SPC050277N4P is designed for both indoor and outdoor use thanks to the NEMA 4X enclosure. It provides robust transient protection for industrial machinery, HVAC controls, and processing equipment in dynamic manufacturing environments.
The device is UL 1449 listed for safety and protection performance. It features a rugged NEMA 4X enclosure suitable for wetted or dusty environments, enabling reliable operation in industrial settings. These certifications support compliance with regulatory and quality standards while offering dependable protection for critical assets.
The SPC050277N4P delivers ROI through reduced downtime, fewer damaged components, and extended life of downstream equipment. It carries a 10-year warranty, minimizing maintenance costs. Routine inspections are recommended to verify connections and signaling integrity, but the device remains a low-maintenance, long-term protection solution for panels and automation gear.