Eaton STS367NW1 Shunt Trip Safety Switch - UL Listed
Part Number: STS367NW1
Quick Summary
Eaton shunt trip safety switch quickly isolates power in large industrial panels, reducing fault exposure and protecting personnel during maintenance. For engineers and maintenance teams, unclear trip conditions, nuisance tripping, and slow diagnostics translate into wasted hours and higher operating costs. UL Listed and cUL Certified provide immediate regulatory confidence, while a NEMA 4X enclosure of 304 stainless steel resists washdowns, corrosion, and harsh wash-down environments. With 800 A amperage rating and 24 Vac coil voltage, STS367NW1 supports plug-and-play compatibility, easier field wiring, and reliable coordination with protective relays and motor starters, and consistent performance under temperature cycling in tough conditions.
Product Information
Extended Description
STS367NW1 Eaton: Eaton shunt trip safety switch, 800 A, Three-pole, 600 Vac, 250 Vdc, 24 Vac, NEMA 4X, 304 stainless steel, Fusible, 600 V
Product Name
Eaton shunt trip safety switch
Catalog Number
STS367NW1
UPC
786685829937
Product Length/Depth
12.43 in
Product Height
71.72 in
Product Width
29.54 in
Product Weight
170 lb
Warranty
Eaton Selling Policy 25-000, one (1) year from the date of installation of the Product or eighteen (18) months from the date of shipment of the Product, whichever occurs first.
Certifications
UL Listed cUL Certified
Enclosure
NEMA 4X
Enclosure material
304 stainless steel
Number Of Poles
Three-pole
Type
Shunt trip safety switch
Amperage Rating
800A
Coil voltage
24 Vac
Protection
Fusible
Voltage rating
600 Vac, 250 Vdc
Switching Devices Flex Center
Switching Devices Flex Center
Switching Devices Flex Center
Eaton Specification Sheet - STS367NW1
Selling Policy 25-000 - Distribution and Control Products and Services
Feature: 800 A, three-pole configuration provides robust fault isolation for large power circuits. Business impact: This translates to faster protective action, reduced arc flash exposure, and lower maintenance costs in critical lines. Application: Ideal for motor control centers and distribution panels where high-current safety switching is routine. This design also facilitates better coordination with upstream breakers and downstream protective relays, enhancing overall system reliability in industrial facilities. Feature: 24 VAC coil voltage supports direct integration with standard control circuits, enabling seamless automation and remote signaling. Business impact: Simplifies wiring, reduces control panel complexity, and accelerates fault-response times. Application: Perfect for control room interfaces, remote signaling, and plug-and-play protection in modern automation schemes. Feature: 304 stainless steel enclosure with a NEMA 4X rating delivers corrosion resistance and washdown performance. Business impact: Extends service life in challenging environments such as food & beverage, water treatment, and chemical processing, lowering replacement cycles. Application: Outdoor or harsh indoor installations where sanitation and cleanliness are critical. Feature: UL Listed and cUL Certified provide regulatory alignment and easier procurement. Business impact: Improves compliance reporting, risk management, and supplier qualification. Application: Specified in facilities with strict safety standards and in large-scale panel assemblies. Feature: Fusible protection and multi-volt capability (600 VAC, 250 VDC) cover diverse power architectures. Business impact: Reduces the need for additional protective devices and simplifies system design. Application: Versatile protection for mixed AC/DC distribution networks within switchgear and motor control centers. Feature: Durable build and substantial footprint (12.43 in depth, 71.72 in height, 29.54 in width, 170 lb) support rugged installation and stable mounting. Business impact: Minimizes vibration-induced wear and ensures reliable performance in demanding environments. Application: Large industrial panels and control enclosures where stability and longevity matter.
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FAQs
The STS367NW1 is designed for three-pole configurations with a rugged NEMA 4X enclosure. Mounting requires proper surface or back-plate hardware in a clean, ventilated cabinet. Wiring should follow the coil control circuit (24 VAC) and the line/load connections per the Eaton specification sheet, ensuring secure terminal connections and correct phasing to avoid nuisance trips. Field wiring should use appropriately rated cables and protective conduits to maintain environmental protection and reliability over time.
STS367NW1 offers an 800 A amperage rating with a voltage rating of 600 VAC and 250 VDC, plus a 24 VAC coil. This combination supports high-current protection for AC and DC control circuits, enabling coordinated shutoff in motor control centers and large switchgear. The fusible protection option adds an extra layer of protection for feeders, while still allowing rapid interruption under fault conditions.
Yes. The unit uses a 304 stainless steel enclosure with a NEMA 4X rating, giving excellent resistance to washdowns, moisture, and corrosion. This makes it well-suited for food processing, water treatment, chemical plants, and other environments where sanitation and durability are critical alongside electrical protection.
The STS367NW1 is UL Listed and cUL Certified, providing regulatory credibility and broad acceptance in North American markets. These certifications simplify procurement, ensure compliance with safety standards for electrical protection devices, and support qualification in safety-related specifications across industrial facilities.
By combining high-current protection (800 A) with robust enclosure protection (NEMA 4X), standard 24 VAC control wiring, and versatile voltage ratings (600 VAC/250 VDC), the STS367NW1 reduces panel complexity, shortens commissioning times, and improves uptime. The result is safer operation, easier maintenance, and a clearer path to regulatory compliance in large-scale motor control and switchgear applications.