Eaton STS366FW1 Shunt Trip Safety Switch - NEMA 4X
Part Number: STS366FW1
Quick Summary
Eaton shunt trip safety switch automatically disconnects circuits to protect equipment and personnel in industrial control panels. Many panels lack reliable interlock and fail-safe activation, risking outages and downtime. UL Listed and cUL Certified for safety, plus a rugged NEMA 4X enclosure with 304 stainless steel construction supports harsh environments. Designed for 600 A systems with 24 Vac coil and 600 Vac / 250 Vdc ratings, it delivers dependable protection in manufacturing and process facilities. This combination of protection, durability and easy integration makes it a strong choice for safety-focused projects seeking regulatory compliance and long-term operating cost reductions.
Product Information
Extended Description
STS366FW1 Eaton: Eaton shunt trip safety switch, 600 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
STS366FW1
UPC
786685828831
Product Length/Depth
12.43 in
Product Height
62.97 in
Product Width
28.29 in
Product Weight
145 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
600A
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 - STS366FW1
Feature → Business Impact → Application: Three-pole, 600 A amperage rating with a 24 Vac coil enables rapid isolation of heavy loads, reducing arc flash risk and protecting downstream equipment in motor control centers and critical panel assemblies. Application: Ideal for industrial facilities where dependable power control and fast tripping improve safety and uptime. Feature → Business Impact → Application: NEMA 4X enclosure with 304 stainless steel construction delivers corrosion and washdown resistance, extending service life in harsh environments such as food and beverage, chemical processing, and outdoor switchgear installations. Application: Suitable for harsh plants and outdoors where weather resistance and ease of cleaning matter for maintenance budgets. Feature → Business Impact → Application: Fusible protection combined with 600 Vac / 250 Vdc ratings ensures compatibility with both legacy and modern protection schemes, simplifying retrofits and new builds. Application: Supports regulatory compliance and minimizes spare-part complexity in multi-line systems. Feature → Business Impact → Application: UL Listed and cUL Certified safety documentation enhances procurement confidence and supports audits, reducing qualification cycles for safety-critical projects. Application: Accelerates project onboarding and supplier qualification for panel shops and integrators. Feature → Business Impact → Application: Durable, three-pole shunt trip with a 600 A rating integrates easily with PLC and centralized control architectures, improving control reliability and operator responsiveness. Application: Fits standard industrial protection schemes in manufacturing and process industries while enabling remote trip capabilities and clear fault isolation.
Get a Quick Quote for a Eaton STS366FW1
Chat with us on WhatsApp - fast responses guaranteed
Need to speak with someone? We'll call you back within 2 hours during business hours
Interested in Eaton STS366FW1?
Enquire Now
FAQs
STS366FW1 is designed as a three-pole safety switch with a rugged NEMA 4X enclosure (304 stainless steel). It is compatible with standard industrial panel layouts and can be integrated into existing electrical protection schemes using its 600 A rating and 24 Vac coil. For specific mounting dimensions and panel cutouts, refer to the Eaton specification sheet STS366FW1.
Key ratings include 600 A amperage, coil voltage 24 Vac, voltage rating 600 Vac / 250 Vdc, and fusible protection. This makes it suitable for high-current protection in industrial panels and motor control centers while supporting both AC and DC system protection schemes.
Yes. The enclosure is rated NEMA 4X and constructed from 304 stainless steel, providing corrosion resistance and washdown compatibility. This makes the device appropriate for harsh industrial environments and facilities requiring robust protection against the elements.
The unit is UL Listed and cUL Certified, offering recognized safety compliance. These certifications support regulatory audits and procurement decisions in North American markets, particularly for safety-critical panel assemblies.
Plan for standard electrical installation practices for three-pole shunt trip switches, including correct wiring of the 24 Vac coil and connection to control circuits. With its 600 A rating and robust NEMA 4X enclosure, routine inspection for enclosure seals and coil integrity is recommended to maintain reliability and uptime in manufacturing environments.