Eaton STS366UW1 Shunt Trip Safety Switch - NEMA 4X
Part Number: STS366UW1
Quick Summary
Eaton STS366UW1 shunt trip safety switch protects industrial motor circuits by rapidly interrupting power in case of an abnormal condition. Too often, nuisance trips or delayed responses lead to equipment damage and costly downtime. This unit is cUL certified and UL listed for reliable electrical protection, with a NEMA 4X stainless enclosure suitable for harsh environments. Designed for 600 A circuit protection with a three-pole configuration and a 24 Vac coil, it supports 600 Vac and 250 Vdc systems while withstanding washdowns. For panel builders and integrators, this combination delivers dependable safety performance without compromising install efficiency or service life.
Product Information
Extended Description
STS366UW1 Eaton: Eaton shunt trip safety switch, 600 A, Three-pole, 600 Vac, 250 Vdc, 24 Vac, NEMA 4X, 304 stainless steel, Non-Fusible, 600 V
Product Name
Eaton shunt trip safety switch
Catalog Number
STS366UW1
UPC
786685829388
Product Length/Depth
12.43 in
Product Height
62.97 in
Product Width
28.29 in
Product Weight
140 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
cUL Certified UL Listed
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
Non-Fusible
Voltage rating
600 Vac, 250 Vdc
Switching Devices Flex Center
Switching Devices Flex Center
Switching Devices Flex Center
Eaton Specification Sheet - STS366UW1
Feature → Business Impact → Application: The STS366UW1 delivers 600 A non-fusible protection in a robust 304 stainless steel, NEMA 4X enclosure, reducing arc flash risk and downtime in demanding environments. This translates to safer, compliant panels in food & beverage, water treatment, and manufacturing lines, where washdowns are common and corrosion resistance matters. Application: Install in motor control centers or switchgear where space allows a three-pole footprint and a 12.43 inch depth; the compact profile aids retrofits and upgrades without major enclosure relocations. Feature → Business Impact → Application: The 24 Vac coil with 600 Vac/250 Vdc ratings provides flexible control wiring and safer remote tripping, lowering wiring errors and enabling straightforward integration with PLCs and safety interlocks in automation cells. Application: Suitable for new builds or refurbishments in automation and process plants. Feature → Business Impact → Application: UL Listed and cUL Certified protections support compliance and procurement advantage, reducing vendor risk and accelerating approvals for panel assemblies. Application: Ideal for regulated industries and projects with strict electrical standards. Feature → Business Impact → Application: The sturdy 304 stainless enclosure and 140 lb weight communicate durability and reliability, decreasing maintenance cycles and extending service life in harsh environments. Application: Outdoor or washdown rated installations where robustness is essential.
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FAQs
STS366UW1 requires a three-pole, non-fusible configuration with a 24 Vac coil and 600 Vac/250 Vdc ratings. The enclosure is a 304 stainless steel NEMA 4X, sized to fit a 12.43 in depth, 28.29 in width, and 62.97 in height footprint. Plan for a 140 lb unit in a fixed panel with proper mounting hardware and clearance for maintenance.
Yes. The STS366UW1 carries cUL certification and UL listing, ensuring compliance with common electrical codes. Its NEMA 4X enclosure supports washdown and harsh environments, making it suitable for regulated industries and panel builds requiring recognized safety components.
This shunt trip safety switch is ideal for motor control centers, industrial control panels, and process automation equipment. Its three-pole design, 600 A rating, and rugged stainless enclosure make it well-suited for environments requiring robust protection, quick remote tripping, and resistance to washdown and corrosion.
Eaton provides a warranty policy (25-000) offering one year from installation or eighteen months from shipment, whichever occurs first. For technical support, consult Eaton datasheets and the specification sheet, which confirm installation guidelines and performance expectations for reliability and ROI.
Key ratings include 600 A amperage, 600 Vac and 250 Vdc voltage ratings, and a 24 Vac coil. It is a non-fusible, three-pole device designed to rapidly interrupt power in protective circuits, with a 12.43 in depth, 28.29 in width, and 62.97 in height enclosure.