Eaton STS367NW3 Shunt Trip Safety Switch - NEMA 4X
Part Number: STS367NW3
Quick Summary
Eaton shunt trip safety switch automatically isolates power to protect industrial panels. Operators and engineers often contend with unplanned trips that lead to downtime and safety risks. This unit carries UL Listed and cUL Certified markings and relies on a rugged NEMA 4X stainless enclosure to withstand harsh environments. With an 800 A rating and a remote 120 Vac coil, it integrates seamlessly with switchgear, motor control centers, and protective relays to enhance uptime and safety. It provides 600 Vac / 250 Vdc protection while remaining compatible with common control voltages, delivering a dependable, compliant solution for mission-critical applications.
Product Information
Extended Description
STS367NW3 Eaton: Eaton shunt trip safety switch, 800 A, Three-pole, 600 Vac, 250 Vdc, 120 Vac, NEMA 4X, 304 stainless steel, Fusible, 600 V
Product Name
Eaton shunt trip safety switch
Catalog Number
STS367NW3
UPC
786685829968
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
cUL Certified UL Listed
Enclosure
NEMA 4X
Enclosure material
304 stainless steel
Number Of Poles
Three-pole
Type
Shunt trip safety switch
Amperage Rating
800A
Coil voltage
120 Vac
Protection
Fusible
Voltage rating
600 Vac, 250 Vdc
Switching Devices Flex Center
Switching Devices Flex Center
Switching Devices Flex Center
Eaton Specification Sheet - STS367NW3
800A three-pole construction with a 120 Vac coil, plus 600 Vac / 250 Vdc protections, delivers robust protection for high-demand feeders. This combination enables a fast, decisive trip action that minimizes fault duration and shields downstream equipment from damaging transients. For industrial panels, motor control centers, and switchgear assemblies in manufacturing and process environments, it translates into fewer nuisance trips and safer start-up sequences after maintenance or repair. The NEMA 4X enclosure clad in 304 stainless steel provides corrosion resistance and dependable operation in washdown zones, outdoor locations, and other harsh environments. This durability lowers replacement cycles, reduces maintenance overhead, and keeps performance consistent across shifts. Fusible protection enables protective coordination with upstream fusing schemes, supporting selective tripping and safer isolation. UL Listed and cUL Certified compliance helps meet safety programs and regulatory audits, while straightforward installation benefits from standard control voltages and clear Eaton documentation. Remote shunt-trip capability integrates with existing control logic and BMS interfaces, enabling quick remote shutdowns without direct operator intervention and improving response times in abnormal conditions.
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FAQs
The STS367NW3 features a three-pole construction with an 800 A rating and a 120 Vac control coil, plus protection ratings of 600 Vac and 250 Vdc. It uses a NEMA 4X enclosure in 304 stainless steel, and is UL Listed and cUL Certified. This makes it compatible with standard switchgear, motor control centers, and protection panels while enabling straightforward wiring and reliable remote trip integration.
Ideal for motor control centers, switchgear assemblies, and critical protection panels, the STS367NW3 provides reliable remote trip capability and fusible protection. Its high current rating and rugged enclosure suit environments requiring durable, compliant protection against faults, transients, and safety hazards, helping minimize downtime and improve overall plant protection strategies.
This shunt trip safety switch is UL Listed and cUL Certified, affirming compliance with North American safety standards. The NEMA 4X stainless steel enclosure adds environmental protection for washdown and outdoor locations. Together with the fusible protection and industrial ratings (600 Vac, 250 Vdc, 120 Vac coil), these certifications support audits and customer specifications for critical electrical protection equipment.
By delivering a fast, decisive remote trip at up to 800 A, the device minimizes fault duration and reduces the risk of cascading outages. The 304 stainless steel NEMA 4X enclosure resists corrosion in harsh environments, lowering maintenance needs. Remote coil operation simplifies integration with existing control logic, helping maintenance teams coordinate protection across panels and processes with greater confidence.
Ensure the control system can supply a 120 Vac coil and coordinate with upstream protection schemes for selective tripping. Verify space for a three-pole unit and verify compatibility with 600 Vac / 250 Vdc protection requirements. Refer to the Eaton specification sheet for wiring diagrams and mounting guidelines to streamline commissioning and avoid wiring errors during panel builds.