Eaton STS367FW3 Shunt Trip Safety Switch - UL Listed
Part Number: STS367FW3
Quick Summary
STS367FW3 shunt trip safety switch provides fast, remote-tripping protection for three-pole switchgear and control panels. In real-world systems, downtime and safety hazards rise when protective devices fail to trip quickly or tolerate harsh environments. UL Listed and cUL Certified with a NEMA 4X enclosure, plus 304 stainless steel construction, ensures dependable performance in washdown areas and exposed installations. With an 800 A amperage rating and versatile 600 Vac / 250 Vdc / 120 Vac coil ratings, this device scales across large feeders while meeting code requirements. Installed alongside compatible accessories, it supports compliance, reduces maintenance costs, and improves overall plant reliability — a must for modern industrial automation and safety programs.
Product Information
Extended Description
STS367FW3 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
STS367FW3
UPC
786685829685
Product Length/Depth
12.43 in
Product Height
71.72 in
Product Width
29.54 in
Product Weight
167 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
120 Vac
Protection
Fusible
Voltage rating
600 Vac, 250 Vdc
Feature: Three-pole shunt trip design provides full-phase isolation and reliable remote trip capability. Business Impact: Minimizes arc flash exposure and accelerates protective actions, improving plant safety and uptime. Application: Ideal for motor control centers (MCCs) and safety interlocks in manufacturing lines. Feature: 800 A amperage rating with 600 Vac / 250 Vdc / 120 Vac coil voltages. Business Impact: Supports large feeders and diverse control circuits while maintaining fast response, aiding compliance with industrial standards. Application: Heavy electrical distribution panels in process facilities and packaging lines. Feature: NEMA 4X enclosure in 304 stainless steel. Business Impact: Superior corrosion resistance and durability in washdown or outdoor environments, reducing maintenance cycles. Application: Food & beverage, chemical plants, and outdoor substations. Feature: Fusible protection and robust construction. Business Impact: Improves selective coordination and fault containment, lowering total ownership costs. Application: High-energy circuits requiring added protection at the device level. Feature: Remote and easy installation with compatible Eaton accessories. Business Impact: Shortens commissioning time and simplifies retrofits in existing plant infrastructures. Application: Modernizing legacy switchgear while maintaining safety and regulatory alignment.
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FAQs
When installing the STS367FW3, ensure a three-pole mounting arrangement that aligns with existing MCC layout. Use the 304 stainless steel NEMA 4X enclosure for rugged environments, provide proper clearance for wiring and heat dissipation, and verify coil voltage compatibility (120 Vac) with your control circuit. Plan for remote trip wiring and fuse protection as part of a complete protection scheme to minimize downtime and ensure reliable operation.
The STS367FW3 is rated for up to 800 A and handles 600 Vac with 250 Vdc and 120 Vac coil configurations, enabling rapid isolation of faulted circuits. Its fusible protection adds an extra layer of fault containment, helping to limit arc energy and protect downstream equipment. In practice, this translates to faster clear times and improved overall system safety in motor drives and large switchgear.
Yes. The device is UL Listed and cUL Certified, ensuring compliance with major North American safety standards. The NEMA 4X enclosure and 304 stainless steel construction further support durability in challenging environments, meeting requirements for corrosion resistance and washdown suitability in industrial facilities.
Best suited for motor control centers, switchgear, and harsh-environment control panels, the STS367FW3 provides remote tripping protection for large feeders. Its three-pole design, high current rating, and compatible coil voltage make it a reliable choice for process plants, food & beverage facilities, and chemical processing where safety and uptime are critical.
Eaton offers a one-year warranty from installation or eighteen months from shipment, whichever occurs first. Regular inspection of the enclosure for corrosion, checking wiring integrity, and testing remote-trip functionality are recommended. Given the 304 stainless steel NEMA 4X enclosure, maintenance cycles can be extended in harsh environments, reducing total cost of ownership.