Eaton STS367ND3 Shunt Trip Safety Switch - UL Listed
Part Number: STS367ND3
Quick Summary
STS367ND3 shunt trip safety switch provides rapid, fail-safe disconnect for electrical control circuits in industrial settings. Facilities often contend with nuisance trips, costly downtime, and safety compliance challenges when panel protection is inadequate. UL Listed and cUL Certified with a NEMA 12/NEMA 3R enclosure give robust safety and environmental protection for harsh industrial environments. Its 800A rating and 120 Vac coil align with common motor control center designs, while its rugged construction supports easy integration and maintenance. This translates to improved uptime and easier procurement for plant owners and maintenance teams. It also supports safe, compliant shutdowns across distributed automation networks.
Product Information
Extended Description
STS367ND3 Eaton: Eaton shunt trip safety switch, 800 A, Three-pole, 600 Vac, 250 Vdc, 120 Vac, NEMA 12, NEMA 3R, Fusible, 600 V
Product Name
Eaton shunt trip safety switch
Catalog Number
STS367ND3
UPC
786685829777
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 12, NEMA 3R
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 - STS367ND3
Feature one: amperage rating of 800A. Business Impact: supports handling high-load motor starters and distribution feeders without compromising safety, reducing overload risk and unnecessary device upgrades. Application: ideal for heavy-duty panel protection in industrial plants, machine shops, and process facilities. Feature two: coil voltage of 120 Vac. Business Impact: enables control circuits to activate the safety switch reliably from standard control voltages, simplifying wiring and reducing miswiring risks. Application: retrofit into existing control panels with standard AC control logic. Feature three: voltage rating of 600 Vac and 250 Vdc; Operating range reduces the need for multiple devices. Application: cross-voltage compatibility with feeders and DC control circuits. Feature four: enclosure rated to NEMA 12 and NEMA 3R; Business Impact: environmental protection for indoor and outdoor installations, minimizing enclosure modifications. Application: outdoor MCCs, damp indoor spaces, washdown areas. Feature five: three-pole configuration with fusible protection; Business Impact: ensures controlled disconnection and safe short-circuit isolation, reducing arc flash risk. Application: main or feeder protection in motor control centers. Feature six: physical size and weight of 12.43 in depth, 71.72 in height, 29.54 in width, 170 lb; Business Impact: rugged, durable footprint supports long service life in demanding environments. Application: panel retrofits and new installations with space planning in mind. Warranty and certifications reinforce value, enabling predictable maintenance budgets and compliance in industrial settings.
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FAQs
STS367ND3 is a three-pole shunt trip safety switch designed for NEMA 12 and NEMA 3R enclosures. It supports retrofit and new installations in motor control centers and distribution panels, enabling straightforward wiring with standard 120 Vac control logic and compatible upstream protection devices.
The device provides an 800A amperage rating, with a 600 Vac maximum voltage and 250 Vdc ratings. The coil operates at 120 Vac, and the unit offers fusible protection, ensuring reliable and safe disconnection under fault conditions in industrial power systems.
Yes. The enclosure ratings of NEMA 12 and NEMA 3R indicate suitability for indoor damp locations and certain outdoor conditions, making it a versatile choice for plant floors, washdown areas, and exposed installations when properly mounted.
STS367ND3 is UL Listed and cUL Certified, providing strong regulatory validation for safety and performance in North American industrial applications, and simplifying shared inspection and procurement processes across facilities.
Warranty terms follow Eaton policy 25-000: one year from installation or eighteen months from shipment, whichever occurs first. This offers predictable coverage for maintenance planning and helps justify lifecycle costs when upgrading plant protection.