Eaton STS368ND3-1C00 Shunt Trip Safety Switch - UL Listed
Part Number: STS368ND3-1C00
Quick Summary
Eaton STS368ND3-1C00 shunt trip safety switch is a high-capacity protective device designed to interrupt power in large motor and switchgear assemblies. This solution provides fast, reliable overcurrent protection essential for maintaining uptime in manufacturing, processing, and utility-scale equipment. Engineers often struggle to balance rapid fault clearance with safe control-system coordination, especially in high-load panels and critical processes. With UL Listed and cUL Certified ratings and a rugged NEMA 12/NEMA 3R enclosure, it meets demanding safety and installation standards. By combining a 1200 A rating with a 600 Vac / 250 Vdc voltage profile and a 120 Vac coil, it delivers robust protection while simplifying procurement and maintenance for industrial facilities.
Product Information
Extended Description
STS368ND3-1C00 Eaton: Eaton shunt trip safety switch, with AFGF relay, 1200 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
STS368ND3-1C00
UPC
786689369712
Product Length/Depth
23.15 in
Product Height
72.5 in
Product Width
47.23 in
Product Weight
405 lb
Certifications
UL Listed cUL Certified
Enclosure
NEMA 12, NEMA 3R
Number Of Poles
Three-pole
Type
Shunt trip safety switch w/ AFGF relay
Amperage Rating
1200A
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 - STS368ND3-1C00
High-current three-pole design with 1200 A rating and fusible protection ensures safe interruption of large motor loads, reducing arc flash risk and enabling proper coordination with upstream breakers in complex power distributions. This translates to shorter downtime during faults and easier compliance with industrial safety standards. The 120 Vac coil alongside a 600 Vac / 250 Vdc voltage profile allows seamless integration with standard control circuits, simplifying control wiring and reducing installation time. The integrated AFGF relay delivers reliable shunt-trip activation, ensuring fast, predictable tripping under abnormal conditions and improving overall plant safety. NEMA 12 and NEMA 3R enclosures provide versatile indoor and outdoor installation options, protecting the switch from dust, moisture, and environmental contaminants while maintaining performance in demanding environments. UL Listed and cUL Certified status reinforces customer confidence, supporting audit readiness and procurement approvals. The device’s large footprint and 23.15 in depth, 72.5 in height, and 47.23 in width underscore its suitability for heavy-duty panels, where robust protection and service access are essential. Compatible with Eaton’s Switching Devices Flex Center ecosystem and supported by official datasheets and media, it streamlines sourcing, installation, and long-term maintenance for high-volume projects.
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FAQs
Begin by confirming panel suitability and ensuring proper clearance for a 405 lb device. Mount the unit securely to a suitable framework, connect the 120 Vac coil to the control circuit, and wire the AFGF relay to enable the shunt-trip function. Follow the Eaton specification sheet for sequencing, fuse requirements, and protective grounding to ensure compliant, reliable operation in indoor or outdoor environments.
The switch is rated for 1200 A with a three-pole configuration, coil voltage of 120 Vac, and a voltage rating of 600 Vac / 250 Vdc. It uses fusible protection and is designed for NEMA 12 and NEMA 3R enclosures, suitable for high-current motor control and process protection in demanding panels.
Yes. The UT-rated enclosure options (NEMA 12 for indoor environments and NEMA 3R for outdoor use) along with UL Listed and cUL Certified approvals make it appropriate for rugged motor control centers and industrial process applications needing reliable fault isolation and environmental resilience.
The unit carries UL Listed and cUL Certified marks, signaling compliance with key North American safety standards and ease of audit and installation in certified facilities or regulated industries.
Shunt-trip protection enables rapid fault isolation, reducing downtime and potential damage to equipment. Its integration with standard control circuits simplifies wiring and reduces maintenance complexity, while UL/cUL certifications support long-term compliance. Overall, expect improved safety, faster incident response, and lower total cost of ownership in high-current panel applications.