Eaton STS368FD32 Shunt Trip Safety Switch - UL Listed
Part Number: STS368FD32
Quick Summary
Eaton STS368FD32 Shunt Trip Safety Switch enables rapid circuit isolation in industrial power systems. In busy facilities, unexpected faults and arc-flash risk demand reliable remote disconnection to protect personnel and critical equipment. This unit carries UL Listed and cUL Certified safety approvals, with NEMA 12 and NEMA 3R enclosures for indoor and outdoor use. Designed for high-current switchgear, it supports 1200 A demand with a 120 V AC control coil, delivering rugged protection and easy integration into existing safety architectures while reducing downtime and maintenance costs.
Product Information
Extended Description
STS368FD32 Eaton: Eaton Heavy Duty Shunt Trip Safety Switch, 1200 A, Three pole, Enclosure- NEMA 12, NEMA 3R, Fusible, 600 Vac, 250 Vdc
Product Name
Eaton Heavy Duty Shunt Trip Safety Switch
Catalog Number
STS368FD32
UPC
786689314187
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
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 - STS368FD32
High-current capability enables a main disconnect at 1200 A for large motor loads and feeders, reducing nuisance trips and improving line reliability; the business impact is enhanced uptime and safer maintenance windows in manufacturing plants. The NEMA 12 and NEMA 3R enclosure ratings clarify suitable deployment in both indoor and outdoor environments, protecting sensitive components from dust and weather while meeting code requirements—application in outdoor substations or protected enclosures becomes straightforward. The 120 VAC coil alongside 600 VAC / 250 VDC voltage ratings supports flexible control wiring and cross-compatibility with common industrial control panels, lowering wiring complexity and enabling faster installations in new or retrofit projects. Fusible protection provides coordinated safety with upstream devices, reducing arc-flash exposure and improving fault-clearing performance in high-energy circuits. The 3-pole arrangement suits 3-phase power systems, streamlining integration with existing switchgear footprints and minimizing space requirements on crowded equipment racks. With UL Listed and cUL Certified compliance, installers gain confidence in code-conformance and long-term reliability, while the compact footprint and documented dimensions aid precise planning and maintenance scheduling.
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FAQs
STS368FD32 is a three-pole fusible shunt trip switch with a 120 VAC control coil and a 600 VAC / 250 VDC voltage rating, designed for use in NEMA 12 and NEMA 3R enclosures. Ensure your bus, panel, and disconnects match the 1200 A rating and compatible mounting footprint; consult Eaton wiring diagrams for panel-mount and wiring configurations to ensure proper integration.
Key specs include a 1200 A amperage rating, three-pole configuration, 120 VAC coil voltage, and voltage ratings of 600 VAC / 250 VDC, with fusible protection. Enclosure options are NEMA 12 or NEMA 3R, suitable for indoor and outdoor use. The unit supports a 23.15 in depth, 47.23 in width, and 72.5 in height footprint with a 405 lb weight, facilitating substantial switchgear integration.
Yes. The 1200 A rating, three-pole arrangement, and fusible protection make STS368FD32 well-suited for large motor feeders and high-energy circuits in manufacturing environments. The NEMA 12/3R enclosure adds rugged protection against dust and moisture, while UL Listed and cUL Certified credentials help ensure compliance with safety standards in industrial facilities.
STS368FD32 is UL Listed and cUL Certified, confirming conformance with recognized safety standards for electrical protection devices. These certifications support regulatory compliance, safer maintenance procedures, and reliability in critical applications, reducing risk during installation and ongoing operation.
The rugged enclosure and fusible protection reduce unexpected outages by delivering fast, reliable disconnection during faults. The 1200 A rating supports scalable power protection for growing loads, while UL/cUL certifications simplify procurement and integration into compliant safety programs. Overall, this translates to lower downtime, safer work environments, and predictable operating costs.