Eaton STS367UD14 Shunt Trip Safety Switch - UL Listed

Part Number: STS367UD14
Manufacturer
Eaton
Part number
STS367UD14

Quick Summary

The Eaton shunt trip safety switch automates emergency shutdown in electrical panels and motor control centers, delivering reliable protection where human access is a critical risk. Operators and technicians struggle with unexpected power trips during maintenance; this device minimizes that risk by tripping instantly on fault signals. UL Listed and cUL Certified, it also comes in a rugged NEMA 12/3R enclosure, ensuring durable performance in demanding industrial surroundings. With an 800 A rating and a 24 Vac coil, the STS367UD14 provides scalable protection for large power circuits, while the 1 NO 1 NC auxiliary and alarm contacts support fast interlocks and visibility. This combination supports compliance efforts and improves uptime for critical manufacturing processes.

Product Information

Extended Description

STS367UD14 Eaton: Eaton Shunt trip safety switch, 800 A, 1NO/1NC auxiliary contact and 1NO/1NC alarm switch, Coil V: 24 Vac, NEMA 12/3R, 600 V, Three-pole, Non-fusible
Product Name
Eaton shunt trip safety switch
Catalog Number
STS367UD14
UPC
786685830049
Product Length/Depth
12.43 in
Product Height
71.72 in
Product Width
29.54 in
Product Weight
158 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
Auxiliary contacts
Auxiliary contact
Enclosure
NEMA 12, NEMA 3R
Number Of Poles
Three-pole
Type
Shunt trip safety switch
Amperage Rating
800A
Coil voltage
24 Vac
Protection
Non-fusible
Voltage rating
600 V
Contact configuration
1 NO 1 NC
The 800 A amperage rating is engineered to handle high-current feeders without nuisance trips, delivering precise protection for large panels and reducing downstream component stress. In practice, this lowers maintenance costs and minimizes unplanned downtime in heavy manufacturing environments. The 24 Vac coil integrates with common plant control logic, enabling straightforward wiring with existing control circuits and enabling remote signaling for quicker fault isolation. The rugged enclosure options of NEMA 12 and NEMA 3R protect the internal contacts in dusty, damp, or outdoors environments, improving reliability and extending service life in harsh plants. The three-pole, non-fusible design with 600 V rating supports high-energy circuits while permitting clean isolation during maintenance, reducing arcing risk and improving operator safety. With 1 NO 1 NC auxiliary contacts and an alarm contact, you gain enhanced interlocking capabilities and actionable fault indication, streamlining safety interlocks and maintenance workflows. Eaton’s system compatibility ensures easy integration with other safety devices and standard-sized control panels, which can shorten installation time and lower total cost of ownership. In practice, these features translate to measurable gains in uptime, compliance confidence, and overall safety program performance in process industries and power-intensive facilities.

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FAQs

Install the STS367UD14 as a three-pole, non-fusible safety switch with a 24 Vac coil, ensuring proper clearance for the NEMA 12/3R enclosure. Plan for 1 NO 1 NC auxiliary and alarm contacts wiring to support interlocks, and verify compatibility with existing panel buses and feeder wiring to prevent voltage drop or overheating during tripping.
Key specs include an 800 A amperage rating, 24 Vac coil voltage, 600 V voltage rating, and a three-pole configuration. The device is non-fusible and provides 1 NO 1 NC auxiliary with an alarm circuit, enabling fast interlock signaling and clear fault indication for safe shutdown in high-energy circuits.
Yes. The unit’s NEMA 12/3R enclosure protects against dust and moisture, making it suitable for indoor industrial panels and certain outdoor or damp locations when properly installed. The rugged construction supports continuous operation in demanding facilities while maintaining reliable tripping performance for motor control centers.
The STS367UD14 is UL Listed and cUL Certified, confirming compliance with recognized safety standards. While it does not specify CE or SIL here, the combination of UL/cUL certification and robust enclosure protection supports regulatory and safety program requirements in many industrial environments.
Maintenance benefits stem from reduced nuisance trips and clearer fault signaling via the auxiliary and alarm contacts, which aids quick diagnostics. The durable enclosure and high current rating contribute to longer service intervals, lower replacement costs, and improved uptime, delivering a favorable total cost of ownership for safety-critical processes.