Eaton STS367FD11 Shunt Trip Safety Switch - cUL Listed
Part Number: STS367FD11
Quick Summary
STS367FD11 shunt trip safety switch from Eaton provides fast circuit interruption for emergency shutdown in motor control centers. Operators struggle with unreliable trip timing and the risk of non-compliance when protecting personnel and assets. This model is cUL Certified and UL Listed, with enclosure ratings NEMA 12 and NEMA 3R to withstand demanding environments. It integrates easily with standard control wiring, delivering reliable protection while helping you meet safety and regulatory goals. For maintenance teams and procurement leaders, this adds predictable performance, longer service life, and lower total cost of ownership in robust electrical protection devices for modern plant automation.
Product Information
Extended Description
STS367FD11 Eaton: Eaton shunt trip safety switch, 800 A, Three-pole, 600 Vac, 250 Vdc, Alarm switch, 24 Vac, 1 NO-1 NC, NEMA 12, NEMA 3R, 600 V, Fusible
Product Name
Eaton shunt trip safety switch
Catalog Number
STS367FD11
UPC
786685829487
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
cUL Certified UL Listed
Auxiliary contacts
Alarm switch
Enclosure
NEMA 12, NEMA 3R
Number Of Poles
Three-pole
Type
Shunt trip safety switch
Amperage Rating
800A
Coil voltage
24 Vac
Protection
Fusible
Voltage rating
600 Vac, 250 Vdc
Contact configuration
1 NO-1 NC
High current handling and safety performance: The 800 A rating enables direct interruption of large motor loads, reducing fault energy and arc flash exposure. Business impact includes shorter downtime, improved equipment protection, and greater worker safety in critical applications such as conveyors, pumps, and presses. This is essential for reliable emergency shutdown in industrial settings and supports compliance with protective-coordination practices. Application: motor control centers and large MCC feeders benefit from quicker, more predictable protection without cascading failures. Coil voltage and control-system compatibility: The 24 Vac coil aligns with common plant control logic, simplifying control wiring and reducing installation risk. The result is lower installation labor and fewer wiring errors, translating to faster project timelines and more dependable performance in batch lines or packaging machinery. Application: retrofit projects and new builds where 24 Vac control circuits are standard. Enclosure versatility and environmental resilience: NEMA 12 and NEMA 3R ratings enable indoor protective service or outdoor/ semi-indoor installations, reducing the need for additional enclosures. Business value includes space savings, modularity, and fewer parts to stock for maintenance. Application: outdoor substations, control cabinets, and clean rooms where environmental exposure is a concern. Comprehensive protection and signaling: The device offers a 1 NO-1 NC contact configuration along with an alarm switch, enabling secondary signaling and interlock schemes. This improves fault diagnosis, remote monitoring, and safety interlocks in automated lines. Application: safety interlock integration in automated presses and processing lines. Regulatory alignment and lifecycle reliability: cUL Certified and UL Listed certification underpin regulatory compliance for industrial safety devices, while fusible protection adds a layer of fault-tolerant protection. Business impact includes reduced compliance risk, predictable maintenance windows, and extended service life. Application: any plant seeking robust, code-compliant protective devices with long service life and straightforward maintenance.
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FAQs
Installation starts with ensuring proper panel fit for a three-pole device and mounting in a suitable enclosure. Connect the 24 Vac coil to the control circuit, wire the 1 NO-1 NC contacts for supervisory signaling, and integrate the alarm switch for optional fault signaling. Follow standard safety practices and Eaton wiring diagrams to minimize commissioning time and ensure proper tripping coordination with upstream devices.
STS367FD11 is rated for 800 A with a 24 Vac coil voltage. It provides protection for up to 600 Vac and 250 Vdc in a fusible configuration, enabling safe energization and rapid interruption of large motor loads. This combination supports compatibility with typical plant control logic while meeting industrial safety requirements.
Yes. The device is designed for NEMA 12 and NEMA 3R enclosures, making it appropriate for indoor dusty environments as well as outdoor or semi-outdoor installations where weather resistance and enclosure protection are needed. This versatility reduces the need for additional protective housings and simplifies site compliance.
STS367FD11 carries cUL Certified and UL Listed certifications, indicating adherence to recognized safety and performance standards for electrical protection devices. These certifications help ensure regulatory compliance, safer operation in industrial settings, and smoother acceptance in procurement processes and audits.
The STS367FD11 provides rapid trip capability, reduced downtime, and improved worker safety, which translates to lower maintenance costs and reduced arc-flash exposure. The 800 A rating and robust enclosure compatibility minimize replacement frequency and spare-part needs, delivering a favorable total cost of ownership over the device lifecycle in high-load industrial environments.