Eaton STS367FW14 Shunt Trip Safety Switch - NEMA 4X
Part Number: STS367FW14
Quick Summary
Eaton shunt trip safety switch provides fast, fail-safe de-energization for motor control centers and critical industrial equipment. The design simplifies protective interlocking and rapid fault isolation, reducing the risk of arc flash and equipment damage. Operators often struggle with missed trips and inconsistent signaling that cause downtime and safety concerns; this device mitigates that risk with a dedicated 24 Vac coil and a clear alarm interface. It carries UL Listed and cUL Certified marks, and its NEMA 4X enclosure in 304 stainless steel supports rugged, washdown environments. For engineers and buyers, it combines high-current protection with straightforward installation, enabling reliable protection schemes without complex retrofits.
Product Information
Extended Description
STS367FW14 Eaton: Eaton shunt trip safety switch, 800 A, Three pole, 600 Vac, 250 Vdc, Alarm switch, 24 Vac, 1 NO 1 NC, NEMA 4X, 304 stainless steel, Fusible, 600 V
Product Name
Eaton shunt trip safety switch
Catalog Number
STS367FW14
UPC
786685829678
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
UL Listed cUL Certified
Auxiliary contacts
Alarm switch
Enclosure
NEMA 4X
Enclosure material
304 stainless steel
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
Switching Devices Flex Center
Switching Devices Flex Center
Switching Devices Flex Center
Eaton Specification Sheet - STS367FW14
Three-pole construction with an 800 A rating and a 24 Vac coil delivers fast, high-current isolation for motor control centers and switchgear. This enables protective relays to initiate shutdown quickly, reducing fault energy and protecting downstream equipment in MCCs, switchgear fleets, and large industrial drives. The rugged design translates to shorter commissioning cycles and fewer field adjustments after installation. In practice, facilities see improved uptime, fewer nuisance trips, and a clearer path to compliant protection schemes. The product’s 600 Vac and 250 Vdc ratings support versatile feeder configurations, while the 1 NO 1 NC contact configuration and alarm switch provide straightforward monitoring and interlock integration with plant automation systems. Overall, this switch supports safer, more efficient electrical protection with lower total cost of ownership.
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FAQs
Installation should follow the Eaton specifications for a three-pole shunt trip device. Mount the unit in a compliant enclosure, wire the 24 Vac coil to the control circuit, connect the 1 NO 1 NC contacts to the protection interlock, and integrate the alarm switch into the plant monitoring system. Ensure the assembly is UL/cUL compliant and verify proper clearance for the NEMA 4X enclosure.
Yes. The coil voltage is 24 Vac, suitable for standard control circuits, while the device is rated for 600 Vac loads and 250 Vdc. This enables integration with common motor control center configurations and DC feeder applications without requiring transformer or control rewiring.
Ideal for motor control centers, switchgear, and large industrial drives in harsh environments. The 304 stainless steel NEMA 4X enclosure supports washdown and corrosion-prone areas such as food & beverage, chemical processing, and outdoor installations, providing reliable protection and rapid fault isolation where safety and uptime are critical.
The device is UL Listed and cUL Certified, indicating compliance with recognized safety standards. This simplifies regulatory approvals, supplier qualification, and maintenance planning. Coupled with a NEMA 4X enclosure and corrosion-resistant construction, these certifications reinforce reliability in demanding industrial environments.
By delivering fast, reliable shutdown on fault, the STS367FW14 reduces downtime and potential equipment damage, lowering maintenance costs over time. The rugged enclosure and long service life minimize replacement intervals, while straightforward wiring and signaling integration shorten commissioning and update cycles, delivering a favorable total cost of ownership.