Eaton STS367NW11 Shunt Trip Safety Switch - NEMA 4X
Part Number: STS367NW11
Quick Summary
Eaton shunt trip safety switch is a three-pole remote-trip device designed to protect motor starters and power circuits in industrial control panels. The design addresses downtime from nuisance trips and slow reset responses by delivering fast, reliable trips. UL Listed and cUL Certified, the unit also features a NEMA 4X stainless-steel enclosure suited for washdown and harsh environments. The combination of 800 A capacity, 24 Vac coil, and 1 NO 1 NC contact configuration supports scalable protection across electrical protection and circuit-control applications. This makes it a practical, future-proof choice for OEMs and maintenance teams seeking robust protection, easy integration, and predictable performance in demanding facilities.
Product Information
Extended Description
STS367NW11 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
STS367NW11
UPC
786685829944
Product Length/Depth
12.43 in
Product Height
71.72 in
Product Width
29.54 in
Product Weight
170 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
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 - STS367NW11
Feature: 800 A amperage rating provides ample headroom for large motor loads. Business Impact: reduces overload risk and limits unplanned maintenance, translating to higher line uptime. Application: suitable for heavy-duty industrial protection in motor control centers and switchgear assemblies. Feature: three-pole architecture ensures simultaneous interruption of all phases. Business Impact: minimizes arc exposure and ensures complete circuit isolation, improving safety and compliance. Application: ideal for 3-phase panel installations and multi-motor drives. Feature: 24 Vac coil enables straightforward integration with standard control circuits. Business Impact: simpler wiring and faster deployment, lowering commissioning time and labor costs. Application: remote-trip control in distributed control systems and safety interlocks. Feature: voltage rating of 600 Vac / 250 Vdc supports mixed-system environments. Business Impact: provides flexibility for hybrid DC/AC protection schemes, reducing component count. Application: versatile for plants with mixed-voltage architectures. Feature: NEMA 4X stainless-steel enclosure and 304 material offer rugged, washdown-ready robustness. Business Impact: improves reliability in harsh or corrosive environments, reducing enclosure maintenance. Application: food & beverage, pharma, and outdoor installations. Feature: 1 NO 1 NC contact configuration adds signaling and alarm capabilities. Business Impact: supports local alarms and remote monitoring without adding hardware. Application: integrated safety signaling in control panels. Feature: built-in alarm switch and fusible protection enhance safety margins. Business Impact: faster fault indication and fault-clearing protection reduce downtime and electrical stress. Application: protective relays, diagnostics, and preventative maintenance programs. Feature: UL Listed and cUL Certified provide North American compliance. Business Impact: simplifies procurement, audits, and vendor qualification. Application: enterprise-level safety compliance across regulated industries.
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FAQs
Begin with appropriate panel clearance and verify wiring compatibility for a three-pole device. Mount the STS367NW11 in a suitable enclosure as a NEMA 4X protected unit, then connect the 24 Vac control coil to the remote-trip circuit and wire the 1 NO 1 NC contacts for alarm/signaling. Ensure proper torque on terminals and verify UL/cUL compliance before energizing. The 800 A rating supports large motor loads, so plan conductor sizing accordingly and follow lockout/tagout procedures during installation.
STS367NW11 is rated for 800 A with a 24 Vac coil. It supports a voltage rating of 600 Vac and 250 Vdc, and a contact configuration of 1 normally open (NO) and 1 normally closed (NC). This combination enables remote-trip control for 3-phase systems while allowing signaling and interlocks to be integrated into existing protection schemes. The device is fusible, adding an extra layer of protection at the circuit level.
Yes. The unit features a NEMA 4X enclosure constructed from 304 stainless steel, designed for washdown and corrosive or challenging environments. This makes it well-suited for industries such as food & beverage, pharmaceuticals, and outdoor installations where exposure to moisture or contaminants is a concern. The rugged enclosure helps minimize maintenance frequency and extend service life in demanding facilities.
STS367NW11 carries UL Listed and cUL Certified marks, ensuring compliance with recognized North American safety standards. These certifications streamline procurement and audit processes, helping suppliers and end users meet regulatory requirements. While the enclosure and material choices contribute to ruggedness, the certifications primarily confirm electrical safety and performance under applicable standards.
Deploying STS367NW11 reduces downtime by enabling fast, reliable remote-tripping for three-phase protection. Its rugged NEMA 4X enclosure and 304 stainless steel construction improve durability in harsh environments, lowering maintenance costs. The 800 A rating supports large motors, potentially lowering panel footprint by consolidating protection, while UL/cUL compliance simplifies procurement and regulator alignment.