Eaton STS367FP31 Shunt Trip Safety Switch - UL Listed
Part Number: STS367FP31
Quick Summary
Eaton shunt trip safety switch is a rapid, remotely initiated shutdown device designed for industrial power systems. It helps protect personnel and critical equipment during faults or maintenance by enabling a controlled isolation of power. The STS367FP31 features a robust painted steel enclosure rated for NEMA 4 environments, and carries cUL Certified and UL Listed markings to support North American safety compliance. With a three-pole configuration and an integrated alarm switch, it aligns with safety interlocks in control panels. Designed for heavy-duty service, its 800 A rating and 600 Vac / 250 Vdc compatibility support demanding applications while ensuring reliable protection. This combination of rugged protection and straightforward installation adds value for industrial protection and equipment safety in your facility.
Product Information
Extended Description
STS367FP31 Eaton: Eaton shunt trip safety switch, 800 A, Three-pole, 600 Vac, 250 Vdc, Alarm switch, 120 Vac, 1 NO-1 NC, NEMA 4, Painted steel, Fusible, 600 V
Product Name
Eaton shunt trip safety switch
Catalog Number
STS367FP31
UPC
786685829609
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 4
Enclosure material
Painted steel
Number Of Poles
Three-pole
Type
Shunt trip safety switch
Amperage Rating
800A
Coil voltage
120 Vac
Protection
Fusible
Voltage rating
600 Vac, 250 Vdc
Contact configuration
1 NO-1 NC
ARMS Enclosed Circuit Breaker
ARMS Enclosed Circuit Breaker
ARMS Enclosed Circuit Breaker
Eaton Specification Sheet - STS367FP31
Feature → Business Impact → Application: The STS367FP31 provides an 800 A amperage rating, enabling rapid isolation of large circuits and reducing potential arc flash exposure during faults, which translates to lower risk and downtime in motor control centers. Application: ideal for high-load switchgear and MCC assemblies requiring fast shutdown and reliable fault response. Feature → Business Impact → Application: The NEMA 4 painted steel enclosure delivers rugged protection against dust, water, and washdown environments, improving uptime in harsh plant zones and outdoor installations. Application: suitable for manufacturing floors, outdoor substations, and equipment pits where rugged enclosure integrity is essential. Feature → Business Impact → Application: The device includes an auxiliary alarm switch (1 NO-1 NC) and a 120 Vac coil, enabling remote signaling and integration with safety interlocks, enhancing control system visibility. Application: panel integration with centralized monitoring and alarm workflows. Feature → Business Impact → Application: Certifications such as cUL Certified and UL Listed provide regulatory confidence and supplier support, streamlining procurement and compliance for regulated industries. Application: essential for facilities pursuing safety certifications and auditable safety programs. Feature → Business Impact → Application: Dimensional and weight specifications (12.43 in depth, 71.72 in height, 29.54 in width, 167 lb) help designers plan mounting and clearances, reducing install risk and field adjustments. Application: system integration in large electrical rooms and retrofit projects where space planning is critical.
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FAQs
Yes. The STS367FP31 is a three-pole shunt trip safety switch designed for integration with typical switchgear and motor control center panels. It supports a 1 NO-1 NC contact configuration and uses a 120 Vac coil, aligning with common control panel wiring practices. When planning installation, verify mounting clearances and clearance for the 167 lb unit to ensure safe handling and service access.
The device offers an 800 A amperage rating, with voltage ratings of 600 Vac and 250 Vdc. It features a 120 Vac coil and an auxiliary alarm switch (1 NO-1 NC). The enclosure is NEMA 4, painted steel, suitable for harsh environments. These specs enable reliable, code-compliant remote shutdown in demanding industrial applications.
This switch is well-suited for industrial power protection in manufacturing plants, power distribution panels, and motor control centers. Its rugged NEMA 4 enclosure and high current rating make it ideal for outdoor or washdown areas, while the alarm contact supports integrated safety signaling and interlocks in process and packaging lines.
The STS367FP31 carries cUL Certified and UL Listed markings, confirming compliance with North American safety standards. Its NEMA 4 enclosure further reinforces suitability for harsh environments. Compliance with these certifications simplifies procurement for regulated facilities and supports audit-ready safety programs.
By enabling rapid remote shutdown and reducing exposure during faults, the STS367FP31 lowers downtime and accelerates fault isolation, contributing to reduced maintenance costs. The integrated alarm switch improves visibility for monitoring systems, helping teams meet safety requirements and realize a faster return on investment through improved uptime and safer operation.