Eaton STS367UP3 Shunt Trip Safety Switch - UL Listed
Part Number: STS367UP3
Quick Summary
Eaton STS367UP3 shunt trip safety switch provides reliable overcurrent protection for large motor control centers. Engineers often fight nuisance trips and time-consuming fault isolation that disrupts production. This unit carries UL Listed and cUL Certified marks, with a rugged NEMA 4 painted steel enclosure for demanding environments. Designed to integrate with standard Eaton protection equipment and control panels, it supports reliable, code-compliant operation. It's ideal for motor control centers, distribution panels, and process automation environments. The 120 Vac coil and three-pole design deliver precise control while meeting 600 Vac / 250 Vdc protection thresholds. Its compact wiring footprint and standardized mounting reduce installation time and commissioning risk.
Product Information
Extended Description
STS367UP3 Eaton: Eaton shunt trip safety switch, 800 A, Three-pole, 600 Vac, 250 Vdc, 120 Vac, NEMA 4, Painted steel, Non-Fusible, 600 V
Product Name
Eaton shunt trip safety switch
Catalog Number
STS367UP3
UPC
786685830148
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
UL Listed cUL Certified
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
Non-Fusible
Voltage rating
600 Vac, 250 Vdc
ARMS Enclosed Circuit Breaker
ARMS Enclosed Circuit Breaker
ARMS Enclosed Circuit Breaker
Selling Policy 25-000 - Distribution and Control Products and Services
Feature: 800 A amperage rating in a three-pole, non-fusible design. This configuration delivers rapid, safe disconnection during fault events, mitigating arc flash exposure and reducing wear on upstream breakers. Business Impact: Improves protection margins for heavy motors and large conveyors, lowers nuisance trips, and supports predictive maintenance by offering clear fault signals through the built-in coil. Application: Ideal for motor control centers, discontinuous duty panels, and heavy distribution gear in steel, paper, and metal fabrication facilities. Feature: Coil voltage rated at 120 Vac with a broad voltage rating of 600 Vac / 250 Vdc. Business Impact: Simplifies control wiring and improves compatibility with common plant control voltages. Application: Fits standard control circuits in process automation and machine rooms. Feature: NEMA 4 painted steel enclosure. Business Impact: Weather-resistant protection reduces corrosion risk in outdoor or wash-down environments, lowering maintenance. Application: Suitable for plant floors, outdoor switchgear, and wash-down areas. Feature: UL Listed and cUL Certified. Business Impact: Ensures regulatory compliance and easier procurement with audit-ready documentation. Application: Appropriate for North American installations in regulated industries. Feature: Standard mounting footprint and compatibility with Eaton protection lineup. Business Impact: Streamlines integration with existing panels and reduces retrofit cost. Application: Retrofit projects and new builds in electrical distribution.
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FAQs
STS367UP3 is a three-pole, non-fusible switch rated at 800 A with a NEMA 4 painted steel enclosure. Typical dimensions include a length/depth of 12.43 in, height of 71.72 in, and width of 29.54 in, with an approximate weight of 158 lb. Ensure your panel cutouts and mounting studs align with Eaton’s standard protection equipment footprints to facilitate straightforward installation.
The STS367UP3 is designed to interrupt fault currents up to 800 A in a three-pole configuration and remains non-fusible for reliable, immediate disconnection. Its 120 Vac coil is coordinated with 600 Vac and 250 Vdc line ratings, enabling rapid and safe shutdown during startup transients and fault events. This helps limit arc exposure and protects downstream equipment.
Yes. The unit features a NEMA 4 enclosure built from painted steel, providing weather resistance and protection against dust, water ingress, and wash-down environments. This makes it suitable for plant floors, external installations, and areas requiring robust enclosure protection in challenging conditions.
The STS367UP3 carries UL Listed and cUL Certified marks, confirming compliance with recognized safety standards. Eaton provides a warranty policy of one year from installation or eighteen months from shipment, whichever comes first, ensuring coverage for manufacturing defects and early-life issues while you validate long-term performance.
By delivering reliable 800 A protection with quick, safe shutdown, the STS367UP3 reduces unplanned downtime, lowers maintenance costs, and minimizes arc-flash exposure for personnel. Its compatibility with existing Eaton protection equipment simplifies retrofits and future upgrades, contributing to faster commissioning, improved regulatory compliance, and overall lower total cost of ownership in large facilities.