Eaton STS367UD3 Shunt Trip Safety Switch - UL Listed
Part Number: STS367UD3
Quick Summary
The Eaton shunt trip safety switch STS367UD3 provides rapid electrical isolation for industrial control panels. This design emphasizes reliable fault response to protect personnel and equipment, reducing exposure to arc flash and unintended energization.UL Listed and cUL Certified certifications reinforce regulatory compliance, while the NEMA 12 and NEMA 3R enclosure options enable versatile installation in dusty, wet, or outdoor environments. In practice, this device combines high-current capability with robust enclosure protection to support safe, compliant panel protection and streamlined maintenance. For engineers and procurement teams, the STS367UD3 delivers strong value through improved safety documentation, faster fault response, and easier integration into existing electrical protection architectures.
Product Information
Extended Description
STS367UD3 Eaton: Eaton shunt trip safety switch, 800 A, Three-pole, 600 Vac, 250 Vdc, 120 Vac, NEMA 12, NEMA 3R, Non-Fusible, 600 V
Product Name
Eaton shunt trip safety switch
Catalog Number
STS367UD3
UPC
786685830056
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 12, NEMA 3R
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
Feature → Business Impact → Application: The STS367UD3 delivers 800 A capacity in a three-pole, non-fusible configuration, enabling reliable isolation of heavy industrial feeders and motor circuits in a single device, reducing the need for multiple breakers and simplifying maintenance planning. This translates to lower installed cost and faster service when faults occur in harsh environments such as manufacturing floors or outdoor substations. Application: motor control centers, large pump or fan circuits, and heavy-duty process lines that require swift, controlled shutdowns. Feature → Business Impact → Application: Coil voltage of 120 Vac simplifies control wiring and reduces the risk of control-side faults triggering unintended trips, enabling safer integration with standard PLC and relay panels. Application: control cabinets with centralized 120 Vac control power. Feature → Business Impact → Application: NEMA 12 and NEMA 3R enclosure ratings provide environmental protection against dust, water, and corrosion, extending service life in rugged settings and reducing unscheduled downtime. Application: outdoor or wet-dust areas, wash-down zones, and exposed electrical rooms. Feature → Business Impact → Application: 158 lb weight and substantial physical size improve mechanical stability and mounting integrity, minimizing vibration-related wear and ensuring consistent trip performance in dynamic environments. Application: retrofit projects within existing MCCs or new builds requiring robust protection. Feature → Business Impact → Application: Comprehensive spec access via Eaton datasheets and the STS367UD3 catalog supports faster ordering, engineering validation, and smoother installation planning for panel builders and procurement teams.
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FAQs
The STS367UD3 is a three-pole, non-fusible shunt trip switch designed for industrial control panels and motor control centers. It is compatible with NEMA 12 and NEMA 3R enclosure environments and supports mounting within standard MCC frames. For installation, verify clearance for a 12.43 inch depth, 71.72 inch height, and 29.54 inch width, and plan for 120 Vac control wiring to the coil.
The device is rated for 800 A with a voltage rating of 600 Vac and 250 Vdc, and it uses a 120 Vac coil. It is non-fusible, enabling direct electrical isolation when a fault is detected. This combination supports high-current applications while maintaining a simple control interface with standard 120 Vac control circuits.
Environments with dust, moisture, or outdoor exposure benefit from the NEMA 12/3R enclosure ratings. The unit’s robustness suits outdoor substations, wash-down areas, and rugged manufacturing floors. Its compact assembly and 158 lb weight provide stable mounting, reducing vibration-related wear in dynamic industrial settings.
The STS367UD3 carries UL Listed and cUL Certified certifications, ensuring compliance with widely adopted safety standards. This helps panel builders meet regulatory requirements when integrating emergency isolation and protective switching into electrical protection and control systems.
Eaton provides a one-year warranty from installation or eighteen months from shipment (whichever occurs first). Comprehensive documentation includes the Eaton Specification Sheet for STS367UD3 and a product datasheet, facilitating installation planning, spare-part selection, and long-term maintenance planning for reliability-centered maintenance programs.