Eaton STS367UD1 Shunt Trip Safety Switch - UL Listed
Part Number: STS367UD1
Quick Summary
Eaton shunt trip safety switch STS367UD1 provides rapid de-energization for safe switchgear operation. This device helps prevent unplanned downtime and reduces arc-flash exposure by delivering a fail-safe interlock triggered by an external 24 Vac coil control. UL Listed and cUL Certified, it also meets NEMA 12 and NEMA 3R enclosure requirements, making it suitable for harsh industrial environments. The unit is designed to integrate with existing protection schemes and simplifies maintenance planning through clear diagnostics and reliable performance. With an 800 A rating and three poles, it is well suited for heavy-duty motor control centers and distribution panels where fast, dependable shutdown is critical for safety and compliance.
Product Information
Extended Description
STS367UD1 Eaton: Eaton shunt trip safety switch, 800 A, Three-pole, 600 Vac, 250 Vdc, 24 Vac, NEMA 12, NEMA 3R, Non-Fusible, 600 V
Product Name
Eaton shunt trip safety switch
Catalog Number
STS367UD1
UPC
786685830025
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
24 Vac
Protection
Non-Fusible
Voltage rating
600 Vac, 250 Vdc
Switching Devices Flex Center
Switching Devices Flex Center
Switching Devices Flex Center
Eaton Specification Sheet - STS367UD1
Selling Policy 25-000 - Distribution and Control Products and Services
Feature: 800 A amperage rating paired with a three-pole configuration. Business Impact: Enables safe, high-capacity protection for large motors and feeders, reducing the risk of cascading faults and unplanned downtime. Application: Ideal for heavy-duty MCCs and power distribution panels in manufacturing environments. Feature: 24 Vac coil control with non-fusible protection. Business Impact: Simplifies control interlocks and improves system reliability by avoiding fusible links that can fail during fault conditions. Application: Works with standard control circuits and external relays used in industrial automation. Feature: 600 Vac and 250 Vdc voltage ratings within a single device. Business Impact: Supports broad AC and DC switching requirements, enabling one protective device to cover multiple circuits. Application: Suitable for mixed-voltage switchgear and panel boards in mixed-load facilities. Feature: NEMA 12 and NEMA 3R enclosure compatibility. Business Impact: Delivers dependable outdoor and harsh-environment performance, reducing enclosure-related maintenance and corrosion risk. Application: Installed in environments with dust, moisture, and temperature variations. Feature: Non-Fusible protection. Business Impact: Reduces replacement time and inventory needs while delivering predictable fault isolation. Application: Fits standard safety circuits and protection schemes in modern switchgear. Feature: Robust physical dimensions and mounting compatibility (12.43 in depth, 71.72 in height, 29.54 in width). Business Impact: Facilitates integration into existing footprints and control cabinets without major rework. Application: Easy retrofit into legacy installations with Eaton or compatible accessories. Industry context: With UL Listed and cUL Certified status, engineers gain confidence in compliance and traceability, while the model’s 800 A rating supports scalable expansion in growing facilities. This combination translates to measurable improvements in uptime, safety, and total cost of ownership.
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FAQs
Install STS367UD1 in a compatible NEMA 12 or NEMA 3R enclosure, wire the 24 Vac coil to the control circuit, and connect the three poles to the load with attention to the 800 A rating. Use the manufacturer’s specification sheet for mounting clearances and interlock wiring to ensure safe, code-compliant operation.
The unit is rated for 800 A with a 24 Vac coil, and it carries voltage ratings of 600 Vac and 250 Vdc. It is a three-pole, non-fusible shunt trip safety switch designed for heavy-duty switchgear applications.
Yes. The STS367UD1 is specified for NEMA 12 and NEMA 3R enclosures, providing protection in dusty, moist, and outdoor environments. This makes it a versatile choice for harsh industrial settings.
STS367UD1 is UL Listed and cUL Certified, offering conformity with global safety standards. These certifications support compliance in regulated environments and help streamline procurement and audits for industrial facilities.
By delivering rapid, reliable de-energization and reducing arc-flash exposure, the STS367UD1 lowers downtime and maintenance intensity, improves worker safety, and simplifies regulatory compliance, contributing to lower total cost of ownership over the equipment’s life cycle.