Eaton STS366UP1 Shunt Trip Safety Switch - UL Listed
Part Number: STS366UP1
Quick Summary
The Eaton STS366UP1 shunt trip safety switch delivers reliable remote tripping for 600 A, three-pole panels in industrial environments. Engineers often face the challenge of enabling fast, fail-safe shutdown without compromising panel access or service life. UL Listed and cUL Certified provide clear safety and regulatory confidence, while the NEMA 4 painted-steel enclosure protects against dust, moisture, and outdoor exposure. With a 24 Vac coil and a voltage rating of 600 Vac / 250 Vdc, this device integrates cleanly into existing protection schemes, helping reduce unplanned downtime and support compliance across industrial automation and electrical distribution networks. This combination supports safer, compliant industrial shutdowns.
Product Information
Extended Description
STS366UP1 Eaton: Eaton shunt trip safety switch, 600 A, Three-pole, 600 Vac, 250 Vdc, 24 Vac, NEMA 4, Painted steel, Non-Fusible, 600 V
Product Name
Eaton shunt trip safety switch
Catalog Number
STS366UP1
UPC
786685829296
Product Length/Depth
12.43 in
Product Height
62.97 in
Product Width
28.29 in
Product Weight
140 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
600A
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 - STS366UP1
Feature: 600 A, three-pole shunt trip delivers dependable interrupt capability and coordinated protection with upstream devices. This reduces arc flash exposure, minimizes unplanned outages, and supports safer operation in high-demand industrial environments. Application: ideal for motor control centers, pump and fan panels, and distribution gear in heavy industries. Feature: 24 Vac coil provides flexible control wiring and seamless compatibility with standard plant controls, enabling straightforward integration with existing safety interlocks. Business impact: simplifies control panel routing, speeds commissioning, and reduces field wiring errors. Application: integrates with typical PLC/SCADA safety loops, HVAC drives, and process automation equipment. Feature: Voltage rating of 600 Vac and 250 Vdc supports mixed-voltage circuits in a single device, reducing diversity of protective components. Impact: lowers spare parts inventory, simplifies documentation, and improves change management. Application: suitable where DC control circuits or DC drives exist alongside AC power in conveyors, pumps, and presses. Feature: NEMA 4 enclosure in painted-steel construction provides robust environmental protection against dust, moisture, and washdown. Impact: durable performance in outdoor or harsh indoor environments minimizes field failures and maintenance costs. Application: outdoor switchgear cabinets, food & beverage plants, chemical facilities, and rugged manufacturing floors. Feature: UL Listed and cUL Certified provide regulatory assurance for North American projects and supplier qualification. Impact: accelerates procurement, simplifies audits, and reduces risk during regulatory reviews. Application: critical safety installations in industrial automation, power distribution, and panel assemblies. Feature: Non-Fusible protection aligns with common switchgear configurations while maintaining quick, controlled disconnection. Impact: simplifies maintenance planning, improves fault isolation, and supports straightforward modernization of legacy panels. Application: retrofit projects and new builds requiring non-fusible protection for reliable shutdown strategies.
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FAQs
Install the three-pole device in a suitable enclosure per UL guidelines, wire the 24 Vac coil to the control circuit, and connect line/load conductors to accommodate 600 Vac ratings. Ensure NEMA 4 sealing for outdoor or damp environments and verify UL/cUL listings for compliance.
Key specs include amperage rating of 600 A, three poles, coil voltage of 24 Vac, and voltage ratings of 600 Vac / 250 Vdc. It is non-fusible, with NEMA 4 enclosure, made from painted steel.
Yes. The NEMA 4 painted-steel enclosure provides dust and moisture protection, suitable for outdoor panels and washdown areas in manufacturing facilities, chemical plants, and food & beverage environments.
The product is UL Listed and cUL Certified, which confirms safety compliance for North American markets and simplifies supplier qualification, audits, and project approvals.
The shunt trip enhances safety and reduces downtime by enabling rapid shutdown. Its robust construction minimizes field failures, while standard components and warranty support ease maintenance and long-term total cost of ownership.