Eaton shunt trip safety switch STS366UD1 - UL Listed
Part Number: STS366UD1
Quick Summary
The Eaton shunt trip safety switch STS366UD1 is designed to rapidly isolate three-pole power circuits in industrial control panels. This solution addresses downtime and safety compliance challenges that arise from unintended tripping and slow fault isolation. It carries cUL Certified and UL Listed approvals, with a robust NEMA 12/3R enclosure to resist dust, moisture, and environmental abuse. Built for industrial safety switch applications, it delivers reliable 600 A switching with a 24 Vac coil and non-fusible protection, helping OEMs and end users meet stringent safety and performance requirements while optimizing panel-space and uptime.
Product Information
Extended Description
STS366UD1 Eaton: Eaton shunt trip safety switch, 600 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
STS366UD1
UPC
786685829203
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
cUL Certified UL Listed
Enclosure
NEMA 12, NEMA 3R
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 - STS366UD1
Feature: 600 A three-pole switching with 600 Vac / 250 Vdc ratings and 24 Vac coil. Business Impact: Enables safe, fast isolation of high-current loads, reducing downtime and safeguarding personnel during fault conditions. Application: Ideal for motor control centers and switchgear in heavy industry where rapid fault clearance is essential. Feature: NEMA 12 and NEMA 3R enclosure protections. Business Impact: Provides dust, splash, and environmental resilience for indoor and semi-outdoor installations, lowering maintenance costs. Application: Suitable for production floors, wash-down areas, or outdoor equipment rooms with exposure to moisture. Feature: Non-Fusible design. Business Impact: Simplifies integration with existing control circuits and enhances reliability by avoiding fuse-related nuisance trips. Application: Works with standard control panels using 24 Vac control signals in automation systems. Feature: Large footprint with documented dimensions and weight. Business Impact: Enables precise installation planning and safe handling within MCCs and electrical closets. Application: Useful for OEM project specs and refurbishment projects needing exact enclosure space. Feature: Comprehensive warranty and certifications. Business Impact: Increases supplier confidence and reduces lifecycle risk, supporting long-term maintenance planning and regulatory compliance. Application: Aligns with procurement standards for North American facilities and safety programs.
Get a Quick Quote for a Eaton STS366UD1
Chat with us on WhatsApp - fast responses guaranteed
Need to speak with someone? We'll call you back within 2 hours during business hours
Interested in Eaton STS366UD1?
Enquire Now
FAQs
STS366UD1 is a three-pole safety switch rated for 600A with 600Vac/250Vdc, using a 24Vac coil. Plan for the large footprint (12.43 in depth, 62.97 in height, 28.29 in width) and weight around 140 lb. Ensure compatible enclosure space, proper wiring with non-fusible protection, and space for future maintenance in standard MCC layouts.
Key ratings include a 600A amperage, voltage ratings of 600Vac and 250Vdc, and a 24Vac coil. It is a non-fusible, three-pole device designed for high-current safety isolation in control panels, MCCs, and switchgear applications with reliable performance under demanding conditions.
Yes, STS366UD1 features a rugged enclosure with NEMA 12 and NEMA 3R protection, making it suitable for indoor industrial spaces and semi-enclosed outdoor areas where dust, moisture, or spray may be present. This provides enhanced reliability for equipment in challenging environments while maintaining safety standards.
STS366UD1 holds cUL Certified and UL Listed approvals, supporting compliance with major North American electrical safety programs. These certifications, combined with its NEMA-rated enclosure, help facilities meet regulatory requirements for safety and performance in industrial automation and control environments.
The unit ships with a one-year warranty from installation or eighteen months from shipment, whichever comes first, reducing risk during commissioning. Its non-fusible design and robust enclosure improve uptime and lower maintenance costs by minimizing nuisance trips, while compatibility with standard 24Vac control circuits supports quicker replacement or retrofit without extensive rewiring.