Eaton STS366NP11 Shunt Trip Safety Switch - cUL Certified UL Listed
Part Number: STS366NP11
Quick Summary
Eaton STS366NP11 Shunt Trip Safety Switch quickly interrupts power in industrial switchgear. Engineers often struggle to ensure reliable remote shutdown and safe maintenance without compromising uptime. Highlights include cUL Listed, UL Listed certifications and a NEMA 4 enclosure that withstands harsh environments. With a three-pole, 600 A rating and a 24 Vac coil, it delivers robust protection while enabling fast, remote shutdown in critical processes. Its 1 NO-1 NC auxiliary contact supports alarm signaling and status feedback, helping you meet safety and regulatory requirements while reducing nuisance trips and downtime.
Product Information
Extended Description
STS366NP11 Eaton: Eaton shunt trip safety switch, 600 A, Three pole, 600 Vac,250 Vdc, Alarm switch, 24 Vac, 1 NO-1 NC, NEMA 4, Painted steel, Fusible, 600 V
Product Name
Eaton shunt trip safety switch
Catalog Number
STS366NP11
UPC
786685829036
Product Length/Depth
12.43 in
Product Height
62.97 in
Product Width
28.29 in
Product Weight
149 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
Auxiliary contacts
Alarm switch
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
Fusible
Voltage rating
600 Vac, 250 Vdc
Contact configuration
1 NO-1 NC
ARMS Enclosed Circuit Breaker
ARMS Enclosed Circuit Breaker
ARMS Enclosed Circuit Breaker
Eaton Specification Sheet - STS366NP11
Feature: Three-pole construction with a 600 A rating and a 24 VAC coil. Business impact: enables reliable full-load protection and rapid remote shutdown, reducing the risk of unplanned downtime. Application: ideal for motor control centers and switchgear in demanding industrial environments. Feature: Integral alarm contact (1 NO-1 NC). Business impact: enhances signaling for fault detection and regulatory reporting, improving plant safety visibility. Application: interfaces with plant safety systems and control logic to support compliance. Feature: NEMA 4 enclosure in painted steel. Business impact: rugged, weather-resistant protection lowers maintenance and protects critical components. Application: outdoor installations or harsh environments where dust, moisture, or contact with contaminants are a concern. Feature: Certifications UL Listed and cUL Certified. Business impact: streamlines procurement and regulatory compliance across North America. Application: electrical protection and circuit control in manufacturing facilities. Feature: Dimensional and weight data 12.43 in L × 62.97 in H × 28.29 in W; 149 lb. Business impact: informs panel layout and space planning for retrofit or new installations. Application: planning and integration within existing switchgear footprints. Feature: Warranty and service terms. Business impact: provides assurance with a defined policy to mitigate risk during commissioning and maintenance. Application: project kickoff through ongoing support for reliable operation.
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FAQs
STS366NP11 is designed for three-pole assemblies with a 24 VAC coil and 600 A protection. Installers should verify control voltage compatibility, ensure proper wiring of the 1 NO-1 NC alarm contacts, and follow manufacturer guidance for mounting within a NEMA 4 enclosure to maintain environmental protection.
The unit provides a 600 A amperage rating with a 24 VAC coil. It supports a voltage rating of 600 VAC and 250 VDC, suitable for remote tripping in standard switchgear and control circuits.
Yes. The enclosure is NEMA 4 rated and constructed from painted steel, designed to resist dust, moisture, and some corrosion, making it appropriate for demanding industrial locations.
STS366NP11 carries cUL Certified and UL Listed certifications, which facilitate regulatory acceptance and supplier qualification in North American facilities, while supporting safety and compliance documentation for audits.
The shunt trip switch reduces unplanned downtime by enabling rapid remote shutdown, enhances safety signaling via the auxiliary alarm contact, and aligns with prevailing safety standards, contributing to lower maintenance costs and improved uptime over the equipment’s life cycle.