Eaton STS367ND34 Shunt Trip Safety Switch - UL Listed
Part Number: STS367ND34
Quick Summary
The Eaton shunt trip safety switch STS367ND34 provides rapid fault isolation for large electrical panels in industrial environments. Engineers often struggle with reliable tripping without complex wiring or unnecessary downtime. UL Listed and cUL Certified safety, along with NEMA 12 and NEMA 3R enclosure compatibility, support resilient operation in harsh spaces. By combining 800 A protection, a 120 Vac coil, and clear auxiliary contact options, it enables streamlined installation, easier maintenance, and ongoing compliance. This translates to safer systems, reduced downtime, and lower total cost of ownership for panel builders and end users.
Product Information
Extended Description
STS367ND34 Eaton: Eaton shunt trip safety switch, 800 A, Three-pole, 600 Vac, 250 Vdc, Alarm switch, Auxiliary contact, 120 Vac, 1 NO 1 NC, NEMA 12, NEMA 3R, Fusible, 600 V
Product Name
Eaton shunt trip safety switch
Catalog Number
STS367ND34
UPC
786685829807
Product Length/Depth
12.43 in
Product Height
71.72 in
Product Width
29.54 in
Product Weight
170 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
Auxiliary contact
Enclosure
NEMA 12, NEMA 3R
Number Of Poles
Three-pole
Type
Shunt trip safety switch
Amperage Rating
800A
Coil voltage
120 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 - STS367ND34
Feature: 800 A, three-pole shunt trip with fusible protection. Business Impact: High-current protection minimizes fault escalation and reduces equipment damage, improving uptime. Application: Ideal for feeders and main lugs in switchgear and motor control centers. Feature: 600 Vac / 250 Vdc voltage rating and 120 Vac coil voltage. Business Impact: Flexible control across AC and DC fault conditions, enabling precise trip coordination and safer lockout procedures. Application: Suitable for mixed-voltage control panels in industrial facilities. Feature: NEMA 12 and NEMA 3R enclosure compatibility. Business Impact: Enhanced environmental protection and outdoor readiness, lowering enclosure-related maintenance costs. Application: Outdoor substations and harsh manufacturing environments. Feature: 1 NO 1 NC auxiliary contacts. Business Impact: Simplified status signaling and interlock integration, improving alarms and control logic reliability. Application: Control circuits and remote annunciation. Feature: Certification and warranty integration. Business Impact: Regulatory compliance and predictable service life minimize risk and maintenance expenditures. Application: U.S. and Canadian safety standards compliance with Eaton’s warranty terms as defined.
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FAQs
STS367ND34 is designed for three-pole mounting in protected electrical panels with up to 800 A ratings. Plan for a compatible NEMA 12 or NEMA 3R enclosure, ensure proper wiring for the 120 Vac control coil, and include the 1 NO 1 NC auxiliary contact for signaling. Adhere to local electrical codes and Eaton’s installation guidelines to optimize trip performance and safety.
The device provides an 800 A amperage rating, with a voltage rating of 600 Vac and 250 Vdc, and a 120 Vac coil supply. This combination supports reliable shunt-trip activation across both AC and DC fault scenarios, enabling coordinated protection in mixed-energy panel systems.
Yes. With three poles, fusible protection, and a 1 NO 1 NC auxiliary contact, the STS367ND34 integrates well with motor control centers and switchgear assemblies, supporting fast fault isolation, status signaling, and simplified interlock schemes in critical industrial environments.
STS367ND34 is UL Listed and cUL Certified, ensuring conformity with U.S. and Canadian safety standards. These certifications matter for regulatory compliance, factory acceptance testing, and reducing risk during commissioning in diverse industrial facilities.
Eaton provides a warranty per policy 25-000, one year from installation or eighteen months from shipment, whichever occurs first. Routine inspection of the auxiliary contacts and enclosure seals, along with periodic electrical tests, helps sustain trip reliability and minimizes unplanned downtime.