Eaton STS367UD34 Shunt Trip Safety Switch - UL Listed
Part Number: STS367UD34
Quick Summary
Eaton shunt trip safety switch protects large electrical systems by triggering isolation during abnormal conditions. Operators and maintenance teams struggle with nuisance trips and slow responses; this unit ensures fast, reliable shutoff with clear alarm signaling. It carries cUL Certified and UL Listed safety certifications and is housed in a robust NEMA 12 / NEMA 3R enclosure for indoor and outdoor environments. With 800 A capacity and a 120 Vac coil, it supports high-demand motor control centers and protection panels while simplifying compliance and serviceability. By integrating this shunt trip into your protection strategy, you can reduce downtime, improve safety, and meet relevant industry standards.
Product Information
Extended Description
STS367UD34 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, Non-Fusible, 600 V
Product Name
Eaton shunt trip safety switch
Catalog Number
STS367UD34
UPC
786685830070
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
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
Non-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 - STS367UD34
Feature → Business Impact → Application: The STS367UD34 delivers an 800 A, three-pole, non-fusible design that provides robust fault isolation for feeders and MCCs, reducing equipment stress and unplanned outages in manufacturing lines. This translates to improved plant reliability and lower maintenance costs when protecting high-current loads in motor control centers and distribution panels. Feature → Business Impact → Application: The 120 Vac coil with 600 Vac and 250 Vdc ratings plus a 1 NO 1 NC configuration and auxiliary contact offer flexible control logic and remote alarm signaling, enabling safer interlock sequences and easier integration with BMS or PLCs across packaging, metals, and process industries. Feature → Business Impact → Application: The NEMA 12 and NEMA 3R enclosures provide environmental protection and easier installation in both clean indoor rooms and outdoor switchgear enclosures, reducing corrosion risk and service disruptions in harsh factory settings. Feature → Business Impact → Application: UL Listed and cUL Certified certifications deliver regulatory alignment and audit readiness, limiting compliance risk for plants with US and Canadian operations while supporting vendor qualification processes. Feature → Business Impact → Application: The included warranty and Eaton support ecosystem lower total cost of ownership, enabling proactive maintenance planning and rapid parts availability for upgrades in large-scale automation projects.
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FAQs
The STS367UD34 is designed for use in NEMA 12 and NEMA 3R enclosures, supporting indoor and some outdoor applications. It is a three-pole, non-fusible switch with a 1NO 1NC auxiliary contact and alarm signaling, making it suitable for integration in typical MCCs and power distribution panels with standard mounting provisions.
Key ratings include 800 A amperage, 600 Vac and 250 Vdc voltage ratings, and a 120 Vac coil voltage. The device is a three-pole, non-fusible switch with 1NO 1NC contact configuration and an auxiliary contact, suitable for high-current protection schemes.
Yes. With its 800 A capacity, three-pole design, and 120 Vac coil, the unit is well-suited for MCCs and large distribution panels, providing reliable isolation and straightforward integration with control logic and alarm signaling.
The product is UL Listed and cUL Certified, offering third-party safety validation for US and Canadian standards. These certifications support compliance audits, product qualification, and safe operation in regulated industrial environments.
Eaton provides a warranty per policy 25-000: one year from installation or eighteen months from shipment, whichever occurs first. This, combined with Eaton’s service network, helps reduce downtime and supports proactive maintenance planning.