Eaton STS367NP61 Shunt Trip Safety Switch - NEMA 4
Part Number: STS367NP61
Quick Summary
Eaton shunt trip safety switch provides rapid circuit disconnection for industrial control panels. In demanding environments, mis-trips risk unplanned downtime and safety incidents. UL Listed, cUL Certified, and a NEMA 4 enclosure rating ensure compliance and rugged, reliable performance. The STS367NP61 supports 800 A, 600 Vac / 250 Vdc with a 24 Vdc coil, enabling straightforward integration with existing MCCs and control circuits. Its three-pole design with 1 NO 1 NC contacts simplifies wiring, fault handling, and ongoing maintenance. Backed by Eaton's warranty and service policy, it protects capital equipment and operator safety over the long term.
Product Information
Extended Description
STS367NP61 Eaton: Eaton shunt trip safety switch, 800 A, Three-pole, 600 Vac, 250 Vdc, Alarm switch, 24 Vdc, 1 NO 1 NC, NEMA 4, Painted steel, Fusible, 600 V
Product Name
Eaton shunt trip safety switch
Catalog Number
STS367NP61
UPC
786685829913
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
Enclosure
NEMA 4
Enclosure material
Painted steel
Number Of Poles
Three-pole
Type
Shunt trip safety switch
Amperage Rating
800A
Coil voltage
24 Vdc
Protection
Fusible
Voltage rating
600 Vac, 250 Vdc
Contact configuration
1 NO 1 NC
Double Up on Safety
Double Up on Safety
Double Up on Safety
Eaton Specification Sheet - STS367NP61
Selling Policy 25-000 - Distribution and Control Products and Services
Feature 800 A amperage rating → Business Impact: Handles high inrush and continuous loads without nuisance trips, reducing unplanned downtime and operator risk. Application: Motor control centers and large distribution panels benefit from reliable protection without compromising performance. Feature 24 Vdc coil → Business Impact: Facilitates seamless PLC or control-system integration, enabling precise trip signaling and faster response times. Application: Control circuits in automated lines and safety interlocks gain predictable behavior. Feature 600 Vac / 250 Vdc ratings → Business Impact: Versatile across AC and DC control circuits, enabling unified protection schemes across equipment. Application: Industrial plants with mixed voltage domains simplify hardware stocking. Feature NEMA 4 enclosure → Business Impact: Superior ingress and weather resistance lowers maintenance cycles and extends service life. Application: Outdoor switchgear and damp environments. Feature Three-pole with 1 NO 1 NC → Business Impact: Flexible interlock and fault-signal configurations ease wiring complexity and protective coordination. Application: Safety circuits in MCCs and control panels. Feature Fusible protection → Business Impact: Enables controlled shutdowns and selective protection against faults. Application: Industrial protection schemes in high-current applications. Feature Warranty and service policy → Business Impact: Reduces total cost of ownership through predictable support and post-sale assistance. Application: Plant-wide deployments requiring long-term reliability.
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FAQs
STS367NP61 is designed for three-pole installation in standard 600 Vac control panels and motor control centers. Its NEMA 4 enclosure and painted steel housing support rugged environments, while the 1 NO 1 NC contact set simplifies wiring and interlocking schemes. Ensure sufficient space for the device and verify control wiring matches the 24 Vdc coil specifications for reliable operation.
Key specs include an 800 A amperage rating, 24 Vdc coil voltage, and voltage ratings of 600 Vac / 250 Vdc. It is configured as a three-pole device with 1 NO 1 NC contacts and is fusible, offering robust protection. The unit is UL Listed, cUL Certified, and features a NEMA 4 enclosure for durable performance in demanding environments.
Yes. The STS367NP61 features a NEMA 4 enclosure and painted steel construction designed to resist dust, water, and corrosion in harsh settings. This makes it suitable for outdoor installations and rugged indoor spaces such as weather-exposed panels or manufacturing floors, where reliable shutdown and fault signaling are critical for personnel safety.
The device is UL Listed and cUL Certified, indicating compliance with recognized safety standards. These certifications support regulatory acceptance, safer operation in industrial controls, and easier customer audits. Combined with the NEMA 4 enclosure, the STS367NP61 meets stringent requirements for protection against dust and water ingress in challenging environments.
The STS367NP61 reduces downtime through faster, reliable tripping and protects personnel from arc-flash and electrical hazards. Its robust enclosure and fusible protection simplify maintenance and coordination with existing safety schemes, potentially lowering maintenance costs over time. The included Eaton warranty further minimizes lifecycle risk for mission-critical applications.