Eaton STS367NP11 Shunt Trip Safety Switch - UL Listed
Part Number: STS367NP11
Quick Summary
STS367NP11 is a high‑capacity shunt trip safety switch used to rapidly interrupt 800 A three‑pole circuits. In demanding facilities, slow or miscoordinated shutdowns can lead to unplanned downtime and safety incidents. The device carries UL Listed and cUL Certified marks and ships with a NEMA 4 painted steel enclosure, suitable for wet or dusty environments. This combination delivers reliable protection in harsh plant floors while meeting industrial safety standards. By leveraging a 24 Vac coil and multi‑contact configuration (1 NO 1 NC) along with 600 Vac / 250 Vdc ratings, it supports fast, predictable trips and straightforward wiring for integration into motor control centers and safety interlocks. The result is improved equipment uptime and easier regulatory compliance for your protection scheme.
Product Information
Extended Description
STS367NP11 Eaton: Eaton shunt trip safety switch, 800 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
STS367NP11
UPC
786685829852
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
UL Listed cUL Certified
Enclosure
NEMA 4
Enclosure material
Painted steel
Number Of Poles
Three-pole
Type
Shunt trip safety switch
Amperage Rating
800A
Coil voltage
24 Vac
Protection
Fusible
Voltage rating
600 Vac, 250 Vdc
Contact configuration
1 NO 1 NC
STS367NP11 combines high current capability with rugged reliability to support modern industrial protection schemes. Feature: 800 A amperage with three‑pole construction. Business impact: reduces panel density and simplifies protection strategy by enabling a single device to guard large motors and feeders, improving maintenance planning and spare parts management. Application: ideal for MCCs and main feeders in manufacturing lines where rapid isolation prevents fault propagation. Feature: 24 Vac coil permits compatible control wiring from standard safety circuits. Business impact: simplifies wiring and reduces control panel complexity while enabling fast actuation. Application: use within control circuits for emergency shutdown or interlocks. Feature: 600 Vac / 250 Vdc voltage ratings and 1 NO 1 NC contact. Business impact: supports multi‑voltage systems and versatile control logic with predictable trip behavior. Application: ensures reliable separation of power paths in mixed environments. Feature: NEMA 4 painted steel enclosure. Business impact: enables outdoor or washdown environments with weather and dust tolerance. Application: suitable for manufacturing floors, outdoor substations, or process plants. Feature: fusible protection option. Business impact: adds an extra layer of feeder protection and arc‑fault mitigation. Application: preferred in feeders with higher fault current potential. Feature: robust warranty and Eaton support policy. Business impact: reduces total cost of ownership through predictable service and parts availability. Application: long‑term asset protection across facilities needing durable protection solutions.
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FAQs
Begin by confirming sufficient space for the three‑pole unit and wiring, ensuring the panel supports an 800 A device. Verify the coil is 24 Vac and that your feeders match the 600 Vac / 250 Vdc ratings. Wire the 1 NO 1 NC contacts per your control logic, and mount in a NEMA 4 environment to protect against dust or water ingress. Follow NEC guidelines and Eaton’s installation recommendations for optimal performance.
Confirm the 800 A amperage rating, 24 Vac coil voltage, and voltage ratings of 600 Vac / 250 Vdc. Check the contact configuration of 1 normally open and 1 normally closed, and note the fusible protection option. Ensure enclosure is NEMA 4 compatible for your environment, and verify coordination with downstream protective devices to achieve selective tripping.
Yes. STS367NP11 uses a NEMA 4 enclosure with painted steel construction designed to resist dust, water ingress, and cleaning processes. This makes it appropriate for outdoor installations, washdown areas, and harsh industrial environments where reliable performance and protection are critical.
The device is UL Listed and cUL Certified, indicating compliance with recognized safety standards for electrical protection equipment. These certifications provide regulatory assurance, facilitate acceptance across facilities with strict procurement standards, and help simplify qualification tests for safety interlocks and motor control circuits.
Eaton offers a one‑year warranty from installation or eighteen months from shipment, whichever comes first. This reduces long‑term risk and lowers total cost of ownership. In practice, the STS367NP11’s durability, high current rating, and regulatory compliance minimize downtime and maintenance frequency in demanding industrial settings.