Eaton STS367NP3 Shunt Trip Safety Switch - UL Listed
Part Number: STS367NP3
Quick Summary
Eaton STS367NP3 shunt trip safety switch provides rapid de-energization for motor control panels in industrial facilities. In critical power systems, delayed or missed trips can lead to costly downtime and equipment damage. Certified cUL and UL listed, with a NEMA 4 enclosure, it supports reliable operation in harsh environments. Designed for electrical protection and circuit control in industrial settings, it helps reduce maintenance costs and accelerates regulatory compliance. The robust three-pole design, 800 A rating, and 120 Vac coil support high-current applications in switchgear, motor starters, and distribution panels. This device integrates with standard electrical protection and circuit-control strategies, enabling faster retrofit, easier maintenance, and lower total cost of ownership.
Product Information
Extended Description
STS367NP3 Eaton: Eaton shunt trip safety switch, 800 A, Three-pole, 600 Vac, 250 Vdc, 120 Vac, NEMA 4, Painted steel, Fusible, 600 V
Product Name
Eaton shunt trip safety switch
Catalog Number
STS367NP3
UPC
786685829876
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
120 Vac
Protection
Fusible
Voltage rating
600 Vac, 250 Vdc
ARMS Enclosed Circuit Breaker
ARMS Enclosed Circuit Breaker
ARMS Enclosed Circuit Breaker
Eaton Specification Sheet - STS367NP3
Feature → Business Impact → Application: 800 A three-pole configuration delivers high-current protection with a compact, modular footprint, enabling safer, quicker shutdowns in large motor control centers. This translates to reduced downtime and improved plant safety when remote-trip signals are received in real time, ideal for switchgear and distribution panels. Feature → Coil voltage 120 Vac offers seamless integration with common control circuits, simplifying wiring and control logic while reducing panel space and installation costs. Application: remote signaling systems and centralized protection schemes. Feature → Voltage rating 600 Vac / 250 Vdc provides cross-domain protection for both AC and DC circuits, expanding compatibility with mixed-voltage installations and ensuring safe disconnection during faults. Application: mixed-voltage power distribution, DC buses in industrial equipment. Feature → NEMA 4 painted steel enclosure enhances durability against dust, moisture, and incidental contact, enabling reliable outdoor or harsh-indoor service with minimal enclosure maintenance. Application: outdoor switchgear, industrial enclosures, and harsh environments. Feature → Fusible protection and UL/cUL certifications underpin compliance with safety standards while enabling streamlined audits and procurement. Application: regulatory compliance in manufacturing and process industries. Feature → Heavy-duty construction (170 lb) supports rugged, long-term installations, with mounting flexibility to fit standard electrical rooms. Application: retrofit projects and new EPC builds in manufacturing plants.
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FAQs
The STS367NP3 is a three-pole, 800 A shunt trip device designed to integrate with typical switchgear and motor control panels. It uses standard mounting provisions compatible with common enclosure footprints and a durable painted steel NEMA 4 enclosure for harsh environments. When planning installation, account for the unit’s substantial weight (170 lb) and ensure adequate mounting studs, clearance for wiring, and proper strain relief for the 120 Vac coil wiring to maintain reliable performance.
Key specifications include an 800 A amperage rating, 600 Vac main voltage, 250 Vdc, and a 120 Vac coil. The device is fusible-protected and UL Listed, with cUL certification, making it suitable for standard electrical protection and circuit-control applications across mixed-voltage installations. This combination supports reliable remote tripping and compatibility with typical control circuits in industrial facilities.
This switch excels in industrial power distribution, motor control centers, switchgear, and process automation panels where fast remote shutdown is essential. Its rugged NEMA 4 enclosure and high current rating make it ideal for manufacturing, mining, and energy-intensive facilities needing dependable protection for both AC and DC circuits, with easy integration into existing protection architectures.
The STS367NP3 carries UL Listed and cUL Certified certifications, confirming safety compliance for installations in the US and Canada. These certifications simplify regulatory audits, support supplier qualification, and help meet internal safety standards for electrical protection and circuit-control equipment used in critical facilities and manufacturing environments.
Expect improved uptime and safer shutdowns due to reliable remote tripping, reduced wiring complexity with standard coil voltage, and durable enclosure protection in demanding environments. While the unit is heavy, the rugged design minimizes maintenance needs. Its one-year warranty from installation or eighteen months from shipment also provides confidence in lifecycle cost of ownership.