Eaton STS367FD61 Shunt Trip Safety Switch 800 A UL Listed
Part Number: STS367FD64
Quick Summary
The Eaton shunt trip safety switch is a high-reliability device that automatically interrupts power in motor control and safety interlock applications. This precise protection helps prevent arc flash and equipment damage by rapidly releasing control circuits on demand. For engineers facing crowded control panels and tight installation schedules, the STS367FD61 offers straightforward wiring, a robust NEMA 12/3R enclosure, and a 24 Vdc coil that aligns with common control voltages. This unit is UL Listed and cUL Certified, reinforcing compliance for both North American markets while meeting essential safety standards. By integrating an 800 A, three-pole, 1NO/1NC configuration, it delivers dependable protection without compromising accessibility or maintenance efficiency.
Product Information
Extended Description
STS367FD64 Eaton: Eaton Shunt trip safety switch, 800 A, 1NO/1NC auxiliary contact and 1NO/1NC alarm switch, Coil V: 24 Vdc, NEMA 12/3R, 600 V, Three-pole, Fusible
Product Name
Eaton shunt trip safety switch
Catalog Number
STS367FD64
UPC
786685829555
Product Length/Depth
12.43 in
Product Height
71.72 in
Product Width
29.54 in
Product Weight
167 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
Alarm switch
Enclosure
NEMA 12, NEMA 3R
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
ARMS Enclosed Circuit Breaker
ARMS Enclosed Circuit Breaker
ARMS Enclosed Circuit Breaker
Eaton Specification Sheet - STS367FD64
Feature: 800 A amperage rating with a 600 VAC path delivers robust fault tolerance for large motor loads. Business impact: minimizes unplanned downtime by delivering immediate circuit interruption during faults, reducing equipment damage and arc-flash risk. Application: ideal for heavy-duty feeders and power distribution in manufacturing lines where high current switching is routine. Feature: 24 Vdc coil and 1 NO-1 NC alarm contact enable seamless integration with standard control circuits and signaling. Business impact: improves operator awareness and remote monitoring while simplifying wiring in control panels. Application: safety interlocks and remote-status signaling in panelboards and MCCs. Feature: NEMA 12 and NEMA 3R enclosure construction protects switching hardware from dust, moisture, and cleaning chemicals. Business impact: extends service life in harsh environments and reduces maintenance intervals. Application: indoor—and some outdoor—industrial spaces with wash-down risk and exposure to contaminants. Feature: Three-pole design ensures consistent three-phase disconnection and simplifies wiring, reducing panel space and miswiring risk. Business impact: accelerates installation, improves reliability, and supports compliant motor control circuits. Application: motor control centers and feeders in three-phase systems. Feature: UL Listed and cUL Certified credentials streamline procurement, audits, and regulatory compliance. Business impact: lowers supplier risk, enables faster approvals, and supports quality systems. Application: procurement for industrial facilities requiring North American code compliance and product traceability. Feature: Fusible protection option indicated in the product rating supports coordinated overcurrent protection with compatible fuses. Business impact: reduces fault propagation and protects feeders, enabling safer maintenance windows. Application: legacy systems or where fused control is required to meet exact code requirements. Feature: Robust mounting and wiring compatibility with a 12/3R enclosure and common 24 Vdc control voltages simplify installation across multiple panels. Business impact: saves installation time and minimizes field adjustments. Application: cross-site deployments in distributed control architectures and OEM integrations.
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FAQs
What mounting options and enclosure features should I plan for? This unit uses a three-pole configuration inside a NEMA 12, NEMA 3R enclosure, compatible with indoor and some outdoor environments. Plan for 24 Vdc coil wiring, 1NO-1NC alarm contacts, and proper clearances to avoid heat buildup. Verify panel space and torque settings during initial wiring to prevent loose connections that could degrade trip performance.
The STS367FD61 is UL Listed and cUL Certified, signaling adherence to North American safety and performance standards. This reduces regulatory risk in audits, streamlines supplier qualification, and supports code compliance for motor control and interlock applications. Procurement teams often require these certifications to meet installation and safety governance across facilities.
This device excels in motor control centers, large feeder protection, and safety interlock systems where rapid shutdown is essential. Its 800 A rating and three-pole design support high-current, three-phase circuits, while the 24 Vdc coil enables straightforward integration with existing control logic. Use cases include emergency-stop signaling and protective interlocks in manufacturing lines.
Shunt trip devices like the STS367FD61 deliver fast, automatic disconnection during faults, reducing arc flash exposure and equipment damage. The UL/cUL certifications simplify compliance, and the robust NEMA enclosure extends service life in demanding environments. Over time, reduced downtime and fewer maintenance interventions contribute to measurable savings and safer operations.
Assess whether you need the fusible protection option, confirm enclosure compatibility (NEMA 12/3R), and verify the control voltage aligns with your PLC or safety relays (24 Vdc). Also plan for wiring space for 1 NO-1 NC contacts and ensure clear labeling for future upgrades. Document catalog number STS367FD61 for accurate ordering.