Eaton STS368NP3-1B00 Heavy Duty Shunt Trip Safety Switch - UL Listed
Part Number: STS368NP3-1B00
Quick Summary
The Eaton STS368NP3-1B00 Heavy Duty Shunt Trip Safety Switch provides rapid, safe power isolation for three-pole protection in industrial switchgear. In demanding facilities, downtime and safety compliance are ongoing challenges during power switching. Key certifications include UL Listed and cUL Certified, with a NEMA 4 enclosure designed to resist harsh environments. This solution supports robust control schemes, integrates with 120 Vac coil control, and helps panel builders meet safety codes while improving uptime. By delivering reliable isolation, it reduces maintenance costs and strengthens overall plant reliability. It also streamlines installation with standard mounting and wiring.
Product Information
Extended Description
STS368NP3-1B00 Eaton: Eaton Heavy Duty Shunt Trip Safety Switch, Three Pole, NEMA 4- Enclosure, Fusible, 1200 A, 600 Vac, 250Vdc
Product Name
Eaton Heavy Duty Shunt Trip Safety Switch
Catalog Number
STS368NP3-1B00
UPC
786689314309
Product Length/Depth
23.15 in
Product Height
72.5 in
Product Width
47.23 in
Product Weight
405 lb
Certifications
UL Listed cUL Certified
Catalog Notes
Includes 480V CPT and GF Relay & Sensors
Enclosure
NEMA 4
Number Of Poles
Three-pole
Amperage Rating
1200A
Coil voltage
120 Vac
Protection
Fusible
Voltage rating
600 Vac, 250 Vdc
Switching Devices Flex Center
Switching Devices Flex Center
Switching Devices Flex Center
Eaton Specification Sheet - STS368NP3-1B00
Feature: Three-pole, heavy-duty construction ensures robust fault-current handling and dependable isolation when the system is energized. Business Impact: Reduces nuisance trips, improves interlock reliability, and cuts unplanned downtime in demanding environments. Application: Optimal for large process plants and electrical switchgear where reliable three-pole protection and clear switching paths are essential for safety and uptime. Feature: 1200 A amperage rating with 600 Vac and 250 Vdc voltage ratings. Business Impact: Supports high-current feeders and mixed-voltage schemes within a single device, simplifying spare parts and training. Application: Power distribution panels and machine centers that demand substantial current protection without multiple devices. Feature: 120 Vac coil voltage and fusible protection. Business Impact: Delivers precise actuation control while providing a clear fail-safe path, reducing control wiring complexity and potential mis-wiring. Application: Control circuits and safety interlock networks in automated lines where rapid trip signaling is critical. Feature: NEMA 4 enclosure. Business Impact: Provides weather- and washdown-resistance for indoor and outdoor installations, lowering enclosure maintenance and corrosion risk. Application: Harsh manufacturing floors, outdoor switchgear housings, and damp environments where dependable enclosure integrity matters. Feature: Includes 480V CPT and GF Relay & Sensors per catalog notes. Business Impact: Streamlines engineering and commissioning by guaranteeing compatible sensing and control interfaces. Application: End-to-end protection schemes in switchgear that rely on built-in sensing signals; reduces field wiring and debugging time. Feature: UL Listed and cUL Certified with a well-documented catalog footprint. Business Impact: Eases design verification, audits, and regulatory approvals, accelerating project timetables. Application: European and North American installations that require recognized safety approvals and traceable components.
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FAQs
Installation requires proper lockout/tagout procedures, verification of coil wiring, and alignment with the panel’s bus rating. Mount the device in a suitable location within the enclosure, connect the 120 Vac coil to control circuitry, and wire the fusible protection path per the Eaton spec sheet. Ensure all terminations are tightened to manufacturer torque values and test the trip function with a controlled safety signal before energizing the system.
The unit is rated for 1200 A with voltage ratings of 600 Vac and 250 Vdc. It utilizes a 120 Vac coil and provides fusible protection. It is a three-pole device housed in a NEMA 4 enclosure, and the catalog notes indicate inclusion of 480V CPT and GF Relay & Sensors for integrated protection schemes.
Yes. The device uses a NEMA 4 enclosure designed to withstand washdowns and harsh environments typically found in industrial settings. While installation should still follow site-specific IP/washdown requirements, the enclosure provides robust protection against moisture, dust, and cleaning agents in many facilities.
The STS368NP3-1B00 is UL Listed and cUL Certified, signaling compliance with widely recognized safety standards in North America. This accelerates customer approvals, supports regulatory audits, and provides assurance to panel builders and end users that the switch meets strict safety criteria for industrial installations.
This device improves uptime by delivering rapid, reliable isolation during faults, reduces maintenance through durable construction, and supports regulatory compliance with UL/cUL approvals. By consolidating protection for high-current feeders in a single three-pole unit, it also simplifies spare parts management and panel design, lowering total cost of ownership.