Eaton STS368NW32-1C00 Shunt Trip Safety Switch - NEMA 4X
Part Number: STS368NW32-1C00
Quick Summary
Eaton shunt trip safety switch for high‑current motor control and distribution panels provides fast, remote trip capability and fail‑safe shutdown. This model helps engineers avoid nuisance trips and achieve reliable protection in demanding installations. UL Listed and cUL Certified, with a rugged NEMA 4X enclosure, it supports code compliance and outdoor or washdown environments. The device delivers robust protection with a 1200 A rating and 120 Vac coil, minimizing downtime while simplifying integration with existing control logic. Designed for field reliability and total cost of ownership reduction, it aligns with industrial safety standards and project schedules.
Product Information
Extended Description
STS368NW32-1C00 Eaton: Eaton shunt trip safety switch, with AFGF relay, 1200 A, Three-pole, 600 Vac, 250 Vdc, 120 Vac, 1NO 1NC, NEMA 4- EnclosureX, Protection-Fusible, 600 V
Product Name
Eaton shunt trip safety switch
Catalog Number
STS368NW32-1C00
UPC
786689369699
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 1NO/1NC Aux Con, 480V CPT, AER/GF Relay & Sensors
Enclosure
NEMA 4X
Number Of Poles
Three-pole
Type
Shunt trip safety switch w/ AFGF relay
Amperage Rating
1200A
Coil voltage
120 Vac
Protection
Fusible
Voltage rating
600 Vac, 250 Vdc
Contact configuration
1NO 1NC
Commercial Distribution, Switching Devices, Volume 2, Tab 1
Switching Devices Flex Center
Switching Devices Flex Center
Switching Devices Flex Center
Eaton Specification Sheet - STS368NW32-1C00
Feature → Business Impact → Application: High-current capability of 1200 A in a three-pole configuration enables safe, rapid isolation of heavy circuits, reducing fault cascades and equipment damage during faults in motor drives and feeders. This translates to shorter downtime and improved plant safety in process lines and packaging equipment that demand robust interrupt capability. Application: MCCs, switchgear banks, and high‑load distribution panels where reliable fault clearance is critical. Feature → Business Impact → Application: 600 Vac and 250 Vdc voltage ratings provide versatile protection across AC and DC systems, allowing a single device to cover diverse line conditions and control circuits, lowering component counts and procurement complexity in multi‑voltage environments. Feature → Business Impact → Application: Integrated 1NO 1NC auxiliary contact and AFGF relay streamline control wiring and signaling, enabling seamless remote signaling, lockout/tagout compatibility, and faster controller feedback during startup and shutdown. Application: Industrial automation panels requiring clear interlock signaling and auxiliary feedback in a compact footprint. Feature → Business Impact → Application: NEMA 4X enclosure delivers superior corrosion and washdown resistance, reducing enclosure maintenance and extending service life in harsh environments like outdoor switchyards or food/beverage facilities. Application: Outdoor MCCs, process lines, and washdown areas where environmental protection is essential. Feature → Business Impact → Application: Includes 1NO/1NC Aux Con, 480V CPT, AER/GF Relay & Sensors in catalog notes, enabling ready integration with standard Eaton accessories and reducing engineering time for accessory sourcing. Application: Projects aiming for fast deployment with compatible sensing and signaling options. Feature → Business Impact → Application: UL Listed and cUL Certified status supports national and international compliance, simplifying audits and reducing regulatory risks in regulated industries. Application: Facilities pursuing formal safety certifications and customers requiring independent verification of electrical protection devices. Feature → Business Impact → Application: Overall dimensions (approximately 23.15 in depth, 72.5 in height, 47.23 in width) and weight (405 lb) inform cabinet sizing, mounting, and rack space planning, avoiding rework during installation. Application: System designers planning footprint and mechanical integration for large distribution assemblies.
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FAQs
The STS368NW32-1C00 provides a 1NO 1NC auxiliary contact and an AFGF relay, enabling straightforward signaling to motor controllers and logic circuits. Its 120 Vac coil is compatible with common control power supplies used in MCCs, and the device can be integrated with standard Eaton accessories for interlock and feedback loops. This minimizes rewiring and accelerates panel commissioning.
Rated for 1200 A, three-pole operation, and 600 Vac with 250 Vdc voltage ratings, the STS368NW32-1C00 is built to interrupt large fault currents quickly. The integrated shunt trip mechanism provides rapid remote energization of the trip coil, ensuring safe shutdown of equipment. In practice, this reduces arc flash exposure and limits damage to downstream components during faults.
Yes. The device uses a NEMA 4X enclosure designed for rugged environments, including resistance to corrosion and washdown conditions. UL Listed and cUL Certified further confirm compliance with safety and installation standards, making it appropriate for outdoor substations, food and beverage facilities, and other harsh settings.
With a footprint spanning 23.15 in depth, 72.5 in height, and 47.23 in width, plus a weight of 405 lb, ensure adequate mounting space and reinforced supports in your electrical room or cabinet. Plan for service clearances and alignment with adjacent devices. Pre‑fabricated mounting rails and coordinated accessory planning help streamline installation and reduced site labor.
Maintenance benefits stem from a robust NEMA 4X enclosure and durable contact mechanisms, reducing the frequency of external inspections. The integrated aux signaling simplifies diagnostics and monitoring, improving uptime tracking. ROI is realized through faster deployment, fewer wiring errors, reduced downtime during faults, and streamlined regulatory compliance thanks to UL/cUL certification.