Eaton STS366NP14 Shunt Trip Safety Switch - NEMA 4

Feature: The STS366NP14 delivers a 600 A rating and a 24 Vac coil, enabling rapid disconnection during fault events. Business impact: This capability minimizes arc flash exposure, protects transformers and motors, and reduces unplanned downtime, supporting safe operation in accordance with NFPA 70E and plant safety programs. Application: It is well-suited for motor control centers, drive panels, and distribution boards in heavy industrial environments where high-current protection and fast isolation are essential for reliability and safety. Feature: It includes 1 NO/1 NC auxiliary contacts and 1 NO/1 NC alarm switch, providing richer status feedback and signaling for PLC, SCADA, and safety interlock circuits. Impact: Enhanced visibility into switch state reduces nuisance trips, shortens repair windows, and accelerates fault diagnosis, improving maintenance planning and overall equipment efficiency. Application: Ideal for interlocks, safety signaling, and automated production lines where dependable alerts matter. Feature: The enclosure is NEMA 4 rated and constructed from painted steel, delivering rugged protection against dust, water spray, and corrosion in challenging environments. Impact: Lower maintenance costs and longer service life in wash-down areas, outdoor cabinets, and rugged factory floors. Application: Suitable for harsh industrial installations in manufacturing plants, water treatment facilities, and chemical processing lines where enclosure integrity is critical. Feature: Three-pole design with fusible capability and neutral, plus a 600 V voltage rating, supports seamless integration with standard distribution systems and power control architecture. Impact: Coordinated fault clearing and safer shutdown sequences minimize downtime, reduce energy loss during trips, and simplify wiring in new builds or retrofit projects. Application: Direct compatibility with common electrical cabinets and motor-control centers that require a shunt-trip interlock for critical loads. Feature: UL Listed and cUL Certified marks validate compliance, facilitate procurement, and simplify cross-border use across North America and beyond. Impact: Fewer supplier questions, clearer warranty terms, and alignment with Eaton's protection ecosystem lowers total cost of ownership. Application: Widely adopted in industrial plants and equipment fleets, compatible with standard control circuits and safety programs across industries. Spec highlights reinforce planning: 12.43 in depth, 62.97 in height, 28.29 in width, weight 149 lb, three-pole arrangement, 24 Vac coil, 600 A rating, 600 Vac/250 Vdc voltage, and 1 NO 1 NC auxiliary plus 1 NO 1 NC alarm. This combination supports reliable installation planning, spare-part availability, and straightforward replacement in legacy systems.