Eaton STS366UP11 Shunt Trip Safety Switch - UL Listed

The 600 A amperage rating delivers robust protection for feeders and motor starters, reducing nuisance trips during peak loads and minimizing fuse changes. This translates to safer shutdown sequences, lower maintenance costs, and improved line availability on critical lines in a production line or packaging facility. It’s suited for motor control centers and high-current feeders in process and discrete manufacturing environments. The 24 Vac coil aligns with standard control circuits, enabling fast, remote trip signaling through PLC I/O without adding transformer steps. This reduces reaction time, enhances operator safety, and simplifies integration with existing control systems. The device’s voltage ratings of 600 Vac and 250 Vdc cover both AC mains and DC bus segments, simplifying spares and enabling mixed-voltage protection in complex installations. It’s ideal for applications requiring reliable cross-voltage protection in industrial plants. As a three-pole, non-fusible device with 1 NO-1 NC contact, it provides straightforward wiring and predictable interlocks, reducing accessory counts and procurement complexity for three-phase circuits. A NEMA 4, painted steel enclosure delivers rugged protection against dust, moisture, and corrosion, supporting outdoor and harsh-environment installations. The auxiliary Alarm switch contact enables remote signaling to PLCs, alarm panels, and plant monitoring systems, improving safety oversight and maintenance planning. Practical dimensions of 12.43 in depth, 62.97 in height, and 28.29 in width, along with a 140 lb weight, inform mounting decisions and space planning, while UL and cUL certifications streamline procurement and compliance for global deployments.