Littelfuse, Inc. Industrial Relays 601-CS-D-P1

The 601-CS-D-P1 is a fully programmable, electronic, three-phase power monitor designed to detect ground faults using an external zero-sequence current transformer. It features a single SPDT relay rated at 10 A at 240 V ac and includes a built-in display for real-time monitoring of voltage, current, and ground-fault conditions. The unit operates from 200 to 480 V ac at 50/60 Hz and monitors ground-fault currents from 0.5 to 10 A. It supports Modbus RTU via an RS485MS-2W module and DeviceNet via the CIO-601CS-DN-P1 module. The device mounts via surface mount or DIN rail, with dimensions of 77.47 mm H × 97.79 mm W × 128.27 mm D and a weight of 1.2 lbs. It meets UL508, IEC 60947-1, and IEC 60947-5-1 standards and complies with IEC 61000-4-2, -3, -4, and -5 for electromagnetic compatibility. The ambient operating temperature range is -20°C to 70°C.