Littelfuse, Inc. Industrial Relays 601575

The 601575 is a 3-phase voltage and frequency monitor designed to protect motors from phase loss, reversal, voltage and frequency deviations, and unbalance. It is rated for 500-600 V ac input and features a three-digit LED display for real-time monitoring and programmable setpoints. The device supports surface or DIN-rail mounting, with dimensions of 77.47 mm H × 97.79 mm W × 128.27 mm D and a weight of 1.2 lbs. It includes two programmable trip delays, two restart delay timers, and manual or automatic restart options. The output relay is rated at 480 VA at 240 V ac. It complies with UL 508 and CSA C22.2 No. 14 standards, operates from -20°C to 70°C, and supports Modbus RTU communication via the RS485MS-2W module.