Carlo Gavazzi Motor Load Monitoring Relay

Monitors three-phase motors to prevent overload (jamming) or no-load operation (e.g. in event of snapped drive belt). Measures own operating voltage and current in one phase and determines present power factor in motor supply line. Direct measurement of motor current or measurement via standard current transformer. Programmable and adjustable suppression of alarm signal when motor starts up. Lock-up function with external release or alarm signal suppression (DWB only). Adjustable alarm delay (DWB only). LED displays for operating voltage, relay and alarm (alarm only in DWB). Adjustable switching point for upper and/or (DWA/DWB) lower limit value of power factor cos Φ. Output programmable to activated or non-activated. For mounting on DIN rail.