ABB CM-ESS.MS MULTIFUNCTIONAL VOLTAGE MONITORING RELAY CONTROL 24-240VAC/DC 2CO

The Multifunctional Voltage Monitoring Relay is designed for over- or undervoltage monitoring. It uses a RMS measuring principle for both DC and AC voltages, with 4 measuring ranges: 3-30 V, 3-60 A, 30-300 V, and 60-600 V. The relay operates according to the open-circuit principle and has a rated control supply voltage of 24 - 240 V AC/DC. This relay features 2 CO (SPDT) output contacts that are rated at 250 V / 4 A. It offers the option to select between over- or undervoltage monitoring, as well as open- or closed-circuit operating principles. Additionally, it can be used with or without a latching function. The tripping delay of the relay is adjustable and can range from instantaneous to 30 s (0, 0.1-30 s). The device utilizes screw connection technology with double-chamber cage connection terminals for easy installation.