The CM-ESS.1S Is A Single-Functional Voltage Monitoring Relay From The CM Single-Phase Monitors Range. This Monitoring Relay Operates With A Rated Control Supply Voltage Of 110 – 130 V AC And Has A 1 C/O (SPDT) Output Contact Rated At 250 V / 4 A. It Provides A RMS Measuring Principle For DC And AC Voltages With 4 Measuring Ranges: 3-30 V, 3-60 A, 30-300 V And 60-600 V And Works According To The Open-Circuit Principle. The CM-ESS.1S Is Configurable For Over- Or Undervoltage Monitoring, The Hysteresis Is Adjustable Within A Range Of 3 To 30 % Of The Threshold Value. A Sealable Transparent Cover For Protection Against Unauthorized Changes Is Available As Accessory. The Device Offers Screw Connection Technology With Double-Chamber Cage Connection Terminals.

• · Single Phase Monitors