The CM-SRS.21P Is A Single-Functional Current Monitoring Relay From The CM Single-Phase Monitors Range. This Monitoring Relay Operates With A Rated Control Supply Voltage Of 24 – 240 V AC / DC And Has A 2 C/O (SPDT) Output With Contacts Rated At 250 V / 4 A. It Provides A RMS Measuring Principle For DC And AC Currents With 3 Measuring Ranges: 3-30 MA, 10-100 MA And 0.1-1 A And Works According To The Open-Circuit Principle. The CM-SRS.21P Is Configurable For Over- Or Undercurrent Monitoring. The Hysteresis Is Adjustable Within A Range Of 3 To 30 % Of The Threshold Value And The Tripping Delay Is Adjustable Over A Range Of Instantaneous To 30 S (0, 0.1-30 S). A Sealable Transparent Cover For Protection Against Unauthorized Changes Is Available As Accessory. The Device Offers Maintenance Free Easy Connect Technology With Push-In Terminals.

• · Single Phase Monitors