The CM-MSS.51S Belongs To The CM Thermistor Motor Protection Relay Range. It 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 Features Two Sensor Circuit To Monitor PTC Temperature Sensors (Single Or Accumulative Evaluation, Configurable) And Works According To The Closed-Circuit Principle. The Sensor Circuits Of This CM-MSS.51S Are Short-Circuit (Configurable), As Well As Interrupted-Wire Monitored And Can Be Reset Automatically, Manually Or Remotely After The Failure Has Been Removed. This Protection Relay Is Certified According To The ATEX Directive 94/9/EC And Is Equipped With A Reset / Test Button. The Non-Volatile Fault Storage, The Short Circuit Detection And The Accumulative Evaluation Can Be Enabled/Disabled Via DIP Switches. 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.

• · Thermistor Motor Protection Relays