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Picture of CM-MSS.21S ABB Therm. motor protec. relay 1n/o+1n/c, 24-240VAC/DC 1SVR730722R1400

CM-MSS.21S ABB Therm. motor protec. relay 1n/o+1n/c, 24-240VAC/DC 1SVR730722R1400

The CM-MSS.21S belongs to the CM-MSS thermistor motor protection relay range. It operates with a rated control supply voltage of 24–240 V AC or DC and has a 1 n/c + 1 n/o (SPDT) output with contacts rated at 250 V or 4 A. It features one sensor circuit to monitor PTC temperature sensors and works according to the closed-circuit principle. The sensor circuit of the CM-MSS.21S is short-circuit as well as interrupted-wire monitored, and the relay will be reset automatically after the failure has been removed. This protection relay is certified according to ATEX Directive 94/9/EC. A sealable, transparent cover for protection against unauthorized changes is available as an accessory. The device offers screw connection technology with double-chamber cage connection terminals.
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Manufacturer: ABB
SKU: NSRN758
989.00 (SAR)
521.00 (SAR)
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Technical Specification
MRP (Indian Rupees) Not for Retail Sale
Compatibility Monitoring Relays
Rated Insulation Voltage (Ui) Measuring Circuit / Output Circuit 300 volt, Output Circuit 1 / Output Circuit 2 300 volt, Supply Circuit / Measuring Circuit 300 volt, Supply Circuit / Output Circuit 300 volt
Ambient Air Temperature Operation -25 ... +60 degree Celsius, Storage -40 ... +85 degree Celsius
Terminal Type Screw Terminals
Package Gross Weight 0.153 kilogram
Product Range Monitoring Relays
Invoice Description CM-MSS.21S Therm. motor protec. relay 1n/o+1n/c, 24-240VAC/DC
   
Max Operating Voltage UL/CSA Output Circuit 300 volt AC
Function 1 sensor circuit, Short-circuit detection, Non-volatile fault storage, Dynamic interrupted wire detection, Auto reset, ATEX approved
Extended Product Type CM-MSS.21S
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