Products tagged with 'monitoring relays'

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.