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SERIES SRB 301 MCGeneral Purpose Safety Controller(for dry contact and PNP-type input monitoring)TECHNICAL FEATURESDescriptionThe Model SRB 301 MC is a “general-purpose” unitdesigned for use with safety devices having Normally-Closed (N.C.) or PNP-type switching outputs. It is equippedfor connection of one input device in single- or dual-channelconfiguration. In addition it features feedback monitoring ofpositive-guided controlled loads, automatic or manual resetand optional cross-short recognition.Front ViewInput Voltage24 V AC/DC# Discrete Input Devices 1 (Single or Dual-Channel)MonitoredMonitored ContactN.C. (Dry Contacts) orConfigurationPNP-switchingNumber & Type Safety 3 N.O. (Dry Contacts)OutputsNumber & Type Auxiliary 1 N.C. (Dry Contacts)(Non-Safety orSignalling Output)Typical Input Devices • E-stops (N.C.)Monitored• Interlock switches (N.C.)• Devices with PNP semiconductoroutputsType of Reset(Selectable)Feedback MonitoringLED DisplaysConformity to StandardsStop Category 0• Manual (24 V Leading Edge)• AutomaticYesGreen LEDs for:• K1 (safety relay 1)• K2 (safety relay 2)• Ui (voltage beyond internal fuse)•UB (voltage at input terminals)UL, CSA, BG (CE-compliant)Safety Control Category 4Rating Per EN 954-1Selected Features• Cross-short recognition(Selectable w/dip-switch)• Screw terminals• Feedback monitoring• Electronic fuseAVAILABLE MODELSModel NumberOperating VoltageSRB 301 MC24V AC/DC342