2-36 M60 MOTOR PROTECTION SYSTEM – INSTRUCTION MANUALSPECIFICATIONS CHAPTER 2: PRODUCT DESCRIPTION2LED INDICATORSFunctions: 5 device status indicators9 event cause indicators8 user-programmable pushbutton indicatorsPUSHBUTTONSType: membraneFunctions: 5 bottom Tab pushbuttons and 1 Home pushbutton for page recall4 directional, 1 ENTER, and 1 ESCAPE pushbutton element selection10 side pushbuttons for power system element controlRESET pushbutton8 physical user-programmable pushbuttons, 8 graphical interface pushbuttonsINGRESS PROTECTIONIP code: IP20 front, IP54 front with graphical front panel, IP10 back2.5.12 EnvironmentalAMBIENT TEMPERATURESStorage temperature: –40 to 85°COperating temperature: –40 to 60°C; the LCD contrast can be impaired at temperatures less than –20°CHUMIDITYHumidity: operating up to 95% (non-condensing) at 55°C (as per IEC60068-2-30 variant 1, 6 days)OTHERAltitude: 2000 m (maximum)Pollution degree: IIOvervoltage category: IIIngress protection: IP20 front, IP10 backNoise: 0 dB