DATA MCS 18, SSM 27 SWITCHES MOMENTARY ACTION BENEFITS Unique mechanical switches with tactile feedback Extremely high life time of 5 million switching cycles (SSM) Small mounting depth Various lettering options No mechanical stress of the switching elements due to magnetic switching principle (SSM) Front and rear tested to degree of protection IP 65 MCS 18 gold contacts MCS 18 silver contacts SSM 27 Electrical data Contact material gold silver AuNi Switching voltage mV min. 50 DC min. 5V DC min. 3V DC V max. 24 DC max. 48 DC max. 50 DC Switching current max. mA 80 125 50 Rated breaking capacity W 0.36 0.72 2.5 6 6 Lifetime (at rated breaking capacity) >10 >10 5 Mio. Initial contact resistance, new m <50 <50 * Initial contact resistance, after lifetime m <150 <150 * 8 8 Insulation resistance >10 >10 * Contact bounce time ms typ. 0.1 typ. 0.1 typ. 1 ESD resistance kV 16 16 16 Mechanical data Actuating force N 3 1 3 1 2.8 Contact travel mm 0.5 0.1 0.5 0.1 0.30 End stop strength N >50 >50 IK 03 Lifetime operations >1 Mio. >1 Mio. >5 Mio. Other data Solderability C/s 235 / 2 235 / 2 Soldering heat resistance C/s 260 / 5 260 / 5 Ambient temperature C -25 +60 -25 +60 -25 +85 Storage temperature C -25 +60 -25 +60 -25 +85 Degree of protection IP 65 IP 65 IP 65 Recommended torque N/cm 8 8 250 Materials Socket/Housing (SSM 27) Thermoplast PES Thermoplast PES Alu anodized Face foil PETP PETP PETP Bezel Thermoplast PBTP Thermoplast PBTP Alu anodized Contact material gold / silver CuZn 37, 3m Ni 2m Au CuZn 37, 2.5m Ag Au Ni Soldering aid tinned tinned * on request 19 FRONTPANEL SHORT STROKEDIMENSIONS MCS 18, SSM 27 SWITCHES MOMENTARY ACTION CONSTRUCTION MCS 18 SSM 27 DIMENSIONS DRILLING DIAGRAM M 27 CIRCUIT DIAGRAM 20