Type S magnetic contactors and starters are for motor control applications and 8903S lighting contactors are for lighting control applications. This Start Stop push button kit is for NEMA size 4 through 7 Type S contactors and starters or 8903SQ through 8903SZ lighting contactors in NEMA 1 enclosure. The push button kit is mounted into the knockout in the enclosure cover. This push button kit is UL listed and CSA certified. Prop 65: WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov - Compatible Products: 8502SBG2V02S; 8502SBO1V02S; 8502SCG2V03; 8502SDG2V02S; 8502SEG2V02S; 8502SFG2V02S; 8536SAG11V02; 8536SAG12V01S; 8536SAG12V02H308S; 8536SAG12V02H30S; 8536SAG12V02S; 8536SAG12V03; 8536SAG12V06; 8536SAG12V06H30; 8536SAG12V08; 8536SBA2V02S; 8536SBG1V02; 8536SBG1V02S; 8536SBG1V03; 8536SBG2V01S; 8536SBG2V02H30S; 8536SBG2V02S; 8536SBG2V03; 8536SBG2V03H30; 8536SBG2V06; 8536SBG2V06H30; 8536SBG2V08; 8536SBG2V08H30; 8536SBG2V08H30S; 8536SCA3V02S; 8536SCA3V08; 8536SCG3V02H30S; 8536SCG3V02S; 8536SCG3V03; 8536SCG3V03H30; 8536SCG3V06; 8536SCG3V06H30; 8536SCG3V08; 8536SCG3V08H30; 8536SDA1V02H30S; 8536SDA1V02S; 8536SDG1V02H30S; 8536SDG1V02S; 8536SDG1V03; 8536SDG1V03H30; 8536SDG1V06; 8536SDG1V08; 8536SDG1V08H30; 8536SEG1V02H30S; 8536SEG1V02S; 8536SEG1V03; 8536SEG1V06; 8536SGO1V06H30S; 8538SBA23V02S; 8538SBG11V02S; 8538SBG12V02S; 8538SBG13V02S; 8538SCA44V02S; 8538SCASP3; 8538SCASP6; 8538SCG12V02S; 8538SCG14V02S; 8538SCG14V81F4T; 8538SCG61V02; 8538SDASP3; 8538SDASP6; 8538SDG14V02S; 8539SBG43V81CFF4P1TX11; 8539SCASP3; 8903LG1000V02; 8903LG1000V04; 8903LG1200V02; 8903LG1200V04; 8903LG20V02; 8903LG20V02CP1; 8903LG20V04; 8903LG30V02; 8903LG30V04; 8903LG40V02; 8903LG40V04; 8903LG60V02; 8903LG60V04; 8903LG80V02; 8903LG80V04; 8903LH20V02; 8903LH60V02; 8903LXG1200V02; 8903LXG1200V02R6; 8903LXG20V02; 8903LXG40V02R6; 8903LXG60V04; 8903LXG80V02; 8903SMG1V02; 8903SMG2V02; 8903SMG2V03; 8903SMG3V02; 8903SPG2V02; 8903SPG2V03; 8903SPG3V02; 8903SQG2V02; 8903SQG2V03