... SPDT , 2)SPST Normal Open , 3) SPST Normal Close SPDT/SPST Normal open or Normal close Micro switch and inching switch products Series : ... 1) Certificates: SEMKO, UL approval2) SPDT/SPST(normal open and close),4type handles,3 types terminals3)Specifications 1)Contact Resistance ≤20m ... ≥100MΩ ,at 500 VDC 3)Dielectric Strength 1000VAC/ 1minute 4)Electrical Life ≥100000 cycles (UL) ≥10000 cycles (SEMKO) ...