MS27217-1, B5-21141,Otto Controls basic switch is subminiature in size and feature 10 amps switching capability of 100,000 cycles. It is a SPDT-DB (double break) with form Z circuitry. Mechanical life is one million cycles. The molded housing is rugged and structurally stable. The terminals are sealed against solder flux entering the switch and are bright acid tin plated for excellent solderability.