BCH Electric Limited supplies Treadle Operated Heavy Duty Foot Switch. BCH Electric Limited is an ISO 9001:2000 accredited company. BCH Electric Limited manufactures low voltage electrical and electronic controls. Treadle Operated Heavy Duty Foot Switch is designed to open and close either AC or DC pilot circuits. The contact mechanism of Treadle Operated Heavy Duty Foot Switch has single pole double throw twin break silver contacts [1NO +1NC] and double pole double throw [2NO + 2NC], which is completely enclosed in molded phenolic block. These contact blocks are mounted in a water and oil tight enclosure. These heavy duty foot switches are two position or three position spring return, front treadle operated.