The LS series torque limiters are safety devices that protect mechanical transmissions and relevant components that are subject to repeated overloads generated by abnormal operating conditions, thus preventing faults and damage that make the machine out of service and usually causedby unprotected parts. Operation relies on friction that keeps materials of different consistency under tension.The friction torque limiters allow immediate release fromthe excess torque applied to the transmission; they do notneed resetting and permit an immediate visual inspection of operating conditions