A wound timer helps provide short-duration countdown control for a compatible electrical load, and this Intermatic version is an SPST 30-minute 20 amp model using the FF30MC reference. Countdown timers are useful because they allow a load to run for a chosen interval and then shut off automatically.This part has practical value because the 30-minute timing range is useful for applications that need a little more run time than a shorter-cycle timer but do not require a fully programmable control. A properly selected Intermatic timer contributes to dependable timed shutoff and easier operation of the connected equipment.This type of part is especially useful when the original timer has failed, become inconsistent, or no longer returns the load to off after the countdown period. That helps restore timed-use convenience with a direct replacement.Installed in the proper application, this wound timer helps support dependable countdown control and better long-term operating convenience. Intermatic SPST wound timer with 30-minute cycle and 20 amp rating Helps provide countdown timing for compatible electrical loads Useful when replacing a failed or inaccurate original timer Supports dependable automatic shutoff after the selected interval Improves control convenience and service confidence