? Protech engineering & controls pvt ltd offers star-on delay
timers (type g22-sod) especially designed for time delay in a
variety of applications, where timers remain in the circuit for
start delay time only. These delay timers have two contacts, one
used for latching the timer supply (instantaneous), and the other
contact will be on for 100 msecs. To start the contactors they hold
through the contactors they hold through the contactors contact
itself. Both the contacts become off thus the timer coil is also
out of the circuit, increasing the virtual life of timers. These
timers are perfectly apt for time delay in starter and capacitor
switching application