Finder series 27 panel mount step relays finder 272182300000 this finder 2721 is a 230v ac 10a electromechanical step relay which means that every time it is energised the contacts advance to the next state in a sequence this particular relay has two states open and closed and the contacts hold their position when the coil voltage is removed the 2721 version features a power limiter to enable the coil to be continuously energised finder 272182300000 10a 230vac step relay coil po