Amperite Co. Time Delay Relay, Spst-No, 100Min; Time Min Amperite 120A1-100MST1

The ST1 series is a solid state delay-on-make timer with 1 ampere continuous load current, CMOS digital circuitry, and a normally open relay configuration. It has a black plastic epoxy-sealed enclosure measuring 2 x 2 x 3/4 inch with center hole mounting and two or four 1/4 inch quick connect terminals. Input voltage options include 120V AC, with timing ranges from 1 to 100 minutes set using an external resistor. Timing tolerance is ±10% for fixed units and repeatability is ±2%. The device operates from -40°C to +65°C and meets UL File #E96739(M) and CSA File #LR62586. The part number 120A1-100MST1 corresponds to a 120V AC input with a 1 to 100 minute timing range, consistent with the series specifications.