438U

The 438U is an universal voltage in-line Solid State Timer for delay-on-make and interval control of load devices such as relays and solenoids up to 1A maximum. Connect the proper timing resistor across the center two terminals (on adjustable models) and apply operating voltage. When the operating voltage is applied a small amount of current will flow through the load and the timer. At the end of the delay period, the model 438 turns ON and full load current is permitted to flow. To recycle, remove the operating voltage for at least 50 milliseconds.

• ±20% Voltage tolerance
• 10% Tolerances on fixed timing
• ±1% at Stabilized operating voltage temperature repeatability of timing period
• 1500V RMS all terminals to case Dielectric
• -20 to 85°C Operating temperature range

Applications

Industrial