Description:Delay on Make • Time Delay Relay • Input Voltage : 19-288 VAC/VDC • Timing Range: 1 sec - 8 min • Mounting : Base Mount • Contact Configuration: NO • Output Current: 1 Amp
Internal potentiometer controls the timing period from 1 to 480 seconds.
Timing Adjustment
Timing is essentially linear between 1 and 480 seconds permitting the potentiometer to approximate the value of timing over its adjustment span of 270° to within 10% of the desired timing period.
Timing Tolerance
Maximum range of 480 seconds to within 15%.
Timing Variation
±2% at any combination of operating voltage and temperature.
Repeatability Of Timing Period
±1% nominal.
Recycle Time
50 milliseconds.
Output Rating
10mA to 1A inductive with inrush current to 25A for 8 milliseconds.
Output Voltage Drop in "ON" State
4 volts maximum.
Leakage Current in "OFF" State
0.6MA @24V, 1.8MA @120V, 11.4MA @240V.
Transient Protection
Maximum transient voltage protection is 6000 volts as delivered through a source resistance of 30 ohms with a maximum duration of 8.3 milliseconds.
Operating Temperature
-20°C to +85°C
Humidity
95% condensing
Terminations
Two (2) .25 Faston type.
Series Features
Model No. 438UPS Universal Potentiometer Time Capsule ®
Series Description:The model 438UPS (Universal Potentiometer Adjustable Time Capsule) is an all Solid State timer providing Delay on Make control to any load operating from 19 to 288V AC or DC. When power is applied, the 438UPS remains in the off state. When the preset time period has elapsed, the 438UPS switches on allowing the load to energize. The load remains energized as long as power is applied. Power must be removed for at least 50 milliseconds to reset timer.
