Description

 

The model 438U (Universal Time Capsule) is an all Solid State timer providing Delay on Make control to any load operating from 19 to 288V AC or DC. The time delay is adjustable from 1 to 1000 or 2-2000 seconds depending on the model selected, and is obtained by connecting a fixed resistor or potentiometer across the middle terminals (10k per sec). When power is applied, the 438U remains in the off state. After the preset period has elapsed the timer switches on energizing the load.

 

Type	Function	Industries
Timer	Delay On Make	HVAC, Transportation, Elevator-Escalator

Specifications

Operating Voltage	19-288VAC or DC, non polarized input.
Frequency	50 / 60 HZ, for AC input voltages.
Output	10 milliamperes to 1 ampere inductive. Inrush to 25 amperes for 8 milliseconds.
Timing Mode	Delay on Make.
Timing Range	1-1000 and 2-2000 Seconds.
Timing Tolerance	+/- 10% of calculated value.
Timing Adjustment	Connect resistance (10K per second) across two center terminals. Unit has a 1 second internal delay.
Timing Repeatability	+/- 1% at stabilized operating voltage and temperature.

Documents and Downloads

Document	File Type	File Size	Download
Model No. 438U Datesheet	PDF	429 KB

© 2023 Relay Specialties, Inc.
17 Raritan Road, Oakland, NJ 07436 | 800-526-5376
Created By: G.Dezines