Description

 

The popularity of the original Model 438USA generated the requirements for Universal Switch Adjustable models with both shorter and extended timing ranges, along with special operating voltages. The model 438USA-X performs exactly as the 438USA, but with both timing and voltage ranges specified. By merely connecting the two terminals in series with any load circuit drawing between ten milliamperes and one ampere operating from the specified voltage range, the 438USA-X turns that load circuit into a delay on make timing circuit. Set the 10 DIP switches to the required delay, and apply operating voltage. “X” is replaced with a digit from 1 to 4

 

Type	Function	Industries
Timer	HVAC, Transportation, Railroad, General Machinery, Agriculture	Delay On Make

Specifications

Operating Voltage	19-288VAC or DC, non polarized.
Output Rating	10 milliamperes to 1 ampere inductive. Inrush to 25 amperes for 8 milliseconds.
Timing Mode	Delay On Make
Timing Ranges	0.1-102.4 seconds and 2-2048 seconds, see specifications for part numbering
Timing Adjustment	10 position Dip switch located between power terminals. Opening of any switch position adds its associated time value to the total timing period.

Documents and Downloads

Document	File Type	File Size	Download
Model No. 438USA-X Datesheet	PDF	251 KB

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