Macromatic Industrial Control & Monitoring Products

Article #kba120arp
 
Using Alternating Relays with DC Input Voltages
 
Issue
Do your Alternating Relays work on dc voltages? Your catalog only mentions ac.
 
Solution/Resolution
In our current catalog, we list only ac input voltages for all the ARP Series Alternating Relays.  This was done because the normal application of an alternating relay is in ac pump control or HVAC compressor control.

However, in those special applications where someone would like to use our alternating relays on dc voltages, the standard catalog-listed products will work just fine.  The only thing to watch is the polarity of the connection.  If you look at the wiring diagrams for alternating relays, you will notice that the control switch is connected between L1 and another terminal.  If you are using dc input voltage, the control switch must be connected to the "+" wire of the dc power supply.

socket socket socket

SPDT

DPDT

DPDT Cross-Wired

For more information, please contact Macromatic Controls.

 
This article applies to the following Macromatic products:
 
  • All ARP Series
 

Last Reviewed:  02/27/2006