What is a Dry Contact ?

What is a Dry Contact ?

Dry Contact Definition

A dry contact is defined as a switch that controls electrical circuits without supplying the power itself, relying on an external source.

Functionality

Dry contacts operate by opening and closing circuits, providing essential isolation and safety in electrical systems.

Dry vs. Wet Contacts

Dry contacts are used for isolation, while wet contacts use the same power source for control and power supply, lacking isolation features.

Applications of Dry Contacts

Typically found in low-voltage and safety-critical systems like alarms and industrial controls, demonstrating their versatility.

Real-World Examples

From solid-state relays to compressor contactors, dry contacts enable varied voltage control, proving crucial in diverse electrical applications.