Dry Contacts Electrical

Wet contacts are automatically given power when the switch has power and the main advantages are the simplicity of wiring and the consistency of voltage levels making.

Dry contacts electrical.

The contacts simply provide an open or closed state to another device. It could be stand alone such as a pressure switch mounted on a boiler. A dry contact output on a device like a relay means that the contacts have no voltage or potential difference across the two contacts. Basically dry contacts is a switch that has no shared power source or supply integral to the control.

Dry contact may mean any of the following in electronics. A common example would be the contacts in a compressor contactor. A dry contact is a contact that is not initially connected to a voltage source. A wet contact output on a device like a r.

Or if the contact is mounted as part of an electrical unit that has a power source then the dry contact has no pre wired electrical connection to that power source. Dry contacts are not directly provided with power from the switch and are used in switching devices which provide isolation and give a wide variety of output voltage options.