Dry Contacts Electrical

The contactor has a 24v coil in residential but the power supply through the contacts doesn t have any connection to the coil.

Dry contacts electrical.

A dry contact output on a device like a relay means that the contacts have no voltage or potential difference across the two contacts. A dry contact is a contact that is not initially connected to a voltage source. 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. A wet contact output on a device like a r.

The contacts simply provide an open or closed state to another device. Usually some other contacts or devices have the job of starting or stopping the primary. A dry contact is the synonym of volt free it is not wetted by a voltage source dry contact can refer to a secondary set of contacts of a relay circuit which does not make or break the primary current being controlled by the relay. It could be stand alone such as a pressure switch mounted on a boiler.

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. A common example would be the contacts in a compressor contactor.