Dry-Contact Relay or Power-Monitoring Relay: They Solve Different Jobs
Choose a relay from the circuit it must interface with, not from a similar product name. Dry-contact switching and power measurement are separate requirements that need an electrician’s model-level assessment.
State the intended interface
Describe whether you are switching a powered load or providing a contact to another controller. Those tasks can require different electrical arrangements, and a monitoring feature does not establish interface suitability.
Match the actual documentation
Provide the controlled equipment’s interface instructions and the relay model. Have the installer assess permitted voltage, enclosure and wiring requirements rather than selecting a module from a simplified shopping-page diagram alone.
Quote a tested result
Include installation, a manual-control path and a documented commissioning test. The useful purchase is an approved control arrangement with a clear operating limit, not a loose module whose application is still unspecified.
Before you buy
- Controlled interface documentation
- Exact relay electrical ratings
- Qualified installation and test