STI 42998-0030 Relay Assembly, also listed as STI Relay Assembly 42998-0030, is a relay assembly used to switch electrical loads within control circuits. In operation, a control signal energizes the relay coil to open or close its contacts, providing a safe interface between controllers and higher‑power devices in industrial environments. The part is identified by the model number 42998-0030 for precise sourcing and maintenance.
