Essential Components of a Terminal Block Relay Assembly.
There are 2 essential components of assembly that make a Terminal Block Relay:
1. Relay - This is the heart of this assembly. The relay is either of Electromechanical or Solid-state type which includes input (e.g. coil) and output (Contacts) components.
2. Socket - This is a housing with a Terminal Block-like profile that provides easy connection to the relay terminals (through screw or screwless terminals), arrangement for jumper connection for easy wiring between neighboring devices, and DIN rail mounting. Further, the same socket also includes a circuit, primarily which modifies an input signal to the lower level (as per relay coil requirement). In some cases, the circuit also makes room for coil surge protection, leakage current suppression, LED indication, etc. (We will talk about these features.)
