Relays are compact switching devices that use an electrical coil to open or close one or more sets of contacts, enabling a low power control signal to switch a higher power circuit. They provide electrical isolation between control and load and enable automation and remote control in a wide range of applications. Key benefits - Safe control of high power loads from low power circuits - Electrical isolation protects control electronics from load transients - Reliable, repeatable switching for automation and sequencing - Flexible configurations for different loads and control strategies Key attributes - Function: switches circuits on and off using a coil operated contact set - Compatibility: designed to work with standard control systems; model options determine coil voltage and contact arrangement - Size: compact form factor suitable for dense control panels - Material: robust housing and high quality internal contacts; refer to exact model datasheet for details - Performance: fast actuation, durable construction, suitable for repeated cycling Use scenarios - Industrial automation: from a PLC or microcontroller to switch a motor, heater, or other load - Building automation: control lighting, fans, or HVAC equipment from a central controller - Equipment interlock and safety circuits: enable safe power control and interlock sequences in machinery For exact coil voltage, contact rating, and form factor, refer to the specific model datasheet.