Siemens 3TK2805-0BB4 Safety Relay

The safety relay, also known as emergency stop relay, safety module, or monitoring relay, with type number 3TK2805-0BB4 from Siemens is an electrical relay in the field of electricity for monitoring safety functions in machines and systems. It has the dimensions 15 x 10 x 8 cm and weighs 0.9 kg. Safety relays are used for the reliable monitoring of emergency stop circuits, safety doors, light grids, and two-hand controls to protect people and machines from hazards. Typical applications can be found in mechanical engineering, automation technology, and process engineering, where high demands are placed on functional safety.