Siemens 3RU2116-4AB0 DIN Rail Mounted Safety Relay Module

Siemens 3RU2116-4AB0 is a Sirius Innovation thermal overload relay (size S00) for three-phase motor protection, rated for 11–16 A and typically used with motors up to about 7.5 kW at 400 V. It can be mounted on a DIN rail or on a panel surface using a compatible base (706-1699) and uses screw terminals for both the main and auxiliary circuits. The relay features a manual/automatic reset selector, a test function, and a status indicator to show current state. Key specs include an operating temperature range of -40 to +70 °C, isolation voltage of 690 V, and impulse withstand of 6 kV, reflecting its role in guarding motors against overload, phase failure, and phase asymmetry.