Control Relays

SIRIUS Function Relays, Interfaces & Converters @ Siemens

SIRIUS Contro Relays Family

The SIRIUS family of relays offers solutions for monitoring, switching and timing applications, and for the conversion of analog signals

Monitoring relays have a solution for you, whether its temperature, voltage, current, speed or level. Simple configuration and selectable input sensors make these units a snap to implement.

Switching relays provide solutions in the forms of compact housing and DIN rail mounting, while also being able to accomodate high current switching capacities.

Timing relays offer flexible input voltages and selectable time ranges. Their versatility often allows a single unit to match most industrial applications.


Interface converters are used for the conversion of analog signals from field devices to match control system signal levels.  For the purposes of electrical isolation, amplification and signal matching, coupling relays and transformers are required between the control system and the peripherals. Sirius Interface converters off a compact size and convenient DIN rail mounting. Several models offer selectable input and output ranges. Manual override switches are also available to put a unit in bypass mode. Bypass mode disables the process input signal allows manual adjustment of the output signal. Making these products ideal for analog signal simulation.


Plug-in Relays come in basic, premium, and bifurcated styles in a wide range of amperages to ensure a solution for every application.  Optional accessories include LEDs, mechanical flag indicators, push-to-test buttons, and latching hold down doors.

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