The Siemens SIRIUS 3RU6900-1C is a cable release with holder designed specifically for the RESET function on 3RU6 overload relays. It spans the S00 and S0 frame sizes, meaning it covers the most common compact overload relay footprints in the SIRIUS line. The 600 mm cable length gives you flexibility to mount the reset actuator on a panel door or enclosure front while the relay itself stays inside the control cabinet.
The 600 mm length is the pull cable reach from the relay body to the reset button — enough to route through a cable gland or around a DIN-rail bundle without excess slack. The mounting diameter of 6.5 mm matches the standard knock-out or drill size for a panel-mount reset button. The substance prohibitance date of 03/01/2017 confirms RoHS compliance through that cut-off.