The ABB 2CDS200909R0002 is a shunt trip release for circuit breakers, used to remotely trip a breaker via a control signal. It sits in the accessory slot of compatible ABB molded-case breakers and connects to a separate control voltage source — typically 24 VDC or 230 VAC, depending on the specific coil variant ordered. When the coil energizes, it mechanically trips the breaker mechanism, which is the standard way to implement emergency-stop or remote-shutdown logic in a panel.
Mounts inside the breaker's accessory compartment — no DIN-rail space consumed, no extra panel cutout. The shunt trip adds a remote-trip function without changing the breaker's existing thermal-magnetic protection curve or interrupting rating. Wiring is straightforward: two control wires from a pushbutton, PLC digital output, or safety relay. Verify the coil voltage matches your control circuit before commissioning; the wrong coil voltage either won't pull in or will burn the coil.