The ABB 2CDS200936R0003 is an auxiliary contact block with 2NC contacts, 8.8 mm wide, designed for the S800 series miniature circuit breakers. It snaps onto the breaker side to add a normally-closed signal contact for status feedback or safety interlock circuits in the panel.
Key specs and what they mean on the panel
At 8.8 mm wide, this block adds a contact without eating up a full module space on the DIN rail — useful when you're packing breakers tight and need a dry contact for a PLC input or a shunt trip. The 2NC configuration means the contact is closed in the breaker's normal (ON) state and opens when the breaker trips or is manually switched off, so it gives a positive off-signal for safety circuits or remote monitoring.