The CAD326BLS207 is a TeSys D control relay from Schneider Electric, built for switching control circuits in motor starter and automation panels. It gives you 3 normally-open and 2 normally-closed contacts — the 3 NO handle the main pilot-duty loads, the 2 NC are your feedback or interlock paths. Rated utilisation categories AC-15 and AC-14 cover solenoid and electromagnetic loads common in contactor coils and small valve actuators; DC-13 covers DC solenoids with similar inductive kick. That means this relay is sized for the control transformer secondary, not the motor power legs — it lives on the 24 V DC bus or 110/230 V AC pilot circuit. The 24 V DC low-consumption coil draws less from your power supply than a standard AC coil, which matters when you're stacking several relays in a panel and watching the 24 V bus budget.
Dimensions are 45 mm wide, 77 mm tall, 93 mm deep — the 45 mm width is a standard 2.5-module DIN-rail footprint, so it clips onto the rail alongside breakers and contactors without wasting space. Fire resistance to 850 °C (IEC 60695-2-1) and V0 flame retardance (UL 94) mean the relay won't sustain a flame in a fault scenario — important for railway and building infrastructure compliance. The TH protective treatment per IEC 60068 adds resistance to tropical humidity, so it's suited for coastal or high-moisture plant environments.