What this choke does in the circuit
The SIDAC 4EM5215-0CB00 is a single-phase DC smoothing choke rated for 21.5A maximum continuous DC current, with a nominal rated value of 19.3A at 600V operating voltage. Its 6.5mH inductance filters ripple from DC bus lines in drives, converters, or power supplies operating up to 300Hz. The 22.36W total power loss (21.6W coil + 0.762W iron core) at rated load means the choke dissipates that heat into the enclosure — plan for ventilation or derating if ambient hits the 50°C rated limit. Thermal class B insulation (130°C) per IEC 60085 gives reasonable headroom for continuous duty in a 50°C ambient. IP00 means no ingress protection — this is an open-frame component for installation inside a grounded metal enclosure, not for washdown or outdoor locations.
Footprint is 0.121m wide by 0.128m deep by 0.131m tall — roughly 121 x 128 x 131 mm. That is a compact block for a 21.5A DC choke, but IP00 means no mounting base or DIN-rail adapter is included; expect to bolt it directly to a panel or chassis using the core clamp or through-holes (not specified, but typical for this class). Verify clearance for the screw/tab terminals on the top or side before laying out the enclosure backplate.