The Siemens 4EU4321-6DA00-0A is a 3-phase commutating choke for converter applications, rated for 720 A continuous with a maximum of 800 A and a peak current capability of 1 000 A. It operates at 750 V AC, 50 Hz, and carries an inductance of 0.000055 H. The 4% relative inductive voltage drop at rated current is the key parameter for sizing the DC-link — it determines how much voltage headroom the drive loses across the choke under load.
Sizing and thermal reality
Total power loss at rated load is 480 W coil plus 285 W iron core. At IP00, heat dissipates into cabinet air — plan forced ventilation if ambient exceeds 40 °C.
Lifecycle and sourcing posture
This part carries a mature lifecycle status. It is sourced and quoted to order against an RFQ through independent distribution.
Physical fit and connections
Dimensions: 0.46 m wide × 0.435 m high × 0.265 m deep. Main circuit connections are flat-type terminals. IP00 rating means no integral enclosure.