Product Description:

The 17.DR.B08-5941 is an input choke produced by KEB within the DR Motor Input Chokes series. Installed between the electrical mains and a drive, it provides line impedance that smooths current waveforms and damps voltage transients in industrial automation panels. By moderating the interaction between three-phase utility power and inverter front ends, the choke contributes to reduced electromagnetic interference and a longer service life for connected motion equipment.

It is designed for three-phase installations and operates safely within a mains frequency range of 45–65 Hz. The core inductance of 0.59 mH introduces the reactive impedance required to attenuate high-frequency components while still allowing steady-state power flow. The choke is rated for continuous line currents up to 50 A, and its insulation system accommodates supply voltages of 400 V AC. Copper terminals accept conductors with cross-sectional areas up to 10 mm², simplifying connection to standard drive cabling. Cabinet planning is assisted by its compact dimensions of 219 × 100 × 200 mm, which allow the choke to fit within common enclosure depths. These electrical and physical properties make the unit suitable for medium-power drives used with pumps, compressors, and conveying axes.

Thermal behavior is characterized by a power dissipation of 97 W, which must be considered when configuring enclosure ventilation to keep the winding temperature within acceptable limits. Under nominal load, the choke introduces a voltage drop of 4 % across its terminals, which is suitable for most standard drive inputs. Mechanical mounting is supported by fixation centers measuring 201 × 71 mm and elongated slots measuring 7 × 12 mm. The elongated slots permit precise alignment on a backplate during installation. Despite its steel core, the device weighs only 8 kg, allowing it to be secured on vertical panels without excessive reinforcement.