22.DR.B18-2241 KEB
Wake Industrial LLC is not an authorized distributor of this product.
The KEB 22.DR.B18-2241 is part of the DR Motor Input Chokes series and is rated for a current of 150 Amps at 400 Volts AC. It supports a drive power of 55 kW and has an inductance of 0.20 mH with a conductor cross-section of 95 mm². The choke measures 316 by 200 by 330 mm and weighs 24 kilograms.
Internal Product Review
The 22.DR.B18-2241 is a KEB DR motor input choke engineered for 400 V AC systems with a 150 A rated current. The 3-phase design and 0.20 mH inductance support effective line conditioning and stable drive operation. A strong choice for demanding installations, especially with 55 kW drive compatibility.
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Product Description:
The 22.DR.B18-2241 is a three-phase motor input choke produced by KEB within the DR Motor Input Chokes series. As an AC line reactor, the device is wired between the plant mains and a drive inverter to limit harmonic currents, smooth the supply waveform, and protect the rectifier stage from steep current transients. By inserting inductance ahead of the DC bus charging circuit, the choke lowers peak inrush and improves the power quality experienced by motors and upstream distribution equipment. This arrangement also reduces electrical stress on the inverter input stage during normal switching and power-up conditions.
It is sized for drives with an output of up to 55 kW, matching the continuous power rating of many medium-power inverter cabinets. The choke carries a nominal line current of 150 A, which establishes the thermal limit for the copper windings during continuous operation. Its core and winding combination provides an inductance of 0.20 mH, creating the impedance needed to filter high-frequency components generated by the rectifier. The insulation system supports a line voltage of 400 V AC, enabling direct connection to common industrial power systems. Its three-phase configuration supports balanced operation on three-wire supply networks without a neutral conductor. Proper coordination with upstream protective devices helps prevent excessive thermal loading during abnormal current conditions.
Aluminum terminals accept cables with a cross-sectional area of 95 mm², allowing the line reactor to be installed without additional terminal adapters. The design produces a short-circuit voltage of 4%, indicating the expected supply voltage drop when the choke carries its rated load. Under full load, the magnetic circuit dissipates 205 W, and this power loss must be considered when arranging enclosure ventilation. The assembly weighs 24 kg and measures 316 × 200 × 330 mm, allowing placement inside many 600 mm-deep control panels alongside contactors, circuit breakers, and filter modules. Adequate mounting support is necessary to carry the unit securely, while sufficient clearance around the windings allows heat to escape into the surrounding cabinet air.
