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Siemens MICROMASTER 6SE6400-4BD21-2DA0

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6SE6400-4BD21-2DA0

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The Siemens 6SE6400-4BD21-2DA0 is a braking resistor specifically designed for the MICROMASTER 4 series. It operates within a voltage range of 380 to 480 Volts AC, with a steady power rating of 1.2 kW and can handle peak power up to 24 kW.

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Technical specifications for 6SE6400-4BD21-2DA0

ManufacturerSiemens
Product TypeBraking Resistor
Product LineMICROMASTER
Part Number6SE6400-4BD21-2DA0
UPC783087653368
Weight18.00 lbs (8.16 kg)
ForMicromaster 4
Voltage Range380 to 480 Volts AC
Power Rating1.2 kW
Peak Power24 kW
Protection ClassIP20
Resistance27 Ohms
CoolingNatural Convection
HousingMetallic
MountingVertical
Conductor SizeAWG 10
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The 6SE6400-4BD21-2DA0 is a braking resistor utilizing the MICROMASTER 4 technology from Siemens, tailored for controlled braking in motors. This component is compatible with input voltages ranging from 380 to 480 Volts AC, offering functionality within that specification. At 1.2 kW, its power rating ensures reliable operation during normal conditions, while it can briefly accommodate peak power surges of up to 24 kW.

Its internal resistance is rated at 27 Ohms, providing the necessary current regulation during braking operations. Designed with a protection class of IP20, this resistor is suitable for use in environments where dust and moisture are minimal. With dimensions of 515 mm in length, 270 mm in width, and a height of 175 mm, its compact design allows for vertical mounting in various setups. The resistance to overheating is managed by natural convection, a design that supports air circulation around the unit.

Although it has a weight of 7.4 kg, its metallic housing is robust, ensuring durability and stability during operation. To maintain effectiveness, it requires a conductor size of AWG 10. This braking resistor plays a crucial role in ensuring machinery operates safely and efficiently when rapidly stopping or decelerating, thereby enhancing the operational reliability of the MICROMASTER systems.