NFD01.1-440-025 Bosch Rexroth Indramat
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MPN: R911263386
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The Bosch Rexroth Indramat NFD01.1-440-025 is a mains filter from the NFD Mains Filters series with a filter rated current of 25 Amps and a nominal voltage of 440 Volts. It features three input phases, a line frequency of 50/60 Hz, and has an overload capacity of 1.5 times rated current for one minute per hour. The filter offers a protection rating of IP10 and a rating temperature of 45 °C.
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Product Description:
The NFD01.1-440-025 is a three-phase mains filter manufactured by Bosch Rexroth Indramat and placed in the NFD Mains Filters series. Installed between the plant's supply network and its drive inverters, the filter suppresses high-frequency interference and keeps conducted emissions within the limits required for industrial automation environments. By placing the filter ahead of the drive input, the installation reduces switching noise that can return to the mains and affect nearby control equipment. This role is useful in cabinets that contain multiple converters, PLCs, and other sensitive electronics on the same supply.
This model has a continuous rated filter current of 25 A, allowing it to protect medium-power drive groups without saturation. It accepts 3 input phases, so it can be connected directly to standard three-phase distribution rails. The permissible line frequency is 50/60 Hz, ensuring compatibility with global utility grids. Dielectric integrity is verified through a line-to-line test of 2125 VDC for two seconds, confirming that insulation gaps and capacitors remain stable under transient overvoltages. In routine operation, the device handles a maximum line current of 23.6 A, which provides operating margin below the nominal current when ambient temperature rises.
The supply conductors may carry a nominal voltage of 440 V, and the filter can tolerate overloads up to 1.5 × IN for one minute each hour, which helps the equipment ride through short production surges without tripping upstream protection. Protective earth paths are evaluated with a PE test voltage of 2800 VDC for two seconds, confirming that the enclosure and ground capacitors can safely discharge fault currents. Continuous service is specified at a rating temperature of 45 °C; above this point, derating is required to avoid exceeding component thermal limits. The housing has an IP10 rating, so it must be mounted inside a closed cabinet to prevent accidental contact with live parts while still allowing free air circulation for convection cooling. Cabinet spacing should allow air to move around the filter body and terminals without obstruction.
Frequently Asked Questions about NFD01.1-440-025:
Q: What is the nominal voltage supported by the NFD01.1-440-025 filter?
A: The NFD01.1-440-025 mains filter is rated to handle a nominal voltage of 440 V.
Q: What is the maximum line current for the NFD01.1-440-025?
A: This mains filter is specified for a maximum line current of 23.6 A.
Q: How many input phases does the NFD01.1-440-025 support?
A: The NFD01.1-440-025 is designed for use with three input phases.
Q: What overload capacity does the NFD01.1-440-025 provide?
A: It offers an overload capacity of 1.5 times the rated current for up to 1 minute per hour.
Q: What is the protection rating of the NFD01.1-440-025 mains filter?
A: The protection rating of this filter is IP10, offering basic protection against solid objects.
