KNK03.1A-NR-W0010-P-U226-A4-NNNN Bosch Rexroth Indramat
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MPN: R911375689
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The Bosch Rexroth Indramat KNK03.1A-NR-W0010-P-U226-A4-NNNN is a mains filter with integrated mains choke from the KNK Mains Filters series. It features a nominal current of 9.5 Amps and operates with a supply voltage range of 3×AC 380 V to 3×AC 500 V. The filter uses forced cooling with an external heat sink and attached fan, and offers an IP65 protection level.
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Product Description:
The KNK03.1A-NR-W0010-P-U226-A4-NNNN mains filter is manufactured by Bosch Rexroth Indramat and belongs to the KNK Mains Filters series 3. It is a Design 1 unit intended for standard applications in which regenerative drives return energy to the supply network while limiting high-frequency noise. In drive systems that regenerate during braking, this filter helps keep returned energy compatible with the upstream power system. The unit combines filtering stages and an integrated choke so three-phase converters can operate across industrial voltage ranges with reduced conducted interference. It is suited for installations where drive-generated switching noise must be controlled without adding multiple separate filter components.
The filter accepts a supply range of 3×AC 380 V -10% to 3×AC 500 V +10%, which allows connection to many common industrial power systems. It carries a nominal current of 9.5 A, and heat is removed by forced cooling with an external heat sink and attached fan. The protective-earth leakage path includes 226 nF of capacitance, which helps suppress common-mode noise. Its EMC classification is Category C3 via DIN 61800-3, making it suitable for industrial low-voltage environments rather than public utility networks. This arrangement supports steady operation when regenerative converters switch between motoring and braking.
The housing has an IP65 rating, so the assembly can be mounted near machinery without a separate enclosure. This is useful when the filter is installed close to the drive or machine frame instead of inside a large centralized cabinet. The unit is intended for regenerative devices only, which helps prevent use on passive rectifier feeds. Its circuit supports the standard application profile by reducing differential and common-mode emissions during four-quadrant operation. As a mains filter with an integrated mains choke, the KNK03.1A model replaces separate reactors and capacitors and helps keep panel layouts compact. Using one housing instead of separate choke and capacitor assemblies can also reduce wiring complexity.
Frequently Asked Questions about KNK03.1A-NR-W0010-P-U226-A4-NNNN:
Q: What is the nominal current rating for the KNK03.1A-NR-W0010-P-U226-A4-NNNN mains filter?
A: This model is rated for a nominal current of 9.5 Amps during standard operation.
Q: What supply voltage range is supported by the KNK03.1A-NR-W0010-P-U226-A4-NNNN?
A: The mains connection voltage supports a range from 3×AC 380 V -10% up to 3×AC 500 V +10%.
Q: What is the protection level for the KNK03.1A-NR-W0010-P-U226-A4-NNNN?
A: This filter provides a protection level of IP65, making it resistant to dust and water ingress.
Q: What cooling method is used in the KNK03.1A-NR-W0010-P-U226-A4-NNNN mains filter?
A: It features forced cooling using an external heat sink with an attached fan.
Q: What kind of supply system is the KNK03.1A-NR-W0010-P-U226-A4-NNNN filter designed for?
A: The KNK03.1A-NR-W0010-P-U226-A4-NNNN is intended for use with regenerative devices only.
