General
Nominal voltage	520 VAC
Frequency range	48 to 63 Hz
Nominal current	42 A
Leakage current	1,3 mA
Degree of protection	IP20
Construction	Metal housing
Mounting	mounting brackets with holes
Climate category	25/085/21
Approvals	CE, UL
Standards	EN 60939, UL 1283, CSA 22.2 No. 8, RoHS

The ABG NF-KC-42 is a three-phase high-performance EMI power filter from the brand EPA, designed for applications with increased electromagnetic compatibility requirements. The device is configured without a neutral conductor and features a book form, enabling compact mounting. It is intended for use in industrial and technical installations where effective suppression of disturbances in the power supply network is required to ensure the functionality of sensitive electronic devices.

Applications
This power filter is suitable for installations operating within a voltage range of 400 to 520 V AC and a frequency of 50/60 Hz. It is particularly appropriate for environments with high electromagnetic interference, such as production facilities, machine building, or applications involving frequency converters. The design without a neutral conductor makes it especially suitable for applications with pure three-phase systems.

Functions and Equipment in Detail
The ABG NF-KC-42 provides very high attenuation of both symmetric (common-mode) and asymmetric (differential-mode) disturbances. These characteristics ensure that high-frequency disturbances entering through the power supply network or generated by connected devices are effectively reduced. The shock-protected terminals ensure safe mounting and connection, minimizing the risk of electrical accidents.

Technology Explained Simply
The filter operates in the frequency range of 48 to 63 Hz and is rated for a nominal voltage of 520 VAC (±10%). The nominal current is 42 A at an ambient temperature of 50°C. The leakage and earth currents are 1.3 mA and 1.4 mA respectively, indicating low electrical load on the protection system. The metal housing provides mechanical stability and protects internal components. The climate category 25/085/21 allows operation at temperatures from −25°C to +85°C, ensuring broad applicability in various environments.

Compatibility and Accessories
The power filter is compliant with standards EN 60939, UL 1283, and CSA 22.2 No. 8 and carries the CE and UL certifications. These certifications confirm compliance with international safety and performance standards. The protection rating IP20 protects against contact with solid objects larger than 12.5 mm and is suitable for use in enclosed spaces. Mounting is achieved via brackets with holes, enabling secure installation on panels or switchboards.

Mounting and Installation
The book form of the filter allows space-saving installation. The mounting brackets with integrated holes facilitate installation on standard mounting surfaces. The shock-protected terminals are designed for safe and reliable connections. Mounting is typically done via screw connections, with electrical connections to be made according to the regulations of the respective installation.

Advantages in Operation
Thanks to its high attenuation capability for common-mode and differential-mode disturbances, the ABG NF-KC-42 ensures stable power supply and reduces the risk of interference in connected devices. The robust construction and wide temperature resistance increase reliability during continuous operation. The small footprint and compact design facilitate integration into existing switchgear installations.