General
Nominal voltage	520 VAC
Frequency range	48 to 63 Hz
Nominal current	30 A
Leakage current	1,2 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
Voltage range	400–520 V AC
Operation temperature	−25 to +85 °C

The ABG NF-KC-30 from EPA is a three-phase high-performance EMI power filter, specifically developed for applications with increased electromagnetic compatibility requirements. The device is designed without a neutral conductor and features a book form, enabling compact installation in enclosures. It is rated for a nominal current of 30 A and can be operated in the voltage range of 400 to 520 V AC at frequencies of 50/60 Hz. The filter technology ensures very high attenuation of both symmetrical (differential mode) and asymmetrical (common mode) disturbances, improving network quality in industrial and technical installations.

Applications
The power filter is suitable for use in industrial plants, automation technology, and systems with sensitive electronics where high electromagnetic compatibility is required. It protects sensitive devices from disturbances caused by electrical power supply systems and reduces disturbance emissions into the network. The design without a neutral conductor makes it particularly suitable for installations with three-phase supply without a neutral conductor.

Functions and Equipment in Detail
The device features shock-protected terminals, ensuring safe and reliable connection of the conductors. The terminals are designed so that they do not pose a hazard to the operator during installation. The small footprint in book form allows space-saving installation, especially in enclosures with limited space. Mounting is achieved via integrated mounting brackets with holes, enabling secure installation on a vertical or horizontal surface.

Technology Explained Simply
The power filter operates based on the principle of electromagnetic compatibility (EMC) and is used to suppress high-frequency disturbances in the power network. Symmetrical (differential mode) attenuation reduces disturbances occurring between phases and the neutral conductor, while asymmetrical (common mode) attenuation suppresses disturbances between phases and earth potential. The filter components are dimensioned to safely handle a nominal current of 30 A during operation at 50°C. The leakage and earth currents are 1.2 mA and 1.3 mA respectively, which is relevant for operational safety.

Compatibility and Accessories
The power filter is designed for use in three-phase systems without a neutral conductor. It complies with standards EN 60939, UL 1283, and CSA 22.2 No. 8 and carries the CE and UL certifications. The protection rating IP20 safeguards against contact with moving parts and is suitable for use in enclosed enclosures. The climate category 25/085/21 allows operation at ambient temperatures from −25°C to +85°C, qualifying it for diverse operating conditions in industrial environments.

Mounting and Installation
Mounting is done via the integrated mounting brackets, which are fastened to a suitable surface inside the enclosure. The terminals are designed for connecting the three phase conductors. The book form of the device requires vertical or horizontal mounting, taking into account dimensions of 270 mm length, 50 mm width, and 85 mm height. Installation should be carried out in accordance with the regulations of the respective standards and safety guidelines.

Advantages in Operation
The ABG NF-KC-30 offers high disturbance suppression, increasing the reliability of connected devices. The compact design and shock-protected terminals simplify installation and maintenance. The CE and UL certifications, along with compliance with international standards, ensure adherence to safety and quality standards. The operating temperature of up to +85°C makes the device suitable even for demanding industrial environments.