General
Nominal voltage	520 VAC
Frequency range	48 to 63 Hz
Nominal current	63 A
Reduction range	2–16 kHz
Degree of protection	IP20
Construction	Metal housing
Approvals	CE, UL
Standards	EN 60939, UL 60939-3, CSA 22.2 Nr. 8, RoHS

The ABG NF-DAR-63-3 from EPA is a three-phase leakage current reduction filter, specifically developed for reducing high-frequency leakage currents in the range of 2 to 16 kHz. It supports electrical safety in installations where electronic devices or frequency converters generate increased leakage currents, which can impair the function of residual current circuit breakers (type B/B+). With a rated current of 63 A and a rated voltage of 520 VAC (±10%), the filter is designed for industrial and commercial applications in the voltage range of 400 to 520 V AC, 50/60 Hz. The frequency range specification of 48 to 63 Hz covers typical network frequencies and ensures stable operation under real operating conditions.

Applications

The filter is used in electrical installations where electronic loads such as frequency converters, LED lighting, or other non-linear consumers generate high leakage currents. These currents can affect the tripping sensitivity of residual current circuit breakers, thereby endangering the protective function. The ABG NF-DAR-63-3 reduces these high-frequency leakage currents by up to 90%, enabling the use of residual current circuit breakers type B/B+ in such installations. This is particularly relevant in modern industrial plants, building technology, and electrical installations, where safety depends on the correct function of residual current devices.

Functions and Equipment in Detail

The filter operates in the frequency range of 2 to 16 kHz, covering the typical range of high-frequency interference currents generated by electronic devices. The reduction is achieved through a special absorption and filtering technology that intercepts and reduces interference currents in the network. The maximum reduction reaches up to 90%, representing a significant improvement in network quality and the protective function of residual current circuit breakers. The metal housing design provides mechanical stability and sufficient protection against mechanical impacts. The protection class IP20 safeguards against contact with moving parts and prevents entry of solid foreign objects larger than 12.5 mm, but does not protect against water or dust.

Technology Explained Simply

The filter uses passive components such as coils and capacitors to absorb and dampen high-frequency leakage currents. This technology is particularly effective at frequencies above 2 kHz, where interference currents are generated by electronic switches and frequency converters. The reduction occurs without affecting the rated voltage or rated current in the network, so the electrical supply to connected devices remains unchanged. The filtering technology is designed to improve network quality without impairing the performance of the installation. The rated voltage of 520 VAC (±10%) allows use in standard three-phase networks with voltages from 400 to 520 V.

Compatibility and Accessories

The ABG NF-DAR-63-3 is specifically designed for combination with EPA EMC network filters. This combination enables more comprehensive interference suppression, especially in installations with complex EMC requirements. Using it with EMC network filters can enhance the overall performance of interference reduction and further improve network quality. Conformity with standards EN 60939, UL 60939-3, and CSA 22.2 No. 8 ensures compliance with international safety and quality standards. The CE and UL certifications confirm suitability for use in Europe and North America.

Mounting and Installation

The filter is housed in a metal enclosure with dimensions 306 × 140 × 60 mm (L×W×H). Mounting is done in the typical manner for industrial filters, usually in enclosures or distribution boxes. The protection class IP20 requires installation in enclosed spaces, as there is no protection against water or dust. The connection terminals are designed for cables within the rated current range of 63 A. Installation is done in series with the electrical load, ensuring correct polarity and compliance with electrical standards.

Operational Advantages

By reducing high-frequency leakage currents by up to 90%, the function of residual current circuit breakers type B/B+ is ensured in installations with increased interference currents. This increases the safety of the electrical installation and prevents false tripping or failure of the protective function. Compatibility with EPA EMC network filters expands application possibilities and enables customized interference suppression. Conformity with international standards and certifications ensures reliability and safe operation in various markets.