Description

The ARF520D is a 3-module AFDD plus RCBO device rated at 20A with B-curve tripping, 10 kA breaking capacity, and 30mA Type A residual current sensitivity. It provides arc fault detection, overcurrent protection, and earth leakage protection in one integrated device.
The 20A rating makes the ARF520D suitable for circuits supplying larger domestic appliances or higher-demand branch circuits where both RCD and AFDD protection are required. The B-curve ensures reliable tripping under general wiring conditions.
Operating at 230/240V AC, the device installs on DIN rail in a 3-module slot and is compliant with IEC 62606 and IEC 61009. It is IP20 rated and RoHS compliant.