The auxiliary contact iOF/SD+OF is a 2-in-1 product with a mechanical selector switch. It can be either SD+OF or OF+OF. The operating current ranges from 2 mA to 100 mA at a frequency of 50 Hz to 60 Hz, with 24 VAC to 240 VAC and 24 VDC to 220 VDC. It features a double on/off or fault signaling contact and is designed for installations in small commercial enterprises, buildings, critical infrastructure, healthcare, industry, and data centers. This electrical accessory is compatible with the Acti9 series such as iC60, iID, iDPN ARC, iDPN Vigi, iDPN Vigi ARC, iSW, iC60, and iID double connection residual current devices.

The screw terminal connection at the bottom allows for rigid copper cables with a cross-section of 1 mm² to 4 mm². For flexible copper cables, the screw terminal connection accommodates a cross-section of 0.5 mm² to 2.5 mm². The connection allows for a cross-section of 2.5 mm² for two cables. The rated insulation voltage (Ui) is up to 500 V, and the rated impulse voltage (Uimp) is 4 kV.

The dimensions are (W) 9 mm x (H) 90 mm x (D) 73 mm. The product color is white (RAL 9003). The pollution degree is 3, and the degree of tropical suitability is treatment 2. The tightening torque for the connection is 1 N·m (bottom) for the screwdriver type PZ1. According to the standard IEC 60529, the IP protection rating is IP20. The operating temperature ranges from -25 °C to +70 °C, and the storage temperature ranges from -40 °C to +85 °C. This product complies with the standards EN/IEC 60947-5-1 and EN/IEC 60947-5-4 and is certified with CE and UKCA marks.