It protects a single-phase final subcircuit against earth leakage (Type A, sensitive to pulsating DC fault currents) and overcurrent/short-circuit (B-curve magnetic trip). The 32 A rating at 30 °C is the headline figure; derate to 30.4 A at 40 °C and 24.64 A at 70 °C, so the continuous load must be sized against the installed ambient, not the nameplate.
Width of 36 mm (2 modular units) fits standard DIN-rail enclosures. Mounting position is unrestricted — install upright, sideways, or inverted without derating. Supply cord entry can be from the top or bottom, simplifying busbar routing in a distribution board. Rated for overvoltage category III (fixed-installation level) and pollution degree 2. IP20 protection applies when the distribution board is installed with conductors connected — the device itself is not rated for exposed or washdown environments.