The Type B+ RCD detects AC, pulsating DC, smooth DC, and high-frequency residual currents, making it suitable for variable-speed drives, UPS systems, and EV charging infrastructure where fault currents may not be sinusoidal.
Thermal derating and installation constraints
The 100 A rating holds at 30 °C ambient; at 40 °C it derates to 92.5 A, at 50 °C to 85 A, and at 60 °C to 77 A. In a sealed, uncooled enclosure — typical for a machine-tool panel or a solar combiner box — the installer must use the 40 °C or 50 °C column for conductor sizing and load scheduling. The unit occupies 11 modular width units (198 mm) on a DIN rail, with a 77 mm depth and 70 mm installation depth, so it fits standard 125 mm deep enclosures but requires 11 slots of rail space — plan the gland plate and busbar routing accordingly. Supply cord entry can be from top or bottom, which helps when the panel is pre-wired with fixed busbars. IP20 protection applies only when the distribution board is installed with connected conductors; the device itself is not rated for exposed wiring compartments.
Construction and compliance details
Touch protection is integrated on the terminals.