The Siemens SENTRON 5SM3347-4 is a 4-pole RCCB rated 80 A at 40 °C and 45 °C, with a 30 mA Type B trip characteristic. Short-time delayed design coordinates with downstream devices.
Mounting position is unrestricted. Supply can enter from top or bottom — the SIGRES function remains powered even when switched off if fed from below. IP20 rating applies once installed in a distribution board with conductors connected. Silicon-free construction suits coating-sensitive environments.
Rated 80 A up to 45 °C ambient. Above that, derate linearly: 76.8 A at 50 °C, 70.4 A at 60 °C, and 64 A at 70 °C.