Trip threshold of the residual current monitoring, and the second user setting in this chapter: device settings, “residual current limit”, from #3 Master upwards, see Section 9.2, “Device settings”. It is offered in steps – 30, 50, 200, 500 and “off” (65535). Measurement is per group of six channels; what happens on tripping is described in Section 6.10, “Groups, substitution and failures”.