What this MCCB does on the line
That simplifies panel sizing when the MCCB sits near transformers or other heat sources. Ground-fault monitoring uses summation current formation on L + N conductors, so it detects leakage without a separate GFCI module. The communication function allows integration with building management or power monitoring systems over the SENTRON bus.
Sizing and selectivity notes
With an insulation voltage rating of 800 V and interrupting capacity that drops to 3 kA at 690 V, this MCCB is optimized for 240–500 V systems where the fault current is highest. The 121 kA at 500 V still covers most industrial motor control centers. On a 690 V line, the 3 kA rating limits it to low-fault applications or downstream of a current-limiting fuse.
Dimensions are 181 mm height, 140 mm width, 86 mm depth.