What this MCB does on the panel
Sealable for tamper-proof installations.
Snap-on DIN rail mount, 18 mm width, 76 mm depth, 90 mm height. Installation depth 70 mm. Ambient operating range -25 to +45 °C, storage -40 to +75 °C. IP20 with conductors connected — suitable for enclosed panelboards, not for wet or outdoor exposure without an outer enclosure. Overvoltage category III, energy limiting class 3. Tightening torque 2.5 to 3 N·m on the screw terminals. Halogen-free and silicon-free construction for environments sensitive to outgassing.
The 3 A rating and C-curve define the load it protects: sustained loads up to 3 A, with magnetic trip at 15 to 30 A. The 1-pole form factor (1P) switches only the phase; neutral is not switched. Multi-phase operation rated to 440 V AC maximum.