What this handle does on your MCCB
The G12ROTDS is a direct-mounted, front-operating rotary handle for the GoPact MCCB 125 range. It gives you a mechanical switch interface that extends the breaker's toggle outside the panel cover — so the door stays closed when you operate it, maintaining the IP20 finger-safe enclosure. The grey handle accepts up to three padlocks in the OFF position, locking the breaker in a de-energised state for LOTO (lockout/tagout) compliance during maintenance. That's a standard safety practice on control panels where you need to positively isolate a circuit before anyone reaches inside.
Direct mount means the handle couples directly to the MCCB's rotary mechanism — no linkage kit or adapter plate needed. Front location means it protrudes through a cutout in the panel door, so the handle and the door interlock are one assembly. That's typical for the inside-face of a control panel; the overall enclosure rating depends on the cabinet, not the handle alone.