The LV848592 is a safety shutter and locking block for the MasterPact MTZ2 drawout chassis, covering both 3-pole and 4-pole configurations. It includes shutter position indication so the panel builder or maintenance crew can confirm the shutters are closed before racking the breaker in or out.
Deployment context
This accessory mounts to the drawout chassis inside the switchgear enclosure. The shutter position indication gives a visual cue at the chassis face, which is useful during commissioning and routine racking operations — no need to open the door to check shutter state.