The LV848823 is a 600 A sensor plug for MasterPact MTZ1 and MTZ2 air circuit breakers equipped with a MicroLogic X control unit. This is the current-sensing interface between the breaker poles and the electronic trip unit — the part that measures line current and feeds it to the MicroLogic X for protection, metering, and communication. It's specific to the 600 A frame rating; a different plug is needed for other ampacities.
What the 600 A rating means for fit
The 600 A rating on the sensor plug must match the breaker frame and the MicroLogic X trip unit programming. If the breaker is applied at a lower ampacity (say 400 A), the same plug works; the trip unit settings scale the protection down. If the breaker is applied above 600 A, a different sensor plug is required.
Integration note
The sensor plug mounts inside the MasterPact MTZ1 or MTZ2 breaker cradle, connecting the main pole conductors to the MicroLogic X control unit. It's a factory-fit accessory — not field-wired. When ordering a replacement or spare, verify the breaker frame (MTZ1 vs MTZ2) and the MicroLogic X firmware version; the plug is mechanically keyed to the frame size.