The LV848448 is an XF closing voltage release with diagnostics and communication (Control Type: Communicating) for MasterPact MTZ2 and MTZ3 drawout circuit breakers. It operates on a 12 VDC supply, with a threshold tripping voltage of 0.85 to 1.1 Un on closing. Holding power consumption is 4.5 W. Maximum response time is 80 ms on closing MasterPact MTZ2 and 90 ms on closing MasterPact MTZ3.
The 12 VDC supply means this release is designed for low-voltage control circuits common in switchgear panels. The 0.85 to 1.1 Un threshold on closing means the coil will reliably latch the breaker closed as long as the supply stays within that band — important for coordination with battery-backed control power. Holding at 4.5 W is moderate; verify that the control transformer or DC supply has headroom for the inrush during closing.