The LV839473 is a pre-wired chassis terminal block for Schneider MasterPact MTZ2 and MTZ3 drawout circuit breakers. It's the wiring-side interface that connects the breaker's PTE (power terminal extension) to the panel's control wiring. Because it's a drawout breaker, the terminal block stays fixed in the cradle — the breaker slides in and out without disturbing the wiring. That means a line-down swap of the breaker itself takes minutes, not hours of re-termination.
Active lifecycle — no obsolescence worry
This part carries an active lifecycle status. That means Schneider still manufactures it, supports it with documentation, and has no announced end-of-life. For a sourcing buyer filling a BOM, there's no LTB clock ticking — you can specify it into a new panel build or order spares without worrying about a last-time-buy window.