The LV839270 is a drawout chassis for the Schneider Electric MasterPact MTZ2 air circuit breaker range, rated for 800 to 2000 A at 104 °F (40 °C) in a 3-pole configuration. This is the mechanical frame that the breaker cradle slides into — it provides the mounting, primary disconnects, and arc chamber housing for the MTZ2 interrupting module. The drawout design means the breaker can be racked out for maintenance or replacement without disturbing the line and load connections, which is standard for switchgear where uptime and isolation matter.
The 800-2000 A continuous current rating at 40 °C covers the full MTZ2 frame — the chassis itself does not limit the breaker's rating; it is sized to accept any MTZ2 interrupting module within that range. The 3-pole configuration matches three-phase power distribution in commercial and industrial switchgear. Drawout mounting means the chassis bolts into a fixed switchgear cubicle and includes the racking mechanism, shutters, and primary/stab connections. If your existing installation uses a fixed (non-drawout) MTZ2, this chassis will not interchange without modifying the enclosure.