The LV839065 is a Masterpact MTZ3 60 HF switch disconnector rated 6000 A at 40 °C — that is the continuous current it carries without derating in a typical 40 °C ambient. At 508 V AC the same rating holds at 100 kA Icu; at 635 V AC it drops to 85 kA Icu. For a distribution main or large feeder, that breaking capacity covers most utility-side fault scenarios in an ANSI-rated installation. The drawout mounting and chassis support mean this breaker slides into a fixed cradle — no need to disconnect power cables for removal. The 3-pole AC network design is standard for three-phase distribution. Push-button control on the front gives local open/close without auxiliary power.
Deployment context
This is a large-frame drawout breaker for switchboard or motor control center mounting — not a DIN-rail device. The 31.07 in width and 18.8 in height define the panel cutout and clearance. The 16.8 in depth plus the drawout travel needs to be accounted for in enclosure depth. Connection pitch of 9.06 in sets the bus-bar or cable lug spacing.