The LV839302 is a Masterpact MTZ3 50 HF automatic switch disconnector rated 5000 A at 104 °F (40 °C) — that is the continuous current it carries without derating in a typical 40 °C panel environment. The 85 kA Icu at 600 V AC covers the 480/277 V and 600 V class installations common in North American industrial distribution. Drawout mounting means the breaker slides out of its cradle for inspection or replacement without disturbing the bus connections — a standard requirement for switchgear where uptime matters. The 3-pole configuration suits three-phase distribution feeders, not single-phase or DC applications.
The chassis-mounted drawout unit measures 31.07 in wide by 18.8 in high by 16.8 in deep. The 9.06 in (230 mm) connection pitch matches the standard Masterpact MTZ3 cradle footprint — verify the existing switchgear cubicle cutout against these dimensions before specifying. The push-button control type means the breaker ships with the standard mechanical push-to-trip and push-to-close actuators on the front escutcheon.
The 100 kA Icu ratings are certified under UL 489, the standard for molded-case circuit breakers and switch-disconnectors in North America. The device is listed for distribution application on AC networks at 50/60 Hz. For RoHS, REACH, and other compliance documentation, Schneider Electric provides declarations through its product documentation portal — the order code LV839302 returns the full compliance package.