The LV839005 is a Schneider Electric Masterpact MTZ3 60 HA non-automatic switch disconnector rated for 6000 A continuous at 104 °F (40 °C). It carries a 65 kA interrupting capacity at 635 V AC (ANSI C37.50) when used with an external relay, and a short-time withstand of 85 kA for 0.5 s. That 65 kA rating holds at 254 V, 508 V, and 635 V — meaning it clears faults across the common low-voltage distribution levels without derating.
This is a 3-pole fixed-mount switch disconnector built for distribution duty. The 85 kA short-time withstand (0.5 s) tells you the device can ride through a fault long enough for an upstream breaker to clear, which is critical for selective coordination studies.
Physical footprint
Fixed-mount chassis: 30.2 in wide, 13.9 in tall, 11.7 in deep. Connection pitch is 9.06 in. That footprint matches standard ANSI switchboard cubicle layouts — verify the door cutout and bus spacing against your existing gear before ordering.