Thermal derating and what the 50 A means in a warm panel
Above that it drops: 48 A at 55 °C, 47 A at 60 °C, 46 A at 65 °C, and 45 A at 70 °C. If your panel interior runs hot (say, next to a VFD bank or transformer), the continuous load must be trimmed accordingly.
This variant ships with two auxiliary switches and one trip-alarm switch (HQ type) as standard, plus an integrated undervoltage release (UVR). The UVR coil is listed under order code 3VA9608-0BB24 — if you're replacing a unit in a safety circuit that drops the breaker on undervoltage, verify the coil matches your control voltage. The auxiliary contacts give remote status: one for the main contact position, one for the trip-alarm flag. No communication module or ground-fault monitoring is built in; this is a straightforward protective breaker, not a metering device.