What this MCB carries
The integrated ammeter, voltmeter, wattmeter, reactive-power meter, and frequency meter make this a metering MCB, not just a protective device. It complies with IEC/EN60898-1 and GB/T10963.1, pollution degree 2, overvoltage category III.
Fastens onto standard DIN rail, any mounting position. Front face is IP40; rear side is IP20.
Temperature derating and real-world current
Rated 6 A at 30 °C and at AC. At 40 °C the continuous rating drops to 5.56 A; at 50 °C it's 4.81 A; at 60 °C it's 4.54 A. The 55 °C value (5.07 A) shows a slight non-monotonicity — likely a measurement point — but the trend is clear: above 40 °C derate by roughly 10% per 10 °C rise.
