What it is and what it does
The 3VM1150-3ED22-0AA0: Breaking capacity is 76 kA at 240 V AC and 53 kA at 415 V AC — figures that cover most industrial service-entrance and feeder applications. The rated insulation voltage is 500 V, and operating voltage tops out at 415 V AC or 250 V DC.
Thermal derating and panel fit
The 50 A rating holds from 40 °C through 50 °C ambient; at 55 °C it derates to 49 A, at 60 °C to 48 A, at 65 °C to 46 A, and at 70 °C to 45 A. If your panel runs hot — say, a crowded enclosure with drives — factor that 45 A ceiling at 70 °C into your load schedule. Physical footprint: 130 mm high, 50.8 mm wide, 70 mm deep. Front protection is IP40 — fine for a clean indoor panel, but not for washdown or outdoor exposure. No trip indicator, no undervoltage release, no ground-fault monitoring, no communication function built in. This is a basic thermal-magnetic MCCB; if you need those features, look at the SENTRON 3VA series.