Siemens 3VA1050-3ED36-0CA0 — 50 A MCCB with TM210 Release and Undervoltage Release
Breaking capacity follows the voltage: 75.6 kA at 240 V AC, 52.5 kA at 415 V, 32 kA at 440 V, and 7.5 kA at both 500 V and 690 V. At 415 V, the 52.5 kA rating still covers most industrial transformer-fed busways. Note the thermal derating: the breaker holds a full 50 A up to 50 °C, then drops to 49 A at 55 °C, 48 A at 60 °C, 46 A at 65 °C, and 45 A at 70 °C.
The undervoltage release is the only auxiliary release fitted. If remote signaling or GFCI is needed, this is not the variant — look to the 3VA1 series with electronic releases or communication modules.