SENTRON 3VA1 MCCB for line protection
Thermal derating and breaking capacity by voltage
The 50 A rating holds flat from 40 °C to 50 °C, then derates to 49 A at 55 °C, 48 A at 60 °C, 46 A at 65 °C, and 45 A at 70 °C. Breaking capacity drops with system voltage: 121 kA at 240 V, 75.6 kA at 415 V, 52.5 kA at 440 V, and 11.9 kA at both 500 V and 690 V.
Integration: DIN-rail footprint and included undervoltage release
Dimensions: 130 mm height, 76.2 mm width (3 in), 70 mm depth (2.76 in). The 3-pole body fits a standard 3-module panel space. No separate UVR module to wire; the release is factory-installed and tested.
