The 3VA1120-3EF36-0BA0: The interrupting rating varies with system voltage: 75.6 kA at 240 V, 52.5 kA at 415 V, 32 kA at 440 V, and 11.9 kA at both 500 V and 690 V. The 11.9 kA rating at 690 V still covers most industrial 690 VAC systems.
Thermal-magnetic curve and continuous current
The TM240 release provides a fixed thermal trip for overloads and a magnetic instantaneous trip for short circuits. Continuous current holds at 20 A from 40 °C through 55 °C, then derates to 19 A at 60 °C and 65 °C, and 19 A at 70 °C.
The 76.2 mm width (3 inches) is the standard 3-pole MCCB footprint for this SENTRON frame size — it occupies three 25.4 mm module positions on a DIN rail or panel-mount base.