Line protection MCCB — 20 A, 121 kA interrupting capacity
Its TM240 thermal-magnetic release provides fixed overload and short-circuit protection without an auxiliary release or undervoltage release fitted. The interrupting capacity reaches 121 kA at 240 V, 75.6 kA at 415 V, 52.5 kA at 440 V, and 11.9 kA at 690 V — figures that govern its fault-clearing capability at the panel's available fault current. That means a panel running at 55 °C can only load this breaker to 19.2 A continuous; at 65 °C, 18.4 A. Two HP auxiliary switches are built in, but there is no trip indicator, no communication function, no phase failure detection, and no ground fault monitoring — this is a straightforward thermal-magnetic breaker for basic feeder or branch protection in a distribution panel.
The 3VA1120-4EF32-0AB0 measures 76.2 mm wide, 130 mm high, and 70 mm deep.