What this MCCB is and what it does
The Siemens SENTRON 3VA1180-3GF46-0AA0 is a 4-pole molded case circuit breaker (MCCB) rated for 80 A continuous, designed for line protection in distribution panels and industrial switchgear. It carries a TM240 thermal-magnetic overcurrent release — the thermal element handles overloads, the magnetic element clears short circuits — and is sized for 4-wire (three-phase-plus-neutral) systems where all four poles need coordinated protection. The interrupting ratings tell you where it can be installed: 75.6 kA at 240 V (typical for North American 240/120 V split-phase or 240 V three-phase), 52.5 kA at 415 V (common 400 V-class European grids), and 32 kA at 440 V. At 500 V and 690 V it still holds 11.9 kA — useful for 690 V industrial networks or motor circuits with high fault current. That spread means one part number covers multiple voltage classes without swapping breakers between panels. Thermal derating is mild: it holds 80 A from 40 °C through 50 °C, drops to 78 A at 55 °C, and still delivers 74 A at 70 °C. In a warm enclosure — say a non-ventilated panel near a furnace line — you lose only 6 A off the nameplate. The 19.2 W maximum power loss at full load helps when calculating enclosure heat rise.
Panel fit and integration
Dimensions are 130 mm high, 101.6 mm wide, 70 mm deep — a compact 4-pole MCCB footprint. The 70 mm depth is the dimension behind the panel face; plan for busbar or cable bend radius behind the mounting plate. Front face carries IP40 protection, so it's fine for general-purpose indoor panels but not washdown zones.