What the interrupting ratings mean for your panel
The Siemens 3VM1180-3GD42-0AA0 is a SENTRON molded case circuit breaker (MCCB) with a TM210 thermal-magnetic release, rated 80 A continuous current at 40 °C through 50 °C. It carries 76 kA interrupting capacity at 240 V AC, 53 kA at 415 V, 32 kA at 440 V, and 12 kA at 500 V — the voltage-dependent curve that tells you exactly where this breaker can safely clear a fault without upstream coordination failure. The 4-pole design (3 phases + neutral) and 690 V AC rated operational voltage cover most industrial low-voltage distribution panels. IP40 on the front means it's protected against solid objects over 1 mm but not sealed against moisture; mount it in a dry indoor enclosure.
Thermal derating and continuous current
The 3VM1180-3GD42-0AA0 holds 80 A from 40 °C to 50 °C ambient, then derates to 78 A at 55 °C, 77 A at 60 °C, 75 A at 65 °C, and 74 A at 70 °C. If your panel runs hot — say a packed enclosure near a drive cabinet — that 6 A drop between 50 °C and 70 °C matters for sizing the downstream load. The TM210 release is thermal-magnetic, so no electronic adjustment; trip curve is fixed. Power loss at full load is 19 W maximum, which adds to the enclosure heat budget.
Physical fit and panel integration
Dimensions: 70 mm depth, 101.6 mm width, 130 mm height. The 101.6 mm width (4 inches) is standard for a 4-pole MCCB on a DIN rail or panel-mount footprint. Verify the mounting depth — 70 mm is shallow enough for most 200 mm deep enclosures, but check clearance for the rear arc chamber and terminal access. Storage temperature range -40 °C to 80 °C; operating range -25 °C to 70 °C.