80 A SENTRON MCCB with TM240 release — current-production line protection
It is designed for line protection — the primary role is feeding downstream distribution or load groups where selectivity and fault isolation matter. Breaking capacity is 220 kA at 240 V, 154 kA at 415 V, 121 kA at 440 V, and 17 kA at both 500 V and 690 V. Thermal derating is minimal up to 50 °C (full 80 A), then drops to 78 A at 55 °C, 77 A at 60 °C, 75 A at 65 °C, and 74 A at 70 °C. If the panel ambient runs above 50 °C, the continuous load must be adjusted accordingly — the 74 A floor at 70 °C still leaves headroom for most 60–70 A feeder circuits.
Panel integration and physical fit
Dimensions are 101.6 mm wide, 130 mm high, 70 mm deep — a standard 4-pole MCCB footprint that fits Siemens SENTRON mounting bases and busbar systems.
Operating environment and storage
The storage limits exceed the operating range — that governs handling and warehousing, not running conditions.