What the ratings mean for fit
The Siemens 3VA1080-2ED36-0KH0 is a SENTRON molded case circuit breaker (MCCB) with a TM210 thermal-magnetic overcurrent release, rated 80 A continuous at 40 °C. That 80 A holds flat through 50 °C — no derating needed in a typical 40 °C panel — then steps down to 76.8 A at 55 °C and 72 A at 70 °C, per the datasheet. For a line protection role on a 3-pole circuit, the interrupting capacity is 52.5 kA at 240 V, 32 kA at 415 V, 13.6 kA at 440 V, and 7.5 kA at 690 V. The 52.5 kA at 240 V covers high-fault commercial services; the 32 kA at 415 V handles most industrial distribution. The 690 V rating (7.5 kA) is lower but still adequate for many 690 V motor circuits. The TM210 release is a fixed thermal-magnetic design — no interchangeable rating plugs, no electronic adjustment. That simplifies ordering but locks the breaker to its 80 A frame. The auxiliary contact configuration is 2 auxiliary switches plus 1 trip alarm switch (HQ type), which gives separate signaling for breaker position and fault condition. A shunt trip (STL) is integrated; no undervoltage release is fitted. No communication function, no phase failure detection, no ground fault monitoring — this is a basic, reliable line-protection MCCB for standard distribution panels.
Panel integration and environment
The 3VA1080-2ED36-0KH0 measures 130 mm high, 76.2 mm wide, and 70 mm deep. The 76.2 mm width (roughly 3 inches) is standard for a 3-pole MCCB in this frame size — fits common panel cutouts and busbar spacing. The front face carries an IP40 protection rating, meaning it's protected against tools and wires >1 mm but not against water ingress; mount it inside a panel, not in a washdown zone. Operating temperature range is -25 °C to 70 °C; storage range is -40 °C to 80 °C. The latching endurance is rated at 15,000 operations — a solid mechanical life for a distribution breaker not cycled daily.