Siemens SENTRON 3VA1140-5EF36-0CC0 — 40 A MCCB for Line Protection
Breaking Capacity & Thermal Performance
Breaking capacity drops with system voltage: 187 kA at 240 V, 121 kA at 415 V, 75.6 kA at 440 V, and 17 kA at 500 V and 690 V. Thermal derating is minimal up to 50 °C (flat 40 A), then drops to 39 A at 55 °C and 37 A at 70 °C.
Built-In Auxiliaries & Release
No communication function onboard — this is a plain breaker, not a smart metering unit. The UVR is factory-fitted; verify coil voltage rating against your control supply before panel wiring. Power loss is 13.3 W maximum at rated load, which matters for enclosure thermal calculations in sealed cabinets.