The Siemens SENTRON 3VA1010-2ED42-0AA0 is a 4-pole molded case circuit breaker (MCCB) rated for line protection, carrying a continuous current of 100 A at 40 °C and a maximum interrupting capacity of 52.5 kA at 240 V. The TM210 thermal-magnetic release handles overload and short-circuit protection without undervoltage or shunt trip accessories installed.
Interrupting capacity and selectivity headroom
At 415 V the interrupting rating is 32 kA, dropping to 13.6 kA at 440 V and 7.5 kA at both 500 V and 690 V. These figures define the fault-clearing capability at the breaker terminals — for a 400 V distribution panel fed from a transformer rated above 2 MVA, the 32 kA at 415 V typically provides enough headroom for selective coordination with downstream MCBs, provided the upstream transformer impedance and cable run are accounted for in the coordination study.
Thermal derating and panel integration
The breaker holds 100 A continuously from 40 °C up to 50 °C, then derates to 98 A at 55 °C, 96 A at 60 °C, 94 A at 65 °C, and 91 A at 70 °C. In a 600 mm wide enclosure with four breakers side-by-side, expect the internal ambient to rise 10–15 °C above the room temperature — the 91 A at 70 °C figure is the one to size against for a tightly packed panel. The 70 mm depth (2.76 in) and 101.6 mm width (4 in) fit standard Siemens SENTRON mounting bases; the 130 mm height (5.12 in) leaves clearance for busbar connections above and below.
Compliance and environmental limits
Rated insulation voltage is 800 V. Front protection is IP40 — suitable for enclosed panel mounting where the front face is behind a door. Operating temperature range is -25 °C to 70 °C; storage range is -40 °C to 80 °C. Maximum power loss is 25 W. The breaker carries no ground-fault monitoring, no communication function, and no trip indicator. Standard compliance documentation (RoHS, REACH, UL, IEC) applies per Siemens SENTRON series specifications.