What this MCCB is and where it fits
The Siemens SENTRON 3VA1010-2ED36-0CH0 is a 3-pole molded case circuit breaker (MCCB) rated for 100 A continuous current at 40 °C, with a TM210 thermal-magnetic trip unit. It's a line-protection device — meaning it sits between the transformer or bus and the downstream distribution, not on a motor branch. The 70 mm depth and 76.2 mm width drop into standard panel layouts; the IP40 front protection keeps dust out of the enclosure face.
Breaking capacity — what the numbers mean for your fault level
This MCCB delivers 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 figure at 240 V is the headline — it clears a 52.5 kA prospective fault without self-destructing. At 415 V (common in European industrial panels) the 32 kA rating still covers most transformer-fed busways. The drop at 690 V to 7.5 kA means you need to check coordination if the available fault current exceeds that at the higher voltage.
Thermal derating and auxiliary contacts
The 100 A rating holds steady up to 50 °C ambient, then derates to 96 A at 55 °C and 90 A at 70 °C. If the panel runs hot — say, near a drive cabinet — the 70 °C figure (90 A) is the one to design to, not the 100 A nameplate. The auxiliary contact block ships as 2 auxiliary switches plus 1 trip alarm switch (HQ configuration), which gives you both a status mirror and a separate fault-indication path for the PLC or annunciator. The undervoltage release (UVR) is built in, so the breaker drops on loss of control voltage — useful for E-stop chains or undervoltage protection schemes.