What this MCCB carries and where it fits
The Siemens SENTRON 3VA1010-3ED42-0HH0 is a 4-pole molded case circuit breaker rated for a continuous current Iu of 100 A, configured for line protection with a TM210 thermal-magnetic overcurrent release. The interrupting ratings are specified per the evidence: 75.6 kA at 240 V, 52.5 kA at 415 V, 32 kA at 440 V, and 7.5 kA at 690 V — these are the values the breaker must clear without damage, and they govern the available fault current the installation can tolerate upstream. The 100 A rating holds flat from 40 °C through 50 °C, then derates to 96 A at 55 °C, 94 A at 60 °C, 92 A at 65 °C, and 90 A at 70 °C; that derating curve matters when the breaker lives inside a warm enclosure with other heat sources. The auxiliary contact configuration is 2 auxiliary switches plus 1 trip alarm switch (HQ designation), and a shunt trip release (STL) is integrated as the auxiliary release design. The integrated auxiliary trip is order code 3VA9688-0BL30. There is no undervoltage release, no communication function, no phase failure detection, and no ground fault monitoring — this is a straightforward line-protection MCCB without add-on electronics. The front face carries IP40 protection, suitable for enclosed panel mounting where the breaker is not exposed to washdown or dust ingress.
Mounting dimensions and panel fit
The physical envelope is 130 mm height, 101.6 mm width, and 70 mm depth. These dimensions determine the DIN-rail or mounting-plate footprint inside the enclosure. The 70 mm depth means the breaker projects that far from the mounting surface — verify clearance to the gland plate or door when the panel is densely packed. The 101.6 mm width (approximately 4 inches) is the space the 4-pole unit occupies on the rail; a 3-pole sibling would be narrower, but this unit's width is fixed by the four poles.