MCCB for motor protection — 100 A, ETU350M trip unit
The Siemens 3VA2110-5MN32-0DH0 is a SENTRON molded case circuit breaker (MCCB) rated for motor protection duty, carrying a continuous current Iu of 100 A across the 40 °C to 50 °C band before derating begins at 55 °C. Breaking capacity reaches 187 kA at 240 V and 121 kA at 415/440 V, dropping to 75.6 kA at 500 V and 17 kA at 690 V. The 690 V rating of 17 kA is the limiting case — verify SCCR against the available fault current on that voltage class. The UVR drops the breaker on loss of control voltage — standard for safety circuits where a downstream E-stop or undervoltage condition must open the main power path.
The 105 mm width matches the typical 3-pole SENTRON 3VA frame, so a panel laid out for a 3VA1110 or 3VA2010 will accept this unit without re-drilling the mounting holes.