The Siemens 3VA1112-6MH36-0CH0 is a current-production IEC frame 160 molded-case circuit breaker (MCCB) with a 70 kA interrupting capacity at 415 V AC — class H breaking capacity, so it handles high prospective fault current without cascading upstream. The TM120M thermal-magnetic trip unit is set for motor starter protection: the thermal element provides overload protection up to 125 A, and the magnetic short-circuit pickup is adjustable from 5 to 15 times In. Note that this variant ships without overload protection (the thermal trip is present but the listing states 'without overload protection' — likely meaning the TM120M is configured as a magnetic-only or short-circuit-protection device; verify the trip curve for your motor full-load amps before committing the BOM line.
Integration Notes
Clamp-type terminals accept copper or aluminum conductors up to the frame's rated cross-section. The undervoltage release (UVR) is wired for 120–127 V AC, 50/60 Hz — if your control voltage differs, the UVR coil must be swapped or bypassed. Two auxiliary switches (HQ) and one trip alarm switch (HQ) are factory-installed; verify the contact configuration (NO/NC) against your PLC input mapping before panel wiring.