What this breaker is and what the ratings mean
The Siemens 3VA1110-6MH36-0AH0 is a 3-pole IEC molded-case circuit breaker on the 3VA1 platform, frame size 160, with a 100 A thermal-magnetic release (TM120M) configured for starter protection — meaning it provides short-circuit protection only, with no built-in overload function (that is handled by a separate motor starter or overload relay upstream). Breaking capacity class H delivers Icu = 70 kA at 415 V AC, which is the maximum short-circuit current the breaker can safely interrupt without damage. That rating places it in the high-capacity tier for this frame size — suitable for installations with high available fault current, such as large motor control centers or main distribution panels. The adjustable short-circuit release (Ii) spans 5 to 15 times In (500 A to 1500 A), letting you tune the magnetic trip threshold to the inrush characteristics of the connected load — typically a motor starter combination.
Lifecycle and sourcing reality
For a BOM-critical spare or a new panel build, the 3VA1110-6MH36-0AH0 can be sourced to order against an RFQ; availability and current pricing are confirmed at quote time.
Integration notes
Clamp-type terminals accept copper or aluminum conductors without lugs — a time-saver in panel wiring. The breaker ships with two auxiliary switches (HQ) and one trip alarm switch (HQ) pre-installed, covering status feedback and remote fault indication without additional accessories. Mounts on a standard DIN rail or directly to a backplate via the frame's integral fixing points. The 3VA1 platform shares accessory footprints with the broader Siemens 3VA family, so shunt trips, undervoltage releases, and motor operators are interchangeable.