The Siemens 3VA1110-6MH32-0DC0 is a 3-pole IEC frame 160 circuit breaker with a 70 kA interrupting capacity at 415 V — class H breaking capacity, meaning it clears high-fault currents on industrial distribution without upstream coordination headaches. It's rated 100 A continuous and carries a TM120M thermal-magnetic trip unit configured for starter protection (short-circuit pickup adjustable 5 to 15 x In). No overload relay is integrated; this breaker handles the short-circuit side only, so pair it with a separate overload block for motor branch circuits.
What the extras mean on the line
That's standard for safety circuits where a loss of control power should kill the load. The nut keeper kit keeps the busbar connections tight under vibration. Two HQ auxiliary switches give you status feedback (open/closed) for the PLC or a panel light. All of it ships as a single order code, so you're not sourcing add-on kits separately.