The adjustable thermal-magnetic trip covers 300 A minimum to 1 500 A maximum, giving you a wide coordination window for different motor full-load currents. Breaking capacity is the headline: 330 kA at 240 V AC, 242 kA at 415 V and 440 V, 187 kA at 500 V, and 3.7 kA at 690 V.
The basic switch designation is 3VA21107MS320AA0.
Power loss is rated at 10 W maximum, which is modest for a 100 A MCCB; ventilation around the breaker is still advisable in a sealed cabinet. The voltage trigger is present, which means the shunt trip can be wired to a remote emergency-stop or undervoltage coil circuit.
The adjustable trip band from 300 A to 1 500 A covers motor FLA from roughly 75 A to 400 A depending on the starter size and coordination rules. The 330 kA SCCR at 240 V is the figure that governs whether this breaker can be placed on a transformer secondary without cascading upstream; at 690 V the 3.7 kA rating is low enough that you'd need a current-limiting upstream device for high-fault 690 V systems.
