The adjustable thermal-magnetic trip unit covers 300 A to 1 500 A, giving you a wide window to match the motor full-load current and branch-circuit protection requirements without swapping the breaker body. Breaking capacity is the real headline here: 330 kA at 240 V AC, 242 kA at 415 V and 440 V, still 187 kA at 500 V, and drops to 3.7 kA at 690 V. At 690 V the 3.7 kA tells you this breaker is not intended for 690 V motor circuits; it's a 240–500 V machine.
The UVR ensures the breaker drops out if control voltage is lost — standard for safety circuits on motor starters where a loss of control power should kill the motor. The auxiliary switches give remote status indication of the breaker position (open/closed) and the trip alarm signals a fault condition separately. No communication module or phase-failure detection on this variant — it's a straightforward electromechanical MCCB with hardwired aux contacts.