The overcurrent release is a TM120M thermal-magnetic unit, so the thermal element handles overloads and the magnetic element clears short-circuits — no electronic adjustment, but inherently reliable for fixed-threshold motor protection. An integrated shunt trip (STL) release (order code 3VA9688-0BL32) allows remote tripping via a control signal, which is standard for emergency-stop circuits or supervisory shutdown in automated lines.
This MCCB delivers 187 kA at 240 V, 121 kA at 415 V, 30 kA at 440 V, and 17 kA at 690 V — those are the interrupting ratings at each voltage level, so a site electrical engineer can coordinate selectivity with upstream breakers and confirm the SCCR meets the available fault current at the panel.
The breaker holds 160 A up to 50 °C ambient; at 55 °C it derates to 153.6 A, at 60 °C to 150.4 A, at 65 °C to 147.2 A, and at 70 °C to 144 A — so if the enclosure runs hot, the continuous current must be reduced accordingly. Front protection is IP40, so it is splash-proof from the front but not sealed against dust ingress — fine for a clean panel environment, not for washdown zones.