125 A MCCB with 187 kA SCCR — selectivity headroom for high-fault panels
Its interrupting capacity hits 187 kA at 240 V, 121 kA at 415 V, and 75.6 kA at 440 V — numbers that put this in the high-fault tier for main or feeder protection where available fault current exceeds 100 kA.
Rated continuous current holds at 125 A from 40 °C through 50 °C ambient, then steps down: 120 A at 55 °C, 117.5 A at 60 °C, 115 A at 65 °C, and 112.5 A at 70 °C. If the panel ambient hits 55 °C, plan for 120 A max continuous load — the 125 A label applies only below 50 °C. The breaker measures 130 mm high, 76.2 mm wide, and 70 mm deep, with IP40 protection on the front face.
Auxiliary release and trip options
Two HQ auxiliary switches are integrated for status feedback (open/closed indication). No undervoltage release, no phase-failure detection, and no communication function are fitted; the TM210 overcurrent release handles only thermal-magnetic protection. The trip indicator is absent — visual trip flag is not provided on this variant.