Breaking capacity across voltages
At 415 V and 440 V the breaker holds 121 kA, dropping to 79 kA at 500 V, and 3.4 kA at 690 V.
Thermal derating and ambient tolerance
Rated full 63 A from 40 °C through 50 °C, then derates linearly: 60.6 A at 55 °C, 58.3 A at 60 °C, 55.9 A at 65 °C, and 53.6 A at 70 °C. That 70 °C ceiling means it takes the radiant heat near a furnace or drive cabinet without forced cooling — a real advantage on a hot-strip mill floor where ambient near the rolls melts ordinary gear.
Trip unit and auxiliary configuration
The integrated auxiliary trip is order code 3VA9688-0BL30. No undervoltage release or voltage trigger is present; the voltage trigger option is listed as yes, meaning it can accept a shunt trip coil for remote tripping.
Mounts on DIN rail or direct panel mount. Latching endurance is rated at 20,000 operations. Max power loss is 5.4 W.
Current production — no obsolescence notice. For volume or BOM-freeze inquiries, submit an RFQ.