The interrupting ratings hit 121 kA at 240 V AC and 75.6 kA at 415 V AC, giving real headroom for high-fault installations like industrial mains or transformer feeders.
SCCR and selectivity
With 121 kA at 240 V and 75.6 kA at 415 V, this MCCB handles high available fault current without upstream fusing. The 4-pole construction suits three-phase plus neutral or switched-neutral applications. The TM240 release provides thermal-magnetic overload and short-circuit protection, adjustable via the rating plug. The 57 W maximum power loss is manageable for enclosed panel layouts but should be considered in sealed, high-density cabinets.
The breaker measures 70 mm deep, 140 mm wide, and 158 mm high. The 4-pole width of 140 mm is standard for this frame size, so it fits existing SENTRON panel cutouts and busbar systems.
Auxiliary and alarm contacts
The auxiliary contacts signal the breaker's open/closed position; the trip alarm switch indicates a fault trip. No undervoltage release or ground-fault module is included — those are add-on accessories if needed.