Its interrupting capacity hits 187 kA at 240 V and 121 kA at 415 V, with a steep drop to 3.7 kA at 690 V — so the voltage class of your feeder determines whether this breaker clears a fault without cascading upstream.
Interrupting capacity and voltage dependency
The interrupting ratings are not flat across voltage: at 240 V it clears 187 kA, at 415 V and 440 V it holds 121 kA, at 500 V it drops to 75.6 kA, and at 690 V it falls to 3.7 kA. For a 400 V distribution panel feeding motor control centers, the 121 kA rating comfortably covers most transformer-fed fault levels up to 2.5 MVA.
Thermal performance and operating range
Maximum power loss is 10 W, manageable in a standard enclosure without forced cooling. The lifecycle status is active, meaning this is a current-production catalog item, not a phase-out code.
The 86 mm depth (3.39 in) is shallow enough for shallow backpan enclosures.
This is an active, current-production Siemens SENTRON MCCB.