Its breaking capacity reaches 121 kA at 240 VAC, 75.6 kA at 415 VAC, and 52.5 kA at 440 VAC — figures that give you headroom for high-fault installations without cascading upstream.
Current rating across the thermal band
That means in a warm cabinet — say 50 °C internal ambient — you still get the full 32 A without a sizing penalty. The thermal curve is predictable, so panel builders can plan fill factor without oversizing the frame.
Breaking capacity by voltage level
At 240 VAC the breaker interrupts 121 kA symmetrical; at 415 VAC it handles 75.6 kA, and at 440 VAC it manages 52.5 kA. For 500 V and 690 V systems the rating drops to 11.9 kA. These are the values you need for selective coordination studies — the 121 kA figure at 240 V covers most North American secondary-side faults, while the 75.6 kA at 415 V suits European distribution boards.
Built-in auxiliary devices
The 76.2 mm width (3 inches) matches the standard SENTRON 3VA frame footprint — if you are swapping a 3VA1110 or 3VA2116, the mounting hole pattern and bus-bar spacing are identical. No rewiring of the bus bars is needed for a like-for-like frame swap.