Breaking capacity is voltage-dependent: 220 kA at 240 V AC, 154 kA at 415 V, 121 kA at 440 V, and 17 kA at both 500 V and 690 V. The 4-pole design with 100% N-conductor protection means the neutral pole is fully rated and trips with the phase poles — no derating needed for unbalanced loads or harmonic-rich circuits. This matters for panels feeding non-linear loads like VFD banks or UPS inputs where neutral current can approach phase current.
Thermal derating and temperature range
At 60 °C it derates to 31 A, and at 65 °C and 70 °C it settles at 30 A.
Physical integration and panel fit
Height is 130 mm; width is 4 inches (101.6 mm). The 4-inch width is a standard US panel cutout dimension — this breaker fits existing 4-inch-spaced busbar or lug layouts without adapter plates. That DC rating opens up battery-bank or DC-bus applications in the 600 V class, though the DC breaking capacity should be verified against the device manual per the manufacturer's note.