The interrupting rating is 15 kA at 230 VAC and 10 kA at 250 VDC, which covers most branch-circuit fault scenarios in industrial and commercial installations.
Trip Curve D — what it means for the load
Trip Curve D provides a magnetic trip threshold of 10 to 20 times the rated current (160 to 320 A instantaneous). The thermal element handles the 16 A continuous rating; the magnetic element clears short-circuit faults above the threshold within the 15 kA interrupting capacity.
Interrupting rating and DC capability
The 10 kA DC interrupting rating at 250 VDC makes it suitable for DC distribution in telecom, UPS, or solar combiner panels — provided the DC voltage stays within the 250 VDC limit. Two poles in series on a DC circuit doubles the arc-gap, improving DC interruption reliability.