Breaking capacity is 10 kA Icn at 380–415 V AC 50/60 Hz per IS/IEC 60947-2, and 15 kA Icu at 100–125 V DC per the same standard — enough for most commercial and light industrial distribution boards.
Rated current 63 A at the thermal-magnetic trip unit's continuous rating. The C-curve's magnetic threshold at 8 x In ±20 % means the breaker holds through motor start currents up to roughly 500 A for a few cycles, then trips instantaneously above that band. Overvoltage category IV means it can be installed at the service entrance or main distribution board, not just downstream sub-panels. Electrical endurance is rated at 10,000 cycles, mechanical at 20,000 cycles — figures that reflect the contact wear under load and the mechanism life for routine switching.
Clip-on mounting on 35 mm DIN rail. The 54 mm width (6 x 9 mm pitches) and 77.5 mm depth fit standard distribution board spacing. Tightening torque specified at 3.5 N.m. The biconnect terminal design on the bottom allows looping outgoing conductors without additional connectors. IP20 finger protection on the front face. The white housing carries ON/OFF toggle indication and a separate earth-leakage block can be added alongside.