It carries a 10 kA Icu breaking capacity at 1000 V DC with four poles in series, per IEC 60947-2. This is a fixed-mount breaker, backplate-mounted, with front connections top and bottom. The 185 mm width and 110 mm depth fit a standard PV combiner or inverter enclosure footprint.
The headline 10 kA Icu at 1000 V DC with four poles in series is the figure that governs fault-handling in a PV string combiner. Because DC arcs do not self-extinguish at current zero, the breaker must clear the fault within its rated interrupting capacity — undersizing here risks arc flash or equipment damage. The TM-DC trip curve is tuned for DC applications where the thermal element follows I²t heating and the magnetic pickup handles the high inrush of capacitor-charging or inverter pre-charge events. Mechanical durability of 5000 cycles and electrical durability of 1000 cycles at rated voltage cover the expected switching life in a PV system where the breaker operates infrequently — typically for isolation during maintenance or fault clearing. The suitability-for-isolation marking per IEC 60947-2 confirms it can be used as a visible-break disconnect in the DC circuit.
Installation notes
Front terminals accept cable or busbar connections; the 45 mm pole pitch aligns with standard busbar systems. The toggle control provides manual on/off and trip indication.