The C-curve means magnetic trip occurs at 5–10× rated current, so a 20 A breaker holds through a 100–200 A momentary surge — right for compressor or pump starts that draw 6–8× FLA for a few cycles. Multi-phase operation is rated to 440 V AC maximum, so it works in split-phase or line-to-line configurations within that ceiling. Terminals accept solid or stranded conductors from 0.75 mm² up to 25 mm², which covers most branch-circuit wire sizes from 1.5 mm² lighting circuits up to 4 mm² or 6 mm² feeder tails. The sealable feature (Yes) means the breaker accepts a lead seal through the housing to lock the handle position — useful for rental meters or restricted-access panels where tamper evidence is required.
Ambient temperature range is -20 to +45 °C, with periodic tolerance to +55 °C and 95% humidity — adequate for indoor panel environments but not for direct outdoor exposure. Vibration resistance tested to 50 m/s² at 25–150 Hz and 60 m/s² at 10–150 Hz per IEC 60068-2-6, so it holds up on machinery panels or near conveyor drives.