Breaking capacity is the headline number for this class: 187 kA at 240 V AC, 121 kA at 415/440 V, 75.6 kA at 500 V, and 52.5 kA at 690 V. That 187 kA at 240 V is well above typical utility fault levels in North American 240/120 V split-phase panels; the 121 kA at 415 V covers most European and Asian industrial distribution. That keeps the part simple and reliable for standard feeder or main-switch duty where you don't need selective coordination curves or remote trip signalling. The auxiliary switch configuration is one auxiliary contact plus one trip-alarm switch (HP type), enough for a remote open/closed status and a separate fault indication.
The breaker measures 320 mm high × 210 mm wide × 120 mm deep (12.6 × 8.27 × 4.72 in).
Thermal Performance and Power Loss
Maximum power loss is 330 W at rated current. That's the heat that must be dissipated inside the enclosure — factor it into the panel's thermal budget, especially if the MCCB shares a compartment with other high-current devices.