Its interrupting capacity hits 330 kA at 240 VAC and 242 kA at 415 VAC — figures that place it in the high-fault tier for industrial distribution, not a panelboard general-purpose breaker.
The 100 A frame holds its rating across 40–50 °C without derating; at 70 °C it still carries 90 A. That 690 V rating is what lets it serve European 690 V drive inputs or mining equipment.
Starter protection and release design
This is a starter-protection version, meaning the ETU310M electronic trip unit is tuned for motor-starting inrush — it rides through the 6–8x FLA spike during acceleration without nuisance tripping, then clears a locked-rotor fault fast enough to protect the contactor and cable. That's standard for safety circuits where a motor must not auto-restart after a power dip. Auxiliary contact block carries two auxiliary switches plus a trip alarm and an electrical alarm switch — enough for remote status and fault annunciation back to a PLC or DCS.
Maximum power dissipation is 75 W at full load. In a sealed enclosure that heat needs to be factored into the thermal budget — don't crowd it against other high-dissipation gear without ventilation or derating.