The breaker carries an 800 V rated insulation voltage and operates from -25 °C to 70 °C ambient, with storage from -40 °C to 80 °C. The IP40 front protection keeps the face sealed against small solid objects in a panel environment.
Interrupting ratings and selectivity
The interrupting capacity is the key figure for a sourcing decision: at 240 V the breaker clears 242 kA, at 415 V and 440 V it holds at 187 kA, at 500 V it drops to 121 kA, and at 690 V it is rated 3.7 kA. The ETU350 trip unit supports selective coordination with downstream breakers, which matters when you are trying to isolate a faulted branch without dropping the main bus.
Physical integration
At 25.5 W maximum power loss, the heat load is moderate for a 160 A frame — panel ventilation planning should account for it when densely populated. The IP40 front protection is standard for switchboard mounting; no washdown rating, so this belongs in a dry indoor enclosure.