The 10 kA SCCR at 440 V AC meets the requirement for most sub-distribution boards fed by a transformer; if your available fault current is higher, you'll need upstream current-limiting fuses or a higher-rated breaker. Temperature derating is baked in: at 35 °C it holds the full 10 A, but at 50 °C you're down to 8.76 A, and at 55 °C it's 8.42 A. The 4-pole design switches the neutral (3P+N), which matters for TN-S or TN-C-S systems where you want the neutral isolated during maintenance.
Deployment context
Mount in any position. Installation depth is 70 mm.