It's designed for railway applications and mechanical engineering/industry panels — the -40 to 75 °C range and pollution degree 3 rating tell you it lives in a cabinet, not a climate-controlled server room.
That dual rating matters: EN 60898 is the residential/commercial standard; IEC 60947-2 is the industrial standard. The 20 kA figure gives you headroom for high-fault industrial feeds — a panel fed from a 630 kVA transformer can push 18 kA prospective, and this breaker handles it without cascading upstream.
Lifecycle stage is current.
Integration and mounting details
Snap-on DIN rail mount, 18 mm wide (1 MW). Combined terminal top and bottom — wire from either direction. Touch protection is built in.
Temperature derating you need to know
The 25 A rating holds at 35 °C. At 40 °C it's 23.8 A; at 50 °C it's 22.55 A; at 60 °C it's 21.2 A. If your panel ambient runs 50 °C, size the load at 22.5 A, not 25. The maximum ambient is 75 °C, but at that point the breaker is derated to about 35% of nominal — that's a survival limit, not an operating point.