Rating Reality — Temperature Derating and Breaking Capacity
The 50 A rating holds at 35 °C ambient. At 40 °C it derates to 48 A, at 50 °C to 45.95 A, and at 60 °C to 43.8 A. If your panel runs hot — say, a sealed enclosure near a furnace line — size your load to the derated current, not the nameplate. The C-curve's magnetic trip threshold (5–10× In) means a 50 A unit trips instantaneously between 250 A and 500 A, which coordinates well with downstream branch protection for motor starters or VFD input feeds. The 15 kA rating per IEC 60947-2 is the one that matters for industrial panels where the prospective fault current exceeds 10 kA. If your facility's transformer is close to the panel and the SCCR study shows 12 kA at the distribution board, this breaker covers it. The 10 kA EN 60898 rating is the domestic/commercial standard — useful for coordination studies but not the binding figure in an industrial BOM.
Panel Integration and Compliance Notes
Combined terminal top and bottom — wire entry from either direction, no need to flip the breaker for top-feed vs bottom-feed panels. Sealable (padlockable) for lockout/tagout compliance. Halogen-free and silicon-free construction matters if this lives in a clean room or a zone with silicone-sensitive contacts (e.g., relay or PLC environments). Touch protection is built in (IPXXB finger-safe). Overvoltage category III and pollution degree 3 mean it's rated for fixed installations in industrial environments where transients are common and conductive dust may be present. The 70 mm installation depth leaves room behind the breaker for wiring — no need to jam conductors into a tight rear channel.