This is not a residential MCB; the D curve and the 20 kA rating place it squarely in industrial and commercial switchgear. The part is rated for single-phase and multi-phase operation at 440 V AC and operates on 50/60 Hz supply. The DC-side rating tops out at 72 V, so if your application is a DC control circuit, verify that voltage fits your rail. The 2-pole design switches both phase conductors; there is no neutral pole switching, which is standard for a two-pole breaker on a single-phase or split-phase line.
The breaker is designed for industrial operation and mounts in any position via the quick-assembly system — standard DIN-rail integration for a 2-module-width unit. The IP20 rating applies only with connected conductors, which is typical for panel-mounted MCBs; the enclosure provides the ingress protection, not the breaker itself.
Environmental and compliance details
The operating temperature range spans -40 °C to 75 °C, with derating for humidity: max 95% RH at 55 °C, tapering to 35% RH at 75 °C. The breaker accepts supplementary devices and has combined terminals top and bottom, simplifying busbar or ring-tongue connections.