Rated 400 V AC (multi-phase operation up to 440 V), this MCB handles line-to-line and line-to-neutral faults in 230/400 V three-phase systems. The 10 kA SCCR under EN 60898 is the go-to figure for most commercial panel specs; the 20 kA under IEC 60947-2 gives headroom in industrial switchgear where fault current can run higher. The 5 kA rating under UL 1077 and CSA C22.2 No.235 covers North American supplementary protection applications — useful if this part lands in a mixed-standard panel. The installation depth is 70 mm, with an overall depth of 76 mm — enough clearance for standard enclosure depths.
Where it goes and compliance
Suitability for mechanical engineering and industry per the manufacturer's designation — expect this in control panels for conveyors, pumps, machine tools, and HVAC equipment. Overvoltage category III means it can be installed at the distribution board level, not just downstream. Energy limiting class 3 ensures fast arc quenching to minimize let-through energy on a fault.