The C16N3TM080C is a Schneider Electric ComPacT NSX160N 3-pole circuit breaker with a TM-D thermal-magnetic trip unit rated at 80 A at 50 °C. The 'N' breaking capacity code means it interrupts 50 kA at 415 V AC — that's the standard fault level for most industrial distribution panels in 400 V class systems. The TM-D trip gives you fixed thermal overload (L) and magnetic short-circuit (I) protection, no electronic adjustment; it's a straightforward replacement for a panel that already uses this trip family. At 220/240 V the Icu jumps to 90 kA, but the 50 kA at 380/415 V is the number that matters for a standard European or Asian 400 V line. The NSX160N frame (160 A max) gives you headroom if the load ever needs a higher-rated trip unit swapped in later — same physical footprint, same mounting.
IP40 enclosure protection means it's for indoor panel use, not washdown environments.
Pollution degree 3 (IEC 60664-1) covers typical factory-floor environments with conductive dust or humidity. Overvoltage category III suits fixed-installation distribution boards.