At 1.6 A it's sized for low-current lighting or control transformer protection, not main feeder duty.
Snap-on DIN rail mounting for standard 18 mm per pole enclosures. The 3+N-pole configuration (three protected phases plus switched neutral) is common in three-phase sub-distribution boards for small commercial or industrial loads — lighting contactor panels, small pump controls, or HVAC equipment disconnects where a 1.6 A C-curve protects a specific low-current branch.
