What this 4-pole C16 MCB covers
The Siemens Betagard 5SL7416-7RC is a 4-pole miniature circuit breaker rated 16 A at 30 °C with a C tripping characteristic, designed for industrial branch-circuit protection per EN 60898 and IEC 60947-2. It breaks 15 kA per EN 60898 at 415 V AC, and 20 kA per IEC 60947-2 — enough headroom for most industrial panel fault levels without cascading upstream. The 4-pole (4P) design switches all phases plus the neutral, so it suits three-phase loads where the neutral must be disconnected with the phases. Snaps onto DIN rail, occupies 4 modular width units (18 mm each). Housing is halogen-free and silicon-free.
At 40 °C it derates to 15.2 A, at 50 °C to 14.4 A, and at 60 °C to 13.76 A.
Height 90 mm. The sealable design (tamper-evident seal wire) is standard on Betagard — useful for utility-metering or leased-equipment panels where unauthorized switching must be traceable.