This Siemens SENTRON 5SU9604-1KK16 is a residual-current-operated circuit breaker (RCBO) combining overcurrent and earth-leakage protection in a single 1-module-wide (18 mm) package. It's rated 16 A with a 300 mA Type AC residual trip, C-curve magnetic release, and a 10 kA breaking capacity per EN 60898 and IEC 60947-2. That 10 kA at 230/240 V AC means it can safely interrupt a fault current up to 10,000 A without upstream cascading — standard for final-circuit protection in commercial and industrial distribution boards.
Panel fit and installation
At 18 mm wide (1 MW), it snaps onto standard DIN rail. Depth is 77 mm, installation depth 70 mm — check gland-plate clearance if the enclosure is shallow. IP20 rating applies once the distribution board is installed and conductors are connected. Supply can enter from top or bottom, and mounting position is unrestricted. Halogen-free and silicon-free construction matters for clean-room or high-reliability environments where outgassing is a concern.