Siemens 5SL7116-8RC Miniature Circuit Breaker — 1-Pole, 15 kA, D Curve, 16 A
The Siemens 5SL7116-8RC is a 1-pole miniature circuit breaker (MCB) rated for 240/415 V with a 15 kA breaking capacity and a D tripping characteristic at 16 A. The D characteristic means the magnetic trip operates at 10 to 20 times the rated current (160–320 A), making it suited for loads with high inrush, such as motor starters, transformers, or discharge lighting — where a B or C curve would nuisance-trip on start-up. The 15 kA breaking capacity at 240/415 V tells you this MCB can safely interrupt a fault current of up to 15 kA without welding its contacts or cascading the fault upstream — a critical spec for panel coordination studies and SCCR compliance.