Miniature circuit breaker 3-pole 15kA D-characteristic 125A 4.5 modules. Miniature circuit breaker in accordance with IEC 60898-1, DIN EN 60898-1 (VDE 0641-11), IEC 60947-2, DIN EN 60947-2 (VDE 0660-101), with time-delayed thermal release for overload protection and electromagnetic release for short-circuit protection. Connection terminal with clamping force compensation, clamping force reinforcement and clamping jaws. Output-side auxiliary connection for flat plugs. Locking and sealing options directly on the toggle. Suitable for subsequent installation of additional equipment. Labeling option directly on the device and individual removal from the phase rail assembly by unlocking the quick-release top hat rail fastening.