Siemens 5SY4213-6KK11 — SENTRON 2P B-Curve MCB, 13 A
The Siemens 5SY4213-6KK11 is a 2-pole miniature circuit breaker from the SENTRON series, designed for 400 V AC systems with a B tripping characteristic and a 13 A rated current. Its 10 kA breaking capacity per EN 60898 covers standard residential and commercial branch circuits; the 20 kA rating per IEC 60947-2 gives headroom for industrial panel coordination where higher fault currents are expected. Rated for 50/60 Hz, this MCB accepts solid or stranded conductors from 0.75 to 35 mm² at both top and combined terminals. Designed for railway applications and mechanical engineering/industry environments, it carries IP20 protection with connected conductors and an ambient temperature range of -40 to +70 °C.
The dual breaking capacity rating is the key differentiator here. At 10 kA per EN 60898 it meets the standard for most final sub-circuits. The DC rating of 15 kA per IEC 60947-2 at 72 V DC maximum covers auxiliary DC control circuits common in rail and process plants. Energy limiting class 3 means this breaker limits let-through energy effectively, reducing stress on downstream wiring and equipment during a fault.
Panel integration
The combined terminal design accepts conductors from both top and bottom, simplifying daisy-chaining in a distribution board.