Siemens 5SY7213-6 SENTRON MCB — 2-pole B-curve for industrial panel protection
The Siemens 5SY7213-6 is a 2-pole miniature circuit breaker from the SENTRON series, designed for mechanical engineering and industrial applications. It carries a B tripping characteristic, meaning it trips at 3–5× rated current — the standard choice for resistive and general-purpose loads where inrush is modest. Breaking capacity is 15 kA per EN 60898-1 and 25 kA per IEC 60947-2, with a 5 kA rating under UL 1077 / CSA C22.2 No. 235 for North American panels. The 2-module-width (36 mm) body snaps onto a DIN rail and mounts in any position, which keeps panel layout flexible.
Breaking capacity and standard compliance
This breaker is certified to both IEC/EN 60898-1 and IEC/EN 60947-2, plus UL 1077. The 15 kA rating under 60898-1 covers the residential and light commercial duty cycle; the 25 kA rating under 60947-2 is the figure that matters for industrial coordination studies where higher fault current is expected. At DC (60–72 V) it interrupts 15 kA per IEC 60947-2. The 5 kA UL 1077 rating means it qualifies as a supplementary protector in North American control panels — not a branch-circuit rated device under UL 489, so verify your local code before specifying it as the sole overcurrent device on a feeder.
Environmental and installation notes
Rated for ambient temperatures from -40 °C to 75 °C, with humidity derating above 55 °C (max 95% RH at 55 °C, tapering to 35% at 75 °C). The housing is halogen-free and silicon-free, which matters for clean-room or sensitive electronics environments. IP20 with connected conductors — standard for enclosed panel mounting. The combined top and bottom terminals accept a quick-assembly system, and the breaker is sealable for tamper-proofing in metered or safety-critical circuits.