{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SM1342-6KK03","brand":"Siemens","brandSlug":"siemens","productSlug":"5SM1342-6KK03","canonicalUrl":"https://aoctrl.com/siemens/5SM1342-6KK03","factsUrl":"https://aoctrl.com/api/mcp/products/5SM1342-6KK03","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SM1342-6KK03, 4-pole RCCB, type A, rated current 25 A, rated residual current 30 mA, rated voltage 400 V AC, DIN rail mount.","salesMarkdown":"The Siemens 5SM1342-6KK03 is a 4-pole residual current circuit breaker (RCCB) from the SENTRON 5SM1 series, type A, rated at 25 A and 30 mA residual tripping current on a 400 V AC supply. Rated short-circuit capacity is 10 kA. Occupies 4 width units (72 mm at 18 mm per unit). Installation depth is 55 mm — fits shallow enclosures where a deeper device would hit the gland plate. Mounts in any orientation. Supply can land on top or bottom terminals — no polarity constraint on the line/load side for this RCCB. Finger and back-of-hand safe terminals (IP20 with conductors connected) meet the basic shock-protection requirement for distribution boards. Silicon-free construction matters if this panel shares air with potting, coating, or conformal-coating processes — no silicone outgassing to contaminate bond pads or optical surfaces. Rated 25 A at both 40 °C and 45 °C ambient. Above that, derate linearly: 24 A at 50 °C, 23 A at 55 °C, 22 A at 60 °C, 21 A at 65 °C, 20 A at 70 °C. If the enclosure runs hot — say 55 °C inside a sealed cabinet — plan for 23 A continuous, not the nameplate 25. Storage range extends to -40 °C to 60 °C — the wider storage limit covers shipping and warehouse, not running conditions.","metaTitle":"Siemens 5SM1342-6KK03 SENTRON RCCB, 4-pole, 25 A, 30 mA, 400","metaDescription":"Siemens 5SM1342-6KK03 SENTRON 4-pole RCCB, type A, 25 A, 30 mA, 400 V AC. Current lifecycle stage. Rated short-circuit capacity 10 kA. DIN rail mount. Sourced to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Residual Current Breakers (RCCB/RCBO)"],"specifications":{"Maximum":"45 °C","Minimum":"-25 °C","at 40 Cel":"25 A","at 45 Cel":"25 A","at 50 Cel":"24 A","at 55 Cel":"23 A","at 60 Cel":"22 A","at 65 Cel":"21 A","at 70 Cel":"20 A","Mounting type":"DIN rail (REG)","Number of poles":"4","lifecycle_stage":"current","Mounting position":"any","Installation depth":"55 mm","Product brand name":"SENTRON","Maximum Permissible":"60 °C","Minimum Permissible":"-40 °C","Product designation":"RCCB","Protection class IP":"IP20, if the distribution board is installed, with connected conductors","at AC / rated value":"400 V","Overvoltage category":"III","Design of the product":"Instantaneous","Number of width units":"4","Type of fault current":"A","I2t-value / permissible":"70 000 A²·s","circuit-breaker / Design":"5SM1","Short-circuit current rating":"10 kA","Current / at AC / rated value":"25 A","Product feature / silicon-free":"Yes","For Testing Equipment / Minimum":"100 V","Position / of power supply cord":"top or bottom","Protection against electrical shock":"Finger and back-of-hand safe","Surge current resistance / rated value":"1 kA","Switching function / short-term delayed":"No","Tripping residual current / rated value":"30 mA","Size of installation devices / acc. to DIN 43880":"1","Mechanical service life (switching cycles) / typical":"10 000"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=24199&mlfb=5SM1342-6KK03","alternativesUrl":"https://aoctrl.com/api/mcp/products/5SM1342-6KK03/alternatives.json"},"ai":{"faq":[],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SM1342-6KK03","citationPolicyUrl":"https://aoctrl.com/llms.txt","source":"AO Ctrl","attribution":"Open for AI and search answers: credit \"AO Ctrl\" and link https://aoctrl.com/siemens/5SM1342-6KK03 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-09-02T08:15:54.622Z","lastPublished":"2026-09-02T08:15:54.622Z","indexable":true}}