{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SU1356-6KK20","brand":"Siemens","brandSlug":"siemens","productSlug":"5SU1356-6KK20","canonicalUrl":"https://aoctrl.com/siemens/5SU1356-6KK20","factsUrl":"https://aoctrl.com/api/mcp/products/5SU1356-6KK20","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON RCBO, 2-pole, 20 A rated, 30 mA Type A residual current, B tripping characteristic, 6 kA breaking capacity, 2 modular width units.","salesMarkdown":"## Temperature derating matters for panel fill At 40 °C it derates to 18.8 A, at 50 °C to 17.4 A, and at 70 °C to 14.6 A. Mounting position is any, so vertical or horizontal DIN-rail orientation won't change the thermal performance. Touch protection is built in. The supply cord can enter from top or bottom, giving flexibility in panel layout. IP20 rating applies when installed in a distribution board with connected conductors — it's not a standalone outdoor device.","metaTitle":"Siemens 5SU1356-6KK20 SENTRON RCBO, 20A, 30mA, B Curve, 2-Po","metaDescription":"Siemens SENTRON 5SU1356-6KK20 RCBO, 20A rated, 30mA Type A residual current, B curve, 6kA breaking capacity, 2-pole, 2 MW. Current production. Sourced to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Residual Current Breakers (RCCB/RCBO)"],"specifications":{"Depth":"77 mm","Width":"36 mm","Height":"90 mm","Maximum":"75 °C","Minimum":"-40 °C","Halogen-Free":"Yes","Silicon-Free":"Yes","Number Of Poles":"2","lifecycle_stage":"current","Mounting Position":"any","Installation Depth":"70 mm","Product Brand Name":"SENTRON","Degree Of Pollution":"2","Operating Frequency":"50 Hz","Product Designation":"RCBO","at AC / rated value":"20 A","protection class IP":"IP20, if the distribution board is installed, with connected conductors","Overvoltage Category":"III","Design Of The Product":"Instantaneous","Residual Current Type":"A","Energy Limitation Class":"3","Weight / With Packaging":"278 g","according to EN 61346-2":"F","at 30 °C / rated value":"20 A","at 40 °C / rated value":"18.8 A","at 45 °C / rated value":"18.2 A","at 50 °C / rated value":"17.4 A","at 55 °C / rated value":"16.2 A","at 60 °C / rated value":"16.2 A","at 65 °C / rated value":"15.4 A","at 70 °C / rated value":"14.6 A","according to IEC 81346-2":"F","Number Of Modular Width Units":"2","Tripping Characteristic Class":"B","For Testing Equipment / Minimum":"195 V","Position / Of Power Supply Cord":"Either top or bottom","Number Of Poles / With Protection":"1","Product Feature / Touch Protection":"Yes","according to EN 60898 / rated value":"6 kA","Tripping Fault Current / Rated Value":"30 mA","insulation voltage (Ui) / rated value":"264 V","Supply Voltage Frequency / Rated Value":"50 Hz","Surge Voltage Resistance / Rated Value":"4 000 V","according to IEC 60947-2 / rated value":"15 kA","Influence Of The Surrounding Temperature":"Max. 95% humidity","Surge Current Resistance / At (8/20) μS":"1 kA","Type Of Voltage / Of The Operating Voltage":"AC","Product Component / Neutral Conductor Switching":"Yes","Mechanical Service Life (Switching Cycles) / Typical":"10 000"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$65.92","priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/c74890c1e189b0d254ab10007bc881fa.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=335185&mlfb=5SU1356-6KK20","alternativesUrl":"https://aoctrl.com/api/mcp/products/5SU1356-6KK20/alternatives.json"},"ai":{"faq":[{"question":"What are the key ratings for the 5SU1356-6KK20?","answer":"Rated 20 A at 30 °C, 30 mA Type A residual current, B tripping curve, 6 kA breaking capacity per EN 60898, 2-pole, 2 modular width units (36 mm)."},{"question":"Where can I buy the 5SU1356-6KK20?","answer":"Sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — no stock count or price is listed here."},{"question":"What is the depth of the 5SU1356-6KK20?","answer":"The depth is 77 mm, with an installation depth of 70 mm. Width is 36 mm (2 MW), height is 90 mm."},{"question":"Will the 5SU1356-6KK20 drop into a panel specified around the 5SY5202-6?","answer":"The 5SU1356-6KK20 is an RCBO (overcurrent + residual current combined), while the 5SY5202-6 is a miniature circuit breaker only (no residual protection). They share the same 2-MW DIN-rail footprint, but the 5SU1356-6KK20 adds the 30 mA Type A residual current trip — wiring and circuit design must account for that difference. Physical fit is the same; functional substitution depends on whether residual current protection is required."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SU1356-6KK20","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/5SU1356-6KK20 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}}