{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SU1356-0DV20","brand":"Siemens","brandSlug":"siemens","productSlug":"5SU1356-0DV20","canonicalUrl":"https://aoctrl.com/siemens/5SU1356-0DV20","factsUrl":"https://aoctrl.com/api/mcp/products/5SU1356-0DV20","rawCanonicalId":null},"summary":{"shortDescription":"Siemens 5SU1356-0DV20 FI/LS protector, Type AC (WS), D=70mm, IΔn 30mA, 6kA, 1+N-pole, B-curve 20A, pigtail connection.","salesMarkdown":"The Siemens 5SU1356-0DV20 is an FI/LS combination unit — a residual-current device (RCD) and miniature circuit breaker (MCB) in one 1+N-pole module. It carries a B-curve 20 A overcurrent trip for general-purpose branch-circuit protection, combined with a 30 mA Type AC residual-current trip for personnel protection against sinusoidal AC fault currents. The 30 mA trip threshold is the standard for socket-outlet circuits in residential and commercial installations per IEC 60364 — it catches body currents before ventricular fibrillation becomes likely. The B-curve 20 A overcurrent characteristic trips between 3× and 5× In (60–100 A), so it handles inrush from resistive and lightly inductive loads like lighting banks, small motors, or heating elements without nuisance tripping. The 70 mm depth (D=70mm) and 1+N-pole form factor fit standard DIN-rail enclosures. The pigtail connection means the neutral tail is factory-attached — no separate neutral bar connection needed on the load side, which simplifies wiring in a distribution board. Verify the busbar pitch matches the module width before panel assembly.","metaTitle":"Siemens 5SU1356-0DV20 FI/LS Protector, 20A B-curve, 30mA, 6k","metaDescription":"Siemens 5SU1356-0DV20 FI/LS protector, Type AC, 30mA, 6kA, B-curve 20A, 1+N-pole, pigtail. Current lifecycle stage. Sourced to order against RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Residual Current Breakers (RCCB/RCBO)"],"specifications":{"lifecycle_stage":"current"}},"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=117271&mlfb=5SU1356-0DV20","alternativesUrl":"https://aoctrl.com/api/mcp/products/5SU1356-0DV20/alternatives.json"},"ai":{"faq":[{"question":"What does the description 'FI/LS-PROTECTOR TYPE AC (WS), D=70MM IFN 30MA, 6KA, 1+N-POLEE B 20A PIG-TAIL' mean?","answer":"It is a combined RCD/MCB (FI/LS protector) with Type AC residual-current sensing, 30 mA trip threshold, 6 kA breaking capacity, 1+N-pole configuration, B-curve 20 A overcurrent protection, and a factory-attached pigtail neutral connection."},{"question":"Where can I buy the 5SU1356-0DV20?","answer":"This part is sourced and quoted to order against an RFQ through independent distribution channels. Availability and current pricing are confirmed at quote time."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SU1356-0DV20","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/5SU1356-0DV20 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}}