{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SU1356-1DV25","brand":"Siemens","brandSlug":"siemens","productSlug":"5SU1356-1DV25","canonicalUrl":"https://aoctrl.com/siemens/5SU1356-1DV25","factsUrl":"https://aoctrl.com/api/mcp/products/5SU1356-1DV25","rawCanonicalId":null},"summary":{"shortDescription":"Siemens 5SU1356-1DV25, FI/LS-PROTECTOR TYPE AC (WS), D=70MM IFN 30MA, 6KA, 1+N-POLEE C 25A PIG-TAIL.","salesMarkdown":"## RCD/MCB Combination Unit — Type AC, 30 mA, 6 kA The Siemens 5SU1356-1DV25 is an FI/LS protector — a combined residual-current device (RCD) and miniature circuit breaker (MCB) in one 1+N-pole unit. It provides both earth-fault and overcurrent protection for a single-phase final subcircuit, sized at 25 A with a C-trip curve and a 30 mA residual-current sensitivity. The Type AC designation means it detects sinusoidal alternating residual currents only — suitable for circuits with resistive, capacitive, or inductive loads that do not generate pulsed or smooth DC fault currents. The 30 mA rated residual operating current (IΔn) provides additional fire protection and basic personal shock protection in standard installations. The C-curve (25 A rated current) is the magnetic trip characteristic: it allows inrush currents 5–10 times the nominal rating, so it handles motorized loads like pumps or compressors without nuisance tripping. ## Panel Integration The 70 mm depth (D=70MM) is the installed dimension from the DIN-rail mounting surface to the front of the device — check enclosure depth clearance before committing the BOM. The pigtail (PIG-TAIL) connection on the neutral side is factory-fitted; it simplifies wiring in a standard distribution board but means the neutral conductor is permanently connected, not looped through a separate terminal.","metaTitle":"Siemens 5SU1356-1DV25 FI/LS Protector, Type AC, 30mA, 6kA, 2","metaDescription":"Siemens 5SU1356-1DV25 FI/LS protector, Type AC, 30mA sensitivity, 6kA breaking capacity, 25A C-curve, 1+N-pole. Current lifecycle. Quoted on request.","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=129418&mlfb=5SU1356-1DV25","alternativesUrl":"https://aoctrl.com/api/mcp/products/5SU1356-1DV25/alternatives.json"},"ai":{"faq":[{"question":"What is the breaking capacity and sensitivity of this FI/LS protector?","answer":"It has a 6 kA breaking capacity and a 30 mA residual-current sensitivity (Type AC)."},{"question":"Where can I buy the 5SU1356-1DV25?","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/5SU1356-1DV25","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/5SU1356-1DV25 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}}