{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SM6021-2","brand":"Siemens","brandSlug":"siemens","productSlug":"5SM6021-2","canonicalUrl":"https://aoctrl.com/siemens/5SM6021-2","factsUrl":"https://aoctrl.com/api/mcp/products/5SM6021-2","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SM6021-2 arc-fault detection device unit block (AFDD), 1-16 A 230 V AC, 50 Hz, 1P+N, 2-pole, 1 MW, DIN rail mount, IP20.","salesMarkdown":"The Siemens 5SM6021-2 is a SENTRON arc-fault detection device (AFDD) unit block designed to mount onto a compatible miniature circuit breaker (MCB) or residual current circuit breaker (RCBO) to add series arc-fault protection in a 1P+N, 2-pole configuration. Rated for 1-16 A at 230 V AC, 50 Hz, this AFDD occupies 1 modular width unit (18 mm) on a DIN rail, while the paired protective device (MCB or RCBO) requires 2 modular width units, for a combined 3-unit footprint. The unit block is designed for use with Siemens 5SY and 5SL4 MCBs, and 5SU1 RCBOs, making it a drop-in addition for new or existing SENTRON distribution boards where arc-fault protection is required by code or specification. The 230 V AC, 50 Hz rating matches standard single-phase mains supply in European and many Asian markets. The 1P+N pole design means it switches the line conductor only; the neutral is switched by the paired RCBO or MCB. Mechanical service life of 10,000 operating cycles is typical for a protective device in this class — adequate for normal panel operation where the AFDD is not cycled frequently. The unit is designed for continuous duty, not as a switching device. IP20 protection with connected conductors means the AFDD is suitable for installation inside a distribution board or enclosure that provides additional environmental protection. It is not rated for wet or outdoor locations without a higher-rated enclosure. The -40 °C minimum is relevant for unheated utility rooms or seasonal cold storage. Snap-on DIN rail (REG) mounting with any orientation. The 68.5 mm depth, 54 mm width, and 95 mm height match the standard SENTRON modular device footprint, so it aligns with adjacent breakers and accessories on the same rail. The supply connection is at the bottom of the unit, consistent with standard panel wiring practice for incoming feeders. No official successor has been announced for this active part. For BOM planning, the 5SM6021-2 remains the current SENTRON AFDD unit block for 1P+N applications with 5SY/5SL4/5SU1 devices.","metaTitle":"Siemens 5SM6021-2 SENTRON AFDD, 1-16 A 230 V, 1 MW","metaDescription":"Siemens 5SM6021-2 SENTRON arc-fault detection device unit block (AFDD). Rated 1-16 A at 230 V AC, 50 Hz. 1P+N, 2-pole design. DIN rail mount, IP20. Active production, available to","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Residual Current Breakers (RCCB/RCBO)"],"specifications":{"Depth":"68.5 mm","Width":"54 mm","title":"5SM6021-2","Height":"95 mm","Maximum":"75 °C","Minimum":"-40 °C","description":"Arc fault detection device block AFDD, 1-16 A 230 V for CB and RCBO 1+N 2MW","Halogen-Free":"Yes","Silicon-Free":"Yes","Design Of Pole":"1P+N","Number Of Poles":"2","lifecycle_stage":"current","Fastening Method":"DIN rail (REG)","Mounting Position":"any","at AC rated value":"230 V","Installation Depth":"70 mm","Product Brand Name":"SENTRON","Degree Of Pollution":"2","Product Designation":"Arc-fault detection unit block","protection class IP":"IP20, with connected protective device and conductors","Overvoltage Category":"III","Design Of The Product":"for MCB 5SY, 5SL4 and RCBO 5SU1","Number Of Modular Width Units":"1","Position Of Power Supply Cord":"Bottom","Switching Function Short-Term Delayed":"No","Type Of Voltage Of The Operating Voltage":"AC","Value Range Of The Supply Voltage Frequency":"50Hz","Ambient Temperature With Relative Humidity 95%":"55 °C","Mechanical Service Life (Operating Cycles) Typical":"10 000","Product Extension Installable Supplementary Devices":"Yes","Number Of Modular Width Units Of The Mountable Protective Device":"2"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/96e977fceee1ce0979db37f425beb31d.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=767998&mlfb=5SM6021-2"},"ai":{"faq":[{"question":"What MCBs and RCBOs is the 5SM6021-2 compatible with?","answer":"The 5SM6021-2 is designed for use with Siemens 5SY and 5SL4 miniature circuit breakers, and 5SU1 residual current circuit breakers (RCBOs), in a 1P+N configuration. It mounts alongside these devices on a DIN rail."},{"question":"What is the difference between the 5SM6021-2 and a standard MCB like the 5SL4363-7?","answer":"The 5SM6021-2 is an arc-fault detection device (AFDD) unit block that adds series arc-fault protection; it is not a circuit breaker itself. The 5SL4363-7 is a 3-pole miniature circuit breaker (MCB) with overcurrent protection only. The 5SM6021-2 mounts onto a compatible 1P+N MCB or RCBO to combine overcurrent and arc-fault protection in one assembly."},{"question":"Where can I buy the 5SM6021-2?","answer":"The 5SM6021-2 is sourced and quoted to order against an RFQ through independent industrial automation distribution. Availability and current pricing are confirmed at the time of quote."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SM6021-2","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/5SM6021-2 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-08-11T15:51:03.652Z","lastPublished":"2026-08-11T15:51:03.652Z","indexable":true}}